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. | — | 48B |
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 | 1M |
| These models have no shared benchmark scores. | ||
Terminal-Bench 4.0Agentic terminal coding — Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Version 4.0 recalibrated how much time, CPU and memory each task gets, removed eight tasks and fixed nineteen, so fewer runs fail for reasons that have nothing to do with the model. Scores are not comparable with earlier versions. Higher is better. | 60.9% | — |
| Overview | ||
| Company | Anthropic | Moonshot AI |
| Release date | Sep 1 2026 | Oct 30 2025 |
| Access | Closed | Open Weight |
| Model details | View model | View model |
Other comparisons
Claude Mythos 5.1vsGPT-6.1 SolKimi LinearvsGPT-6.1 SolClaude Mythos 5.1vsGemini 4 ArgonKimi LinearvsGemini 4 ArgonClaude Mythos 5.1vsMuse Spark OpenKimi LinearvsMuse Spark OpenClaude Mythos 5.1vsGrok 4.7Kimi LinearvsGrok 4.7Claude Mythos 5.1vsDeepSeek-V4.1-Flash-1017Kimi LinearvsDeepSeek-V4.1-Flash-1017Claude Mythos 5.1vsMistral Large 4Kimi LinearvsMistral Large 4Frequently asked questions
Claude Mythos 5.1 and Kimi Linear don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Kimi Linear shipped 306 days before Claude Mythos 5.1, so benchmark comparisons should account for the intervening progress.
Context windows are 1M (Claude Mythos 5.1) vs 1M (Kimi Linear). Claude Mythos 5.1 is closed, while Kimi Linear is open weight.
Direct benchmark comparisons are unavailable — Claude Mythos 5.1 and Kimi Linear don't publish scores on any of the same benchmarks.