First-party only — a session id and where you arrived from, so we can tell which pages are worth writing more of. No advertising, no third-party trackers, nothing that follows you off this site.
Every entry covers the same things: what it runs on, which models it can use, what it costs, what it is genuinely good at, and where it gets awkward. The descriptions are compiled from official documentation and changelogs — where we have not verified something, we say so rather than filling the gap.
Pricing changes constantly. Every entry links to the vendor’s own pricing page; treat that as authoritative, not us. See how we make money for our commercial relationships — there are currently none with any tool listed here.
Anthropic
Anthropic's agentic coding tool. Lives in the terminal, reads and edits your repo directly, and takes instructions from a CLAUDE.md file you write.
From $20/mo (Pro) · usage-based API also availableOpenAI
OpenAI's open-source terminal agent. Runs locally in a sandbox, with cloud delegation for longer tasks.
Included with ChatGPT Plus/Pro/Business · or API keyPaul Gauthier / community
Open-source pair programming in your terminal. Git-native: every change lands as a commit.
Free and open source · you pay your own model costsGoogle's open-source terminal agent, with a notably generous free tier for individual developers.
Free tier with a personal Google account · paid for higher limitsWarp
A reimagined terminal with agents built into the shell itself — blocks, workflows and natural-language commands.
Free tier · paid plans by AI request allowanceSourcegraph
Sourcegraph's agent, built on the assumption that unlimited reasoning beats careful token budgeting.
Usage-based · free tier availableBlock
Block's open-source, on-machine agent. Extensible through MCP, works with any model.
Free and open source · you pay model costsAnysphere
A VS Code fork built around AI. Inline completion, chat over your codebase, and a background agent — all in one editor.
Free tier · Pro $20/mo · higher tiers for heavy useWindsurf
An agentic editor built around Cascade — a flow that keeps working across files without being re-prompted each step.
Free tier · paid individual and team plansZed Industries
A very fast editor written in Rust, with an agent panel and multiplayer editing built in.
Editor free · AI features on free and paid tiersGitHub / Microsoft
The incumbent. Completion, chat and an agent mode across VS Code, JetBrains, Visual Studio and github.com.
Free tier · Pro from $10/mo · Business & Enterprise seatsCline / community
Open-source autonomous agent inside VS Code. Plan mode first, then act — with approval on every step.
Free and open source · bring your own API keyContinue
Open-source AI code assistant for VS Code and JetBrains, configured entirely by you.
Free and open source · paid hub features for teamsRoo Code / community
An open-source VS Code agent with custom modes — you define the personas and what each may touch.
Free and open source · bring your own API keyAll Hands AI
Open-source autonomous software engineer. Runs in a container, can be self-hosted entirely.
Open source and free to self-host · managed cloud is paidCognition
A fully autonomous agent you assign tickets to. It works in its own cloud environment and opens PRs.
Usage-based, priced well above assistant toolsVercel
Prompt to UI. Generates React components and full pages you can preview, iterate on, and export.
Free tier · paid plans by credit allowanceStackBlitz
Full-stack app generation in the browser. Runs Node in a WebContainer — no local setup at all.
Free daily allowance · paid token tiersReplit
Describe an app; Replit builds, hosts and deploys it — database, auth and all — in one environment.
Free tier · Core from ~$20/mo · usage-based agent checkpointsHead to head
The pairs people actually weigh against each other, with the differences that matter rather than a feature matrix.