Claude 2.1vsClaude Mythos 5.1
Claude 2.1 | Claude Mythos 5.1 | |
|---|---|---|
| Specifications | ||
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. | 200k | 1M |
| BenchmarksPublished by one model only | ||
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 | Anthropic |
| Release date | Nov 21 2023 | Sep 1 2026 |
| Access | Proprietary | Proprietary |
Other comparisons
Claude 2.1vsGPT-6 AstraClaude Mythos 5.1vsGPT-6 AstraClaude 2.1vsGemini 3.8 FlashClaude Mythos 5.1vsGemini 3.8 FlashClaude 2.1vsMuse Spark 1.3Claude Mythos 5.1vsMuse Spark 1.3Claude 2.1vsGrok 4.6Claude Mythos 5.1vsGrok 4.6Claude 2.1vsDeepSeek-V4.1-FlashClaude Mythos 5.1vsDeepSeek-V4.1-FlashClaude 2.1vsMistral Medium 3.5Claude Mythos 5.1vsMistral Medium 3.5
Frequently asked questions
Claude 2.1 and Claude Mythos 5.1 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude 2.1 shipped 1015 days before Claude Mythos 5.1, so benchmark comparisons should account for the intervening progress.
Context windows are 200k (Claude 2.1) vs 1M (Claude Mythos 5.1).
Direct benchmark comparisons are unavailable — Claude 2.1 and Claude Mythos 5.1 don't publish scores on any of the same benchmarks.