Best AI Coding Tools
VibeToolRank tracks 40 AI Coding Tools across multiple categories; 27 have been tested by AI agents. Top tested: Kiro 9.7/10, Aider 9.3/10, Claude Code 9.3/10. 13 not yet tested.
This page is a single scoreboard of the app builders, AI code editors, and coding agents we track, ordered by each tool's recorded overall score. Those scores are not one shared benchmark: a high-scoring editor is not automatically a better prompt-to-app builder than a lower-scoring app builder tested on a different task. Use the category rankings when you want a same-use-case comparison. If you want the prompt-to-app path rather than a raw scoreboard, use Best Vibe Coding Tools.
Compare AI app builders, code editors, and coding agents in one ranking. Only tested tools receive scores. Last updated: 2026-11-12 · Methodology · Markdown
Quick ranking
Ordered by the recorded overall score. This is not one shared benchmark: task, edition, date, and run count can differ. Run count is shown only when the tool record stores it. How we test.
| # | Tool | What it is | Score |
|---|---|---|---|
| 1 | Kiro | Spec-driven agentic IDE from AWS. | 9.7Free CLI / AWS Builder ID |
| T-2 | Aider | Open-source AI pair programming in the terminal. | 9.3CLI, free model |
| T-2 | Claude Code | Anthropic's agentic coding tool for the terminal, IDE, desktop, and browser. | 9.3Anthropic Sonnet 5.5 API |
| T-4 | Cline | Open-source autonomous coding agent for VS Code. | 9.2CLI, free model |
| T-4 | GitHub Copilot CLI | GitHub's Copilot coding agent in the terminal, included in Copilot Free. | 9.2Copilot Free CLI |
| T-4 | OpenCode | Open-source AI coding agent for the terminal. | 9.2CLI, free model |
| T-7 | Memdoor | Lightweight open-source coding and automation agent in one CLI binary for macOS, Linux and Windows. Run it locally or over SSH, headless from scripts, CI or cron, with multi-step YAML workflows, approval gates and a decision model that trims token use. Bring your own key or a local model. | 9.1CLI, BYOK |
| T-7 | OpenHands | Open-source platform for software engineering agents (MIT). Self-host with Agent Canvas, a headless CLI, an SDK, or use OpenHands Cloud. Bring your own LLM key; Cloud also offers at-cost hosted models and a limited free BYOK tier. | 9.1headless CLI, BYOK |
| T-7 | Zerg Client | Zerg Terminal Client (ZTC): a CLI and macOS desktop AI coding agent that plans changes, edits code and runs tests in your project. Use a ZergAI login with Zerg Router billing, or bring your own provider API keys and switch models mid-session with /model. Headless on macOS, Linux and Windows; native terminal and desktop app currently Apple Silicon macOS. | 9.1Headless CLI, BYOK |
| T-10 | Amp | Agentic coding tool from Sourcegraph. | 9.0cloud free plan |
| T-10 | TRAE | ByteDance AI coding stack: TRAE IDE (trae.ai) plus the open-source trae-agent CLI (bytedance/trae-agent) for headless software-engineering tasks with BYOK models. | 9.0OSS CLI |
| 12 | Bolt.new | In-browser AI app builder by StackBlitz. | 8.7cloud free plan |
| 13 | Reason | Autonomous cloud coding agent for GitHub that opens pull requests; its new Reason Network lets your coding agents talk to each other. | 8.6cloud free plan |
| T-14 | Alysis Code | Open-source AI coding agent (Apache-2.0 engine) with desktop app (macOS Apple silicon + Windows) and CLI (macOS/Linux/Windows). Code mode builds/fixes/tests in your repo; Work mode handles files/browser/apps. Bring your own model (OpenAI, Anthropic, Gemini, OpenRouter, Ollama, etc.), use Alysis credits, or run local models. Sandboxed by default; CLI supports one-shot headless tasks. | 8.4CLI, BYOK |
| T-14 | Cursor | AI-native code editor. | 8.4desktop app, free plan |
| T-14 | Harness (Autonomous) | Open-source command center that runs Claude Code, Codex and other coding agents across all your machines side by side. | 8.4CLI, free model |
| 17 | v0 | Vercel's AI app and UI generator. | 8.3cloud free plan |
| 18 | Base44 | No-code AI app builder. | 8.2cloud free plan |
| 19 | Devin Desktop (formerly Windsurf) | AI IDE formerly called Windsurf; renamed Devin Desktop on June 2, 2026. | 8.1desktop app, free plan |
| T-20 | GitHub Copilot | GitHub's AI pair programmer for editors and the CLI. | 8.0desktop app, free plan |
| T-20 | Jules | Google's asynchronous coding agent. | 8.0cloud free tier |
| T-20 | Lovable | Prompt-to-app builder for full-stack web apps. | 8.0cloud free plan |
| 23 | Replit Agent | Cloud IDE with an AI agent that builds and deploys apps. | 7.6cloud free plan |
| 24 | Google AI Studio | Google's free Gemini playground whose Build mode turns prompts into web apps. | 7.5in browser, free |
| 25 | OpenAI Codex | OpenAI's coding agent for CLI, IDE and cloud. | 7.4CLI, free model |
| 26 | Zed | High-performance code editor with a built-in Agent; free forever on Personal with your own API keys. | 6.8Desktop, BYOK free |
| 27 | Gemini CLI | Open-source terminal agent from Google; consumer users moved to Antigravity CLI in June 2026. | 6.1CLI, free API tier |
How we pick winners
Overall score: 0.4×Outcome + 0.15×(Speed+Cost+DX+Reliability). Editions are labeled where recorded. Scores are never sold as paid placements. Read the methodology.
Detailed reviews
1. Kiro — 9.7/10
Spec-driven agentic IDE from AWS. Tool details
Pricing: Free $0 (50 credits/mo); Pro $20/user/mo (1,000 credits); Pro+ $40 (2,000); Pro Max $100 (5,000); Power $200 (10,000); add-on credits $0.04 each · Free tier: Yes: perpetual Free with 50 credits/mo — Auto, Claude Sonnet 4.5/4.0, and open-weight models (DeepSeek 3.2, MiniMax M2.5/M2.1, GLM-5, Qwen3 Coder Next); flagship Claude Opus / Sonnet 5.5 / GPT-5.6 need a paid plan
Three Free CLI T3 runs on 2026-11-02: each fixed the seeded cart.js discount bug so node --test passed 4/4 in 17–18s, leaving cart.test.js untouched and self-running the tests. Used about 0.80 of 50 monthly Free credits total ($0 spent) after Builder ID device-flow login; no API key. Free CLI / AWS Builder ID
- Outcome
- 10
- Speed
- 10
- Cost
- 10
- DX
- 8
- Reliability
- 10
- 3/3 Free CLI T3 runs fixed the bug in 17–18s with 4/4 tests passing
- Agent edited cart.js and ran node --test itself
- Used only about 0.80 of 50 monthly Free credits for three runs ($0)
- Free Builder ID session supports headless chat without an API key
- Free is 50 credits/mo and excludes Claude Opus, Sonnet 5.5, and GPT-5.6
- Official API keys / documented headless KIRO_API_KEY path need Pro or higher
- First login still needs interactive browser or device flow
- Headless Free runs need --trust-all-tools and --trust-workspace
Who it’s for: Developers who want a spec-driven agentic IDE/CLI from AWS, with a usable free tier for small tasks — and paid tiers that put several flagship models on one credit pool.
2. Aider — 9.3/10
Open-source AI pair programming in the terminal. Tool details
Pricing: Free open source (Apache 2.0); pay your LLM provider · Free tier: Yes: free tool, BYO API key or local models
3/3 runs fixed our seeded cart bug (4/4 tests pass) in 9-13s with a free OpenRouter model, without touching the test file. Install needed uv because pip was blocked on the system Python. CLI, free model
- Outcome
- 9
- Speed
- 10
- Cost
- 10
- DX
- 8
- Reliability
- 10
- Fixed the seeded bug correctly in 3 of 3 runs, in 9-13 seconds
- Works with free OpenRouter models, so our test cost $0
- Built-in --auto-test loop runs your tests after each edit
- pip install was refused on Debian's system Python; we needed uv
- Unattended runs need several flags (--yes-always, --message, --test-cmd)
- Free model slugs change; one we tried returned 'unavailable for free'
Who it’s for: Terminal-first developers who want an open-source pair programmer that works with any model, including free ones.
3. Claude Code — 9.3/10
Anthropic's agentic coding tool for the terminal, IDE, desktop, and browser. Tool details
Pricing: Included in Claude Pro $20/mo ($17/mo annual, $200 upfront); Max from $100/mo (5x or 20x); or API pay-as-you-go · Free tier: No (not included in Claude Free)
Anthropic Sonnet 5.5 edition (headline): Claude Code CLI fixed our seeded cart bug in 3 of 3 runs (5.7–7.1s, 5 turns each). Test file untouched. Real API spend ~$0.035 for smoke + 3 runs at Sonnet 5.5 list prices ($2/$10 per MTok). Overall 9.3 (outcome 10, speed 10, cost 7, DX 8, reliability 10). Alongside: OpenRouter free-model edition the same day also scored 9.3 at $0 (cohere/north-mini-code:free; slower, free-tier cost 10) — docs/tests/claude-code/RESULTS.md. Opus not run. Anthropic Sonnet 5.5 API
- Outcome
- 10
- Speed
- 10
- Cost
- 7
- DX
- 8
- Reliability
- 10
- Fixed the seeded bug in 3/3 runs with Anthropic Sonnet 5.5 in about 6 seconds
- Real API cost about $0.01 per T3 run at Sonnet 5.5 list prices
- Did not modify the test file in any run
- OpenRouter free edition also available at $0 for CLI-loop testing (also 9.3)
- No Claude Free plan access — Anthropic models need Pro, Max, or API credits
- Cost score 7 reflects pay-as-you-go API, not a free tier
- Needs --dangerously-skip-permissions for unattended sandbox runs
- Opus edition not tested (Sonnet already maxed Outcome on this T3)
Who it’s for: Developers who want Anthropic's terminal agent on Sonnet/Opus (Pro, Max, or API). Headline score is Anthropic Sonnet 5.5 via API. A separate OpenRouter free edition (also 9.3) tests the CLI with a small free model only.
4. Cline — 9.2/10
Open-source autonomous coding agent for VS Code. Tool details
Pricing: Extension free; Teams $20/user/mo (first 10 seats free); Enterprise custom · Free tier: Yes: free for individuals, pay inference only
3/3 headless CLI runs fixed our seeded cart bug (4/4 tests pass) in 24-35s with a free OpenRouter model, without editing the test file. CLI, free model
- Outcome
- 9
- Speed
- 9
- Cost
- 10
- DX
- 8
- Reliability
- 10
- Headless CLI with a -y mode ran start to finish with no prompts
- Fixed the seeded bug in 3 of 3 runs and never touched the test file
- Works with free OpenRouter models, so our test cost $0
- Slower than Aider on the same model (24-35s vs 9-13s)
- Warns on Node versions below 22.15
- The -k flag saves your API key into the config directory
Who it’s for: Developers who like Cline in VS Code and want the same agent in a terminal or CI, with any model.
5. GitHub Copilot CLI — 9.2/10
GitHub's Copilot coding agent in the terminal, included in Copilot Free. Tool details
Pricing: Copilot Free $0 (monthly AI Credits allowance); Pro $10/mo (1,500 credits); Pro+ $39/mo; Max $100/mo · Free tier: Yes: Copilot Free includes the CLI with a monthly AI Credits allowance, Auto model only
3/3 runs fixed our seeded cart bug (4/4 tests pass) in 22-26s on Copilot Free, using 0.16-0.27 AI Credits each. It used our existing gh login with no browser step and never touched the test file. Copilot Free CLI
- Outcome
- 9
- Speed
- 9
- Cost
- 9
- DX
- 9
- Reliability
- 10
- Fixed the seeded bug correctly in 3 of 3 runs, in 22-26 seconds
- Runs headlessly with an existing GitHub CLI login (GH_TOKEN), no browser step
- Ran the test suite itself before finishing
- Copilot Free is limited to the Auto model
- The Free AI Credits allowance isn't stated in GitHub's docs, so heavy use is hard to plan
- Unattended runs need --allow-all-tools, which lets it run any command in the folder
Who it’s for: Developers who already use GitHub and want a free terminal agent without setting up an API key.
6. OpenCode — 9.2/10
Open-source AI coding agent for the terminal. Tool details
Pricing: Go $10/mo; Go Plus $40/mo; Zen pay-as-you-go ($20 prepaid) · Free tier: Yes: open-source agent free with own keys; some free Zen models
3/3 runs: fixed a seeded cart-discount bug (2 failing tests) in 18-22s with a free Zen model and no account or API key, without touching the tests. Only task T3 was run. In scripts, opencode run hangs silently if stdin is left open. CLI, free model
- Outcome
- 9
- Speed
- 10
- Cost
- 10
- DX
- 7
- Reliability
- 10
- Solved our bug-fix task 3/3 in about 20s
- Free Zen models work with no account or API key
- Minimal, correct diffs that left the tests untouched
- opencode run hung silently in a script until stdin was redirected from /dev/null
- Free model names and availability change over time
- We only ran the bug-fix task (T3), not full app builds
Who it’s for: Developers who want an open-source terminal coding agent they can try for free and later point at their own model keys.
7. Memdoor — 9.1/10
Lightweight open-source coding and automation agent in one CLI binary for macOS, Linux and Windows. Run it locally or over SSH, headless from scripts, CI or cron, with multi-step YAML workflows, approval gates and a decision model that trims token use. Bring your own key or a local model. Tool details
Pricing: Free and open source (Apache 2.0): the agent, the decision model and workflows. Pro is $10/month for phone remote control and workflow state kept on memdoor.ai. Every model call runs on your own key · Free tier: Yes: the CLI, decision model and workflows are free; bring your own model key (for example OpenRouter) or run a local model with memdoor connect local. No account needed
Memdoor fixed our seeded cart discount bug in 3 of 3 headless runs (35–47s each) with a free OpenRouter model, never touched the test file, and printed its own test receipt. Cost $0. Overall 9.1 (outcome 10, speed 8, cost 10, DX 6, reliability 10). DX lost points because the default free-model auto-pick hit an OpenRouter 403 and pinning a model needed environment variables. CLI, BYOK
- Outcome
- 10
- Speed
- 8
- Cost
- 10
- DX
- 6
- Reliability
- 10
- Fixed the seeded bug in 3/3 runs with a free model
- Single binary, no account, clean --json output for scripts and CI
- Ends each run with a receipt showing the tests it ran before and after
- Did not modify the test file in any run
- Default free-model auto-pick failed with an OpenRouter 403 in our test
- Pinning a specific model needed AI_GATEWAY_* environment variables
- Slower than paid-model agents (35–47s per run on a free model)
Who it’s for: Developers who want a small BYOK terminal agent they can run headless in CI, cron or over SSH, and script into repeatable multi-step workflows.
8. OpenHands — 9.1/10
Open-source platform for software engineering agents (MIT). Self-host with Agent Canvas, a headless CLI, an SDK, or use OpenHands Cloud. Bring your own LLM key; Cloud also offers at-cost hosted models and a limited free BYOK tier. Tool details
Pricing: Agent Canvas free to self-host (MIT, BYOK, single shared identity). Teams $500/mo up to 10 users (+$50/seat), self-hosted with RBAC. Enterprise custom. OpenHands Cloud: free BYOK tier with daily/parallel conversation limits; hosted models at provider cost with no markup · Free tier: Yes: self-host Agent Canvas / CLI / SDK free with your own model key; Cloud free BYOK tier for individuals with usage limits. No card required for local BYOK
OpenHands CLI headless fixed our seeded cart discount bug in 3 of 3 runs (42–51s each) with a free Gemini key, never touched the test file. Cost $0. Overall 9.1 (outcome 10, speed 8, cost 10, DX 6, reliability 10). DX lost points because Gemini free context caching caused 429s until we seeded agent_settings and forced caching_prompt=False — there is no simple CLI/env switch. headless CLI, BYOK
- Outcome
- 10
- Speed
- 8
- Cost
- 10
- DX
- 6
- Reliability
- 10
- Fixed the seeded bug in 3/3 headless runs with a free model
- Did not modify the test file in any run
- Self-host / BYOK path works with no OpenHands Cloud account
- Large open-source project (~92.6k GitHub stars on 2026-11-04)
- Default Gemini path uses context caching that the free Gemini tier rejects (429); turning it off needed a settings seed + JSON patch
- CLI TUI is in maintenance mode; docs steer new local users to Agent Canvas
- We only scored the headless CLI edition, not Agent Canvas or Cloud
Who it’s for: Teams that want an open-source coding agent they can self-host or run headless in CI with their own model keys, without locking into one cloud vendor.
Not yet tested
- Agent Manager — not yet tested
- Anything — not yet tested
- Conducted — not yet tested
- Crewplane — not yet tested
- Devin — not yet tested
- Mirror (Reflection) — not yet tested
- Parallax (Conifer) — not yet tested
- psi — not yet tested
- Roomote (formerly Roo Code) — not yet tested
- Ski — not yet tested
- T3 Code — not yet tested
- ThinkRail (JetBrains) — not yet tested
- Wonder — not yet tested
Related compares
- Cursor vs Claude Code
- Cursor vs Devin Desktop (formerly Windsurf)
- Cursor vs GitHub Copilot
- Lovable vs Bolt.new
- Lovable vs v0
- Claude Code vs OpenAI Codex
- Cursor vs Kiro
- Kiro vs GitHub Copilot
- Kiro vs Devin Desktop (formerly Windsurf)
- GitHub Copilot vs Devin Desktop (formerly Windsurf)
- v0 vs Bolt.new
- Bolt.new vs Base44
- Base44 vs Lovable
- Bolt.new vs Replit Agent
- v0 vs Replit Agent
- Aider vs Cline
- Cline vs OpenCode
- Aider vs OpenCode
- Cline vs OpenAI Codex
- Jules vs Gemini CLI
- Lovable vs Replit Agent
- Cursor vs Zed
- Kiro vs Zed
- GitHub Copilot vs Zed
- Aider vs OpenAI Codex
- OpenCode vs OpenAI Codex
- v0 vs Base44
- Lovable vs Google AI Studio
- Bolt.new vs Google AI Studio
- GitHub Copilot CLI vs Aider
- GitHub Copilot CLI vs OpenCode
- GitHub Copilot CLI vs OpenAI Codex
- GitHub Copilot CLI vs Cline
- v0 vs Google AI Studio
- Base44 vs Replit Agent
- Base44 vs Google AI Studio
- Replit Agent vs Google AI Studio
- OpenAI Codex vs Gemini CLI
- Jules vs OpenAI Codex
- Aider vs Gemini CLI
- Cline vs Gemini CLI
- Aider vs Reason
- Cline vs Reason
- OpenCode vs Reason
- OpenHands vs Claude Code
- Amp vs Claude Code
- TRAE vs OpenAI Codex
- Memdoor vs Aider
FAQ
What is the best AI Coding Tools in our tests?
Kiro has the highest recorded overall score on this page, 9.7/10. That score is for the task and edition recorded for that tool, not a purchase ranking against a tool tested on a different task.
Are rankings paid?
No. Scores come from our own tests and are never for sale. See our disclosure.
How fresh is this ranking?
The latest recorded check or test date on this page is 2026-11-12.
Can Kiro use Claude Opus and GPT-5.6 cheaply?
On paid plans, yes relative to buying each vendor's own top subscription: Pro is $20/mo for 1,000 credits and can select Claude Opus 5.5 (2.0× credits), Claude Sonnet 5.5 (1.3×), and GPT-5.6 Sol/Terra/Luna (4.4×/2.2×/0.6× vs Auto), per kiro.dev/docs/models checked 2026-11-02. Free cannot use those flagships — only Auto, Sonnet 4.5/4.0, and listed open-weight models.
What models does Kiro Free include?
Auto, Claude Sonnet 4.5, Claude Sonnet 4.0, DeepSeek 3.2, MiniMax M2.5, GLM-5, MiniMax M2.1, and Qwen3 Coder Next, with Free's 50 monthly credits and rate limits (models page, checked 2026-11-02).
Is this the same as Best Vibe Coding Tools?
No. This page is one scoreboard ordered by recorded overall score across app builders, editors, and agents. Best Vibe Coding Tools groups the same categories in the prompt-to-app path and leads with app builders.
Best free AI Coding Tools · All rankings · All tools · Best AI Coding Agents · Best Vibe Coding Tools
Scores come from our own tests and are never for sale; sponsored placements are always labelled. Some links are affiliate links (currently Railway). Disclosure