Claude Mythos Preview: Benchmarks, Pricing & Context Window
Claude Mythos Preview is a language model from Anthropic, released in April 2026, with multimodal input.
Claude Mythos Preview is an unreleased general-purpose frontier model from Anthropic, a new tier above Opus (internal codename 'Capybara'). It identified thousands of zero-day vulnerabilities across every major operating system and web
Claude Mythos Preview benchmarks
Capability tiers
Standing within each category, adjusted for leaderboard depth.
Real tasks performance
High-confidence performance for Claude Mythos Preview across real-world prompt categories. Only 95% intervals at most 4 points wide are shown.
Performance by conversation depth
How Claude Mythos Preview holds up as conversations get longer.
Quality Tracker
Claude Mythos Preview Performance Across Datasets
Scores sourced from the model's scorecard, paper, or official blog posts
llm-stats.com - Mon Sep 14 2026Claude Mythos Preview pricing
Providers
Claude Mythos Preview starts at $25.00 per million input tokens and $125 per million output tokens via Anthropic.
| Provider | Input $/M | Cached input $/M | Output $/M | Context in / out | TTFT p95 s | Output p5 c/s | Modalities in / out |
|---|---|---|---|---|---|---|---|
 Anthropic | $25.00 | — | $125 | —/— | — | — | / |
Cached input is the discounted price for prompt tokens served from a provider cache. TTFT is time to first token. Output is characters per second; p5 is the sustained floor exceeded by 95% of observed requests.
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Claude Mythos Preview.
Claude Mythos Preview latency
Claude Mythos Preview time to first token, sustained output throughput, and failed-request rate from live model usage over the trailing 7 days.
Claude Mythos Preview examples
Recent arena outputs from Claude Mythos Preview, picked from the highest-ranked matchups.
Claude Mythos Preview license
Claude Mythos Preview is a proprietary model available under its provider's product and API terms.
- License
- Proprietary
- Hosted access
Proprietary license - usage restrictions apply
Claude Mythos Preview resources
Official sources for Claude Mythos Preview: paper or system card, official launch post.
Claude Mythos Preview vs other models
The most-compared alternatives to Claude Mythos Preview are GPT-6 Astra, Kimi K2.6, Claude Opus 4.8. Open any pair side-by-side for benchmarks, pricing, context, and latency.
Models like Claude Mythos Preview
Models ranked just above and below Claude Mythos Preview by LLM Stats score.
FAQ
Common questions about Claude Mythos Preview.