Compare code suggestions
Same prompt to Claude Opus, GPT-5, and Gemini 2.5 — see who handles your stack best before you commit.
For developers
One question. Every AI. Compare code suggestions, debugging takes, and architecture advice from Claude, GPT-5, Gemini, Grok, and DeepSeek — at the same time.
// Why is this returning a Promise<Promise<string>>?
async function fetchUser(id: string) {
return await fetch(`/api/users/${id}`).then(r => r.json());
} Claude Opus 4.7
.then(r => r.json()) already returns a Promise. Drop the await or skip .then.
GPT-5
Mixing await with .then is the smell. Keep one.
Gemini 2.5
TS infers the outer return as Promise<Promise<...>> because async wraps the awaited Promise.
What's in the box
Same prompt to Claude Opus, GPT-5, and Gemini 2.5 — see who handles your stack best before you commit.
Three models, three takes on the same stack trace. Surfaces fixes a single model would miss.
When models disagree on an API or version, that's the signal — synthesis flags it for you.
Per-block copy buttons. Language labels. Markdown rendered, not raw.
Keyboard-first. Submit with Cmd+Enter, jump models with Cmd+K, focus input with Cmd+/.
Watch all models stream at once. First-token latency badges so you know which is fastest for your prompt.
Pro is $4.08/mo on annual — less than a single ChatGPT Plus subscription.