Most AI coding tools still force you to choose: either a great editor or a capable agent. Cerin refused to choose.Cerin is a completely free desktop app (macOS, Windows, and Linux) that treats the agent and the editor as one system. It reads your entire codebase, drives a real terminal, and can run in Plan, Act, or full Autopilot mode. Every change shows up as a clean, line-by-line diff you can accept or reject.What makes it interesting right now is the numbers.Here’s the current comparison from independent benchmarks (Artificial Analysis Coding Agent Index, Terminal-Bench, and SWE-bench Verified):
ToolArtificial AnalysisTerminal-BenchSWE-bench VerifiedCerin72.6%86.1%89.4%Claude Code~6664.8–70.6%78.4%Codex (OpenAI)62.0%58.1%71.0%Cursor61.9%79.3%67.08%Devin61.7%Undisclosed60.8%AntigravityUndisclosed87.6%UndisclosedThese are not synthetic scores. They were run under isolated environments with zero shortcuts.The biggest practical difference I’ve noticed is how Autopilot actually works. Most agents still stop and ask for confirmation every few steps. Cerin’s Autopilot can run tests, read the failure, edit the code, re-run the suite, and keep going — while you watch every command in the same terminal you normally use.You can also switch models mid-conversation (Claude, GPT, Gemini, Kimi, or your own keys) without losing context. The shared context window goes up to 1 million tokens.It’s still early. The Autopilot isn’t perfect on every edge case. But for a free tool that already sits at the top of these leaderboards, it’s surprisingly solid.You can download it at cerin.space. No account required to try the core features.If you’ve been waiting for a free alternative that doesn’t feel like a downgrade, this one is worth testing yourself.
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