Kimi K2.7 CodevsGPT-6 Luna
Kimi K2.7 Code | GPT-6 Luna | |
|---|---|---|
| Specifications | ||
ParametersA rough measure of how big the model is. More parameters usually means more capable and more expensive to run, though it is a poor guide on its own — a smaller, newer model often beats a larger, older one. | 1T | — |
Context windowHow much text the model can hold in mind at once — your question, any documents you attach, the conversation so far, and its own reply. Go past it and the earliest part falls out of view. | 256k | 1.05M |
| API pricingUSD per 1M tokens · lower wins · base tier | ||
Input priceWhat you pay for everything you send the model — your question, plus any documents or earlier conversation you include with it. | $0.95 | $0.10 |
Output priceWhat you pay for the text the model writes back. It is normally the dearer half: producing an answer costs more than reading one. | $4.00 | $0.50 |
Cached input priceA reduced rate for text you send over and over. If every request starts with the same instructions or the same document, the provider keeps a copy ready and charges less to read it again. | $0.19 | $0.01 |
Cheapest inputLowest input rate across third-party providers, excluding the lab itself. The cheapest endpoint may run a quantised build or a shorter context — see "Available from" on the model page. | $0.68DeepInfra | — |
Cheapest outputLowest output rate across third-party providers, excluding the lab itself. May come from a different provider than the cheapest input. | $3.00StreamLake | — |
| Benchmarks | ||
DeepSWE 1.1Agentic coding — Artificial Analysis' independent test of deep, agentic software-engineering work — the AI has to plan and carry out substantial coding tasks end to end. (Version 1.1 of the test.) Higher is better. | 31% | 66.6% |
| BenchmarksPublished by one model only | ||
Next.js EvalsNext.js coding — Vercel's open eval of how well AI coding agents build and migrate real Next.js apps — measured as the share of tasks the agent completes successfully. Higher is better. | 74% | — |
| Overview | ||
| Company | Moonshot AI | OpenAI |
| Release date | Jun 12 2026 | Sep 22 2026 |
| Access | Open Weight | Proprietary |
Other comparisons
Kimi K2.7 CodevsClaude Opus 5.5GPT-6 LunavsClaude Opus 5.5Kimi K2.7 CodevsGemini 3.8 FlashGPT-6 LunavsGemini 3.8 FlashKimi K2.7 CodevsMuse Spark 1.3GPT-6 LunavsMuse Spark 1.3Kimi K2.7 CodevsGrok 4.7GPT-6 LunavsGrok 4.7Kimi K2.7 CodevsDeepSeek-V4.1-FlashGPT-6 LunavsDeepSeek-V4.1-FlashKimi K2.7 CodevsMistral Medium 3.5GPT-6 LunavsMistral Medium 3.5
Frequently asked questions
GPT-6 Luna leads Kimi K2.7 Code on 1 of the 1 benchmark they both report (DeepSWE 1.1). GPT-6 Luna is cheaper on both input and output: $0.10 vs $0.95 per million input tokens, and $0.50 vs $4.00 per million output tokens. Figures are base-tier rates. Kimi K2.7 Code shipped 102 days before GPT-6 Luna, so benchmark comparisons should account for the intervening progress.
Context windows are 256k (Kimi K2.7 Code) vs 1.05M (GPT-6 Luna). Kimi K2.7 Code is open weight, while GPT-6 Luna is proprietary.
On DeepSWE 1.1, GPT-6 Luna leads at 66.6% vs Kimi K2.7 Code at 31%.