Compare AI models
| Specifications | ||
ParametersThe learned values that shape how a model responds. B means billion and T means trillion. For mixture-of-experts models, the total count is larger than the number active for each token. Parameter count alone does not measure quality. | 2.8T | — |
Context windowHow much information the model can work with in one request, measured in tokens — pieces of words or other data. This includes your question, attachments, conversation and reply. Limits can vary by model variant and provider. | 1M | 200k |
| API pricingUSD per 1M tokens · lower wins | ||
Cheapest inputLowest input rate across every provider on OpenRouter, the lab included. The cheapest endpoint may run a quantised build or a shorter context — see "Available from" on the model page. | — | $1.10OpenAI |
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input. | — | $4.40OpenAI |
| — | $440OpenAI | |
| Overview | ||
| Company | Moonshot AI | OpenAI |
| Release date | Oct 23 2026 | Jan 31 2025 |
| Access | Closed | Closed |
| Model details | View model | View model |
Other comparisons
Kimi K3.1 Pro HighspeedvsClaude Haiku 5.5o3-mini-highvsClaude Haiku 5.5Kimi K3.1 Pro HighspeedvsGemini 4 Argono3-mini-highvsGemini 4 ArgonKimi K3.1 Pro HighspeedvsMuse Spark Openo3-mini-highvsMuse Spark OpenKimi K3.1 Pro HighspeedvsGrok 4.7o3-mini-highvsGrok 4.7Kimi K3.1 Pro HighspeedvsDeepSeek-V4.1-Flash-1017o3-mini-highvsDeepSeek-V4.1-Flash-1017Kimi K3.1 Pro HighspeedvsMistral Large 4o3-mini-highvsMistral Large 4Frequently asked questions
Kimi K3.1 Pro Highspeed and o3-mini-high don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o3-mini-high shipped 630 days before Kimi K3.1 Pro Highspeed, so benchmark comparisons should account for the intervening progress.
Context windows are 1M (Kimi K3.1 Pro Highspeed) vs 200k (o3-mini-high).
Direct benchmark comparisons are unavailable — Kimi K3.1 Pro Highspeed and o3-mini-high don't publish scores on any of the same benchmarks.