Daniel Murillo
Index

Programming · October 27, 2026 · Daniel Murillo

AI for software development: there is no best tool, there is a best fit

Choose by task and workflow. Assistants, design, coding agents, and images do not compete for the same ranking.

The useful question is not “what is the best AI for programming?” but “which part of my work do I want to improve, and which tool is designed to do that well?”

Introduction: stop looking for an absolute winner

Every week a new tool appears that promises to change how we program. Some generate interfaces from a description; others work inside the editor, read a repository, modify several files, and run commands. There are also tools meant for creating images, exploring visual styles, generating diagrams, writing tests, or reviewing code.

Comparing them as if they all did the same thing leads to unhelpful conclusions.

A tool that speeds up visual exploration is not necessarily the best for maintaining an enterprise application. An agent that can edit dozens of files may be excessive for a small function. And an excellent image generator for artistic illustrations may not work for creating a vector logo or an image with readable text.

There is no universally better AI. There is a combination of tools that fits the problem, the team, the budget, and the workflow better.

The goal is not to accumulate subscriptions or delegate everything. It is to identify which task we want to solve, select the right tool, give it useful context, and verify the result.

1. First, separate the categories

Before comparing brands, it helps to identify the type of work. Categories overlap and products evolve, but this classification helps you choose.

NeedCategoryExamples to evaluate
Land an idea, analyze options, draft requirements, or design a solutionReasoning and planning assistantChatGPT, Claude, Gemini
Explore screens, flows, and visual systemsAI-assisted interface designGoogle Stitch, Figma AI, v0
Build an application from a description, with little initial setupApplication generatorsLovable, Bolt, v0
Work on a real repository, edit files, and run commandsIDE or coding agentCursor, GitHub Copilot, Claude Code, OpenAI Codex
Create images, illustrations, concepts, or graphic assetsImage generation and editingChatGPT Images, Midjourney, Adobe Firefly, Ideogram, Recraft, FLUX
Find bugs, generate tests, and review changesAI-assisted quality and reviewCoding agents, review tools, and CI assistants
Create documentation, diagrams, or explanations for the teamGeneral assistants and specialized toolsChatGPT, Claude, Mermaid, and diagramming tools

Important: a tool can belong to several categories. The table is not a rigid classification or an absolute recommendation; it is a map to start evaluating options.

2. An example workflow

This flow comes from a common experience: use an assistant to organize ideas, a visual tool to explore the interface, and a coding agent to implement. It is not the only correct way to work, but an example of how to divide responsibilities.

Idea or problem
        |
        v
Assistant: clarify goals and constraints
        |
        v
Brief specification and acceptance criteria
        |
        v
Visual tool: explore screens and flows
        |
        v
Review design, states, and experience
        |
        v
Coding agent: plan and implement
        |
        v
Tests, diff review, and execution
        |
        v
Meets the criteria? --No--> return to the agent
        |
       Yes
        |
        v
Human review and delivery

Context transfer matters as much as the tool. If the design AI only receives “make a modern dashboard,” it will probably generate a generic screen. If the coding agent receives a screenshot without business rules, architecture, or acceptance criteria, it may produce an attractive interface that is hard to integrate.

A good practice is to create a small artifact that travels between stages: a brief, a specification, a design rules file, a set of acceptance criteria, or a well-described issue.

3. Assistants for thinking, researching, and preparing the work

What are they for?

They are useful before writing code: clarifying the problem, comparing approaches, exploring risks, turning an idea into requirements, preparing prompts, reviewing an architecture decision, or explaining an unfamiliar technical base.

Options worth trying:

  • ChatGPT: conversational reasoning, exploring alternatives, document analysis, planning, and technical support. It can also help turn vague ideas into requirements and acceptance criteria.
  • Claude: an alternative for analyzing long documents, discussing system design, and working with broad context.
  • Gemini: an option to consider when the workflow already uses Google tools and services.

Do not choose only by the most convincing answer. Compare accuracy, the ability to recognize uncertainty, explanation quality, context handling, integrations, cost, and privacy policies.

A use that usually yields better results

Instead of asking:

“Give me the architecture of an events application.”

Define the context:

  • What problem the product solves.
  • Who will use it.
  • What the first version must do and what is out of scope.
  • Which technologies are already chosen and why.
  • What the security, cost, performance, and operations constraints are.
  • Which decisions remain open.
  • What evidence or documentation should be consulted.

Then ask for alternatives with advantages, disadvantages, risks, assumptions, and decision criteria. The AI should help you think more clearly, not turn its first answer into an automatic decision.

Good tasks for this category: explore, structure, question, summarize, and prepare.

Do not delegate without review: irreversible decisions, security commitments, regulatory requirements, cost estimates, or architecture that will affect years of maintenance.

4. Interface design: from idea to an experience you can evaluate

Google Stitch

Stitch is oriented toward exploring and building interface designs from natural language and visual references. It can be useful for testing visual directions, generating screens, iterating on proposals, and communicating design intent before implementing.

It is especially valuable when the team is still exploring how a product should feel and work. It does not automatically replace defining navigation, accessibility, error states, responsive design, a component system, or business rules.

Figma AI

It may fit better when design work already lives in Figma, the team needs to collaborate on design files, and results must integrate with handoff and visual system maintenance. Availability and concrete features depend on the product and current plan; verify current capabilities before deciding.

v0

It is interesting when you want to go from a description, screenshot, or visual reference to components and web applications, especially in a flow close to React, Next.js, and their ecosystem. It can reduce the time between idea and a working prototype, but its technology affinity matters: not all codebases or frameworks benefit equally.

Lovable and Bolt

These are alternatives for exploring the creation of functional applications from prompts, with editing and iteration inside their own platforms. They can accelerate prototypes and small products. Before adopting them for a system that will grow, review the generated structure, dependencies, code quality, export options, Git integration, backend model, costs, and how easy it is to leave the platform.

Which to choose?

  • If you need to explore visual directions and screens, try a design-centered tool such as Stitch.
  • If the team already designs and collaborates in Figma, start by evaluating the features available in that environment.
  • If you want to generate components and a web experience close to code, evaluate v0.
  • If you want to validate an application idea quickly, compare Lovable and Bolt, without assuming the generated prototype is production-ready.

Do not compare only the beauty of the first screen. Also evaluate empty, error, and loading states, accessibility, responsive behavior, navigation, consistency across screens, and how easy it is to take the design into real code.

5. Programming: assistants, editors, and agents are not exactly the same

The programming category has changed: some tools suggest lines; others answer questions about the code; others plan a task, edit several files, run commands, and check results. Boundaries are blurring, so compare current capabilities and not only commercial labels.

Cursor

A programming environment with integrated AI and agents that can explore the repository, modify several files, run commands, and help implement features, refactors, and fixes. It fits when you want to work interactively inside an editor designed around AI assistance.

Try Cursor if: you want to stay in an editor flow, inspect changes, and guide the agent while it works on existing code.

Evaluate carefully: plan usage and limits, change quality on your stack, control over context, code privacy, ease of reviewing diffs, and behavior in large repositories.

GitHub Copilot

It makes sense for teams whose workflow already revolves around GitHub and compatible editors. It can provide autocomplete, chat, and agent features, depending on the editor, plan, and capabilities available at the time.

Try Copilot if: you want to add assistance to the existing development environment and process without necessarily changing editors.

Evaluate: integration with the repository and pull requests, compatibility with your tools, organizational policies, usage limits, and quality on real tasks.

Claude Code

An agent oriented toward working with code and development tools from the terminal and compatible environments. It can be useful for tasks that span multiple files, research inside the repository, refactors, or automations driven by instructions.

Try Claude Code if: you prefer a terminal-centered flow, broad tasks, and explicit control over the agent’s actions.

Evaluate: permissions, commands it can run, context it needs, cost, traceability, and how much you must supervise to keep the change safe.

OpenAI Codex

A coding agent available through OpenAI experiences that may include applications, terminal, editor, and cloud environments, depending on availability and plan. It is designed to run engineering tasks such as developing features, fixing bugs, refactoring, and working with tests.

Try Codex if: you want to delegate bounded tasks and review the result, or if you already use OpenAI tools and it makes sense to evaluate their integration.

Evaluate: repository access, environment isolation, required approvals, usage limits, test quality, and ease of reviewing changes.

What about assistants that come inside other editors?

Do not discard them. If an extension handles autocomplete, code explanation, or frequent tasks well, you may not need to migrate to another editor. The cost of changing environments, reconfiguring tools, and adapting the team also counts.

A quick decision matrix

If your priority is…Start by evaluating…Check especially…
Working with AI integrated in an editorCursorChange control, context, and daily experience
Keeping the existing GitHub flowGitHub CopilotIntegration with repositories, PRs, and team policies
Delegating tasks from the terminalClaude CodePermissions, commands, traceability, and context
Delegating engineering tasks in the OpenAI ecosystemCodexIntegration, isolation, tests, and limits
You only need autocomplete and quick questionsCurrent editor assistantFriction, accuracy, and total cost

This matrix is not a quality ranking. It is a list of candidates for a comparative test with your own tasks.

6. Images and visual assets: choose according to the result you need

This is a category that is often mixed too much. Creating an editorial image, a background texture, an illustration for a blog post, a vector icon, and a logo are different jobs.

ChatGPT Images

It can serve as a general starting point for creating images and editing them conversationally: you describe what you want, review the result, and ask for concrete changes. It is convenient when you want to iterate with natural-language instructions without separating the conversation from the creative process as much.

Use it to explore: illustrations for articles, visual concepts, composition variations, and conversation-guided edits.

Midjourney

It is an option to evaluate for aesthetic exploration, stylized images, artistic concepts, and visual direction. If the priority is getting an image with a strong visual identity, compare several proposals with the same brief before deciding.

Use it to explore: atmospheres, concepts, editorial illustration, and visual references.

Adobe Firefly

It may fit when the flow already uses Adobe tools and you need to combine generation with editing inside a broader design process. Adobe publishes specific conditions on commercial use of its results; review the conditions applicable to the concrete feature, especially if it is in beta.

Use it to explore: generation and editing inside design flows, retouching, and asset production.

Ideogram

It is worth trying when the image needs to integrate text, such as posters, graphic titles, or typographic compositions. Even so, verify spelling, readability, and composition manually: do not trust a brand message to an image without review.

Recraft

Interesting for graphic design and brand assets, especially when it matters to get vector-style results or work with visual assets closer to product design. Check the exported format and the real ability to edit it in your final tool.

FLUX and models with more control

For those who need to experiment with generation via API, different interfaces, editing flows, or deployments with greater control, the FLUX family and other models available through providers can be a path to investigate. Experience and permissions depend on the implementation and the chosen provider.

What to choose for a technical blog?

NeedCandidates to tryWhat to review
Main image for a postChatGPT Images, Midjourney, FireflyComposition, coherence with the topic, and format
Image with integrated textIdeogram and traditional design toolsSpelling, hierarchy, and readability
Icons, brand assets, or vectorsRecraft and vector toolsExport, editing, and consistency
Conversational variations and retouchesChatGPT Images, FireflyFidelity to the reference and change control
Programmatic or more configurable generationFLUX and providers with APIAPI, cost, license, latency, and privacy
Final logoAI to explore concepts + vector editor + brand reviewDifferentiation, scalability, readability, and rights

Practical recommendation: if you do not yet have a specific image tool, start with a small experiment using two different tools on the same brief. Compare the real result, not the advertising. For the blog, you can try one for the editorial image and another when you need typography or graphic assets. You do not need to pay for five services to discover that.

A generated image is also not automatically a production-ready asset. Review dimensions, proportion, artifacts, contrast, rights, and commercial conditions. For logos, interface icons, or illustrations that must scale, consider whether you need an editable vector file instead of a PNG.

7. Prompting: it is not magic, it is specifying the work well

Result quality depends on the tool, but also on context, constraints, and how the output is evaluated. A long prompt is not necessarily good; a specific and verifiable one is usually more useful than a list of adjectives.

Template for requesting an interface

Product context:
[What the product is and what problem it solves]

Primary user:
[Who will use the screen and what they need to do]

Goal of this screen:
[The main action it should facilitate]

Content and components:
[Sections, fields, tables, buttons, and navigation]

States that must exist:
[Loading, empty, error, success, insufficient permissions]

Constraints:
[Framework, design system, accessibility, responsive,
existing components, and things that must not be invented]

Visual direction:
[References, personality, density, and hierarchy]

Acceptance criteria:
[What the user must be able to do and how we will know it works]

Before finishing:
[List assumptions and points that need validation]

Template for requesting an implementation from a coding agent

Goal:
[Concrete result needed]

Context:
[What the module does and how it fits in the system]

Scope:
[Files, modules, or behaviors that should be modified]

Out of scope:
[What must not change]

Technical constraints:
[Stack, conventions, APIs, patterns, and compatibility]

Acceptance criteria:
[Observable behaviors and edge cases]

Verification:
[Tests, lint, build, and available commands]

Working method:
1. Inspect the relevant code before editing.
2. Summarize the plan and risks.
3. Implement the smallest change that solves the problem.
4. Run the available verifications.
5. Summarize changed files, results, and remaining work.
6. Do not claim a test passed if you did not run it.

Template for creating an image

Final use:
[Blog cover, illustration, background, brand asset...]

Central idea:
[What the image must communicate]

Composition:
[Subject, framing, focal point, negative space]

Visual direction:
[Editorial, minimalist, 3D, photography, collage, etc.]

Palette:
[Main colors and colors to avoid]

Format:
[Aspect ratio, orientation, and safe crop zone]

Constraints:
[No text / exact text / no logos / no watermarks]

Success criteria:
[What must be clearly visible and which errors to avoid]

Templates do not guarantee results. They are a way to communicate context and reduce ambiguity. Adjust the amount of detail to the tool: some work better with brief iterative instructions; others need a more complete brief.

8. How to test tools without getting carried away by a demo

Instead of comparing promotional screenshots, design a small evaluation based on real work.

  1. Select a representative task. For example, adding a feature to an existing module, generating a screen with states, or creating a cover for an article.
  2. Define the expected result before testing. Write criteria that let you judge the output without depending on the first impression.
  3. Use the same context and constraints. Do not give one tool a complete specification and another a vague sentence.
  4. Record total time. Include preparation, iterations, correction, integration, and review—not only time until the first output.
  5. Measure correction work. Count errors, discarded changes, failed tests, and integration problems.
  6. Check quality and control. Can you edit the result? Do you understand what changed? Can you export it? Is it easy to leave the platform?
  7. Calculate real cost. Include subscription, credits, usage, human time, and dependency on a tool.
  8. Repeat with more than one task. A single demo does not represent all use cases.

A simple score can help you compare candidates, as long as the weights reflect your context:

CriterionQuestion
QualityDoes the result meet the requirements?
CorrectionHow much additional work does it demand?
IntegrationDoes it fit the current stack and process?
ControlCan I inspect, modify, and revert the result?
ContextDoes it understand the project or do I have to repeat information?
Security and privacyWhat data does it process and what permissions does it require?
Total costHow much does it cost to produce an acceptable result?
LearningCan the team use it consistently?

It is not necessary for a single tool to win on every criterion. It may be better to use one to explore, another to implement, and another to review.

9. Risks and limits that should not be ignored

Plausible code does not mean correct code

Code can compile and still fail on edge cases, authorization, concurrency, migrations, performance, or security. Generated tests can also repeat the incorrect assumptions of the implementation.

Agents need boundaries

Define permissions, review the commands they can run, and avoid giving indiscriminate access to secrets, production, or personal data. Work with version control, small changes, and isolated environments when possible.

Private context requires care

Before pasting proprietary code, credentials, customer data, or sensitive documentation, review the provider’s data handling conditions, retention, training, and enterprise controls. Do not include secrets in prompts or instruction files.

Visual generation does not solve every design problem

An interface can look good and still be inaccessible, inconsistent, hard to maintain, or unclear for its users. A visual asset can contain errors, look too much like an existing brand, or have usage conditions incompatible with the project.

Vendor lock-in is also a decision

Evaluate export of code and assets, standard formats, API availability, ease of switching tools, and what happens to your work if you cancel a subscription.

Human judgment remains part of the process

The responsibility to validate requirements, security, quality, accessibility, licenses, and architecture decisions does not disappear because a tool can execute more steps.

10. A reasonable starter stack, without turning it into a universal recipe

If you are building a product from scratch, you can try a combination like this:

  1. General assistant: to clarify the problem, compare options, write requirements, and prepare the brief.
  2. Design tool: to explore screens, flows, and visual direction.
  3. Coding agent: to implement in the real repository, run tests, and propose changes.
  4. Specialized visual tool: when you need illustrations, cover images, graphic typography, or vector assets.
  5. Usual engineering tools: Git, automated tests, lint, code review, CI/CD, and observability.

You do not need to hire five products from day one. Start with the tools you already have, identify the bottleneck, and add another only if it observably improves the process.

For a developer who already uses a conversational assistant, Google Stitch, and Cursor, the next logical experiment may be to try an image generator on two or three concrete blog needs: an editorial cover, a conceptual image, and a piece with text. Then compare quality, ease of editing, and usage conditions. The answer may differ for each type of asset.

Conclusion

The question is not which AI appears first in a rankings table. The question is where time is lost in your process and which tool can reduce that friction without introducing more risk or correction work than it removes.

Use assistants to think and structure; design tools to explore experiences; agents to work on code with context and checks; visual generators for the type of asset you need; and tests, review, and human judgment to decide whether the result is ready.

The best tool is the one that solves your task well, integrates with how you work, and lets you keep control of the result.

Related reading

References

Interface design and construction

AI-assisted programming

Images and graphic design

Features, plans, limits, and terms of use change quickly. This article is a use-case selection guide, not a ranking. Before choosing, test the tools with your own tasks and consult their current terms.