Current model · Anthropic
Claude Mythos 5.2 benchmarks, pricing and specs
Claude Mythos 5.2 is an Anthropic model released on November 9, 2026 that takes text and image input and produces text. It costs $8 per 1M input tokens and $40 per 1M output tokens and accepts up to 1,000,000 tokens of context.
- Per 1M input tokens
- $8Listed today
- Per 1M output tokens
- $40Listed today
- Context window
- 1M#28 of 70 current models
Data verified November 10, 2026 · Dataset 2026-11-10
Specs
Key facts
- Provider
- Anthropic
- Model family
- Claude Mythos
- Release date
- November 9, 2026
- Status
- Current
- Access
- limited access
- API model id
- claude-mythos-5-2
- Context window
- 1,000,000 tokens
- Max output
- 128,000 tokens
- Input
- text, image
- Output
- text
- Task families
- text, multimodal
- Declared capabilities
- reasoning
Charts
Against every current text model
Where Claude Mythos 5.2 lands among the current models of its task, on every independent benchmark, on price and on context.
Where it stands
52 of 61 list a lower price per 1M input tokens. Each bar is the share of current models it beats.
Price and context
Price per 1M input tokens
#53of 61
$8 · cheaper than 12%
Price per 1M output tokens
#53of 61
$40 · cheaper than 12%
Context window
#28of 70
1M tokens · longer than 23%
Price
Claude Mythos 5.2 pricing
It is the #8 most expensive of 61 current text models priced per 1M input tokens.
Benchmarks
Independent benchmark results
Scores come from independent evaluators that ran the model themselves, pinned to a dated snapshot. Rank is among current models in the same snapshot. Anthropic's own launch figures are in the next section, because they are not measured the same way.
No independent benchmark has published a result for Claude Mythos 5.2 yet. It is still compared below on price, context and capabilities.
Provider results
Reported by Anthropic
Anthropic's own results for Claude Mythos 5.2, beside the rivals it chose, as its table lists them. Labs pick the benchmarks and run them their own way, so compare within one table only. Internal benchmarks and other evaluators' indexes are left out.
Claude Fable 5.2 launch table, November 9, 2026Anthropic · 2026-11-10
| Benchmark | Claude Fable 5.2 | Claude Mythos 5.2 | Claude Fable 5.1 | Claude Opus 5.5 | GPT-6 Astra | Gemini 4 Carbon |
|---|---|---|---|---|---|---|
| FrontierCode 2.0best effort level per model | 49.1% | Not listed | 32.4% | 45.5% | 42.8% | 41.1% |
| FrontierSWE 2 | 69.9% | Not listed | 56.3% | 62.3% | 65.5% | 61.2% |
| AutomationBenchZapier | 51.4% | Not listed | 31.4% | 42.5% | 41.4% | 53.9% |
| Terminal-Bench-Science 0.1 | 74.6% | 75.3% | 52.6% | 58.7% | 68.1% | 64.8% |
| WANDRrelaxed score | 82.1% | Not listed | 68.7% | 72.3% | Not listed | Not listed |
| OSWorld 2.1offline set, partial credit | 89.3% | Not listed | 83.5% | 87.2% | 79.5% | 81.5% |
| Remote Labor Index | 41.3% | Not listed | 17.9% | 21.3% | 20.8% | Not listed |
| Humanity's Last Examwith tools | 74.2% | Not listed | 65.6% | 67.7% | 57.2% | Not listed |
| Chartographyno tools | 73.4% | Not listed | 44.8% | 64.4% | 71.0% | 72.5% |
Anthropic's table from the Claude Fable 5.2 and Mythos 5.2 announcement, each model at its highest available effort, with Anthropic's safeguards on; competitor figures come from their developers' system cards or the benchmarks' leaderboards. On FrontierCode 2.0 Fable 5.2 and 5.1 ran at xhigh effort and Gemini 4 Carbon at medium. Anthropic gives a Mythos 5.2 score for Terminal-Bench-Science only. Left out here: Anthropic's own evaluations (CVE Rediscovery, de novo binder design, RoboDojo Sim), Irregular's CyScenarioBench, where each lab's score covers different tasks, and Artificial Analysis's AA-Briefcase.
Fit
Strengths, cautions and best uses
- Strengths
- Anthropic's model for cybersecurity engineering and other dual-use work, with the specifications and price of Claude Fable 5.2: a 1M-token context, 128,000 output tokens, $8 input and $40 output per 1M tokens
- Anthropic reports 75.3% on Terminal-Bench-Science 0.1, the top score in its launch table, and says it found 10.2% more vulnerabilities than Claude Opus 5.5 and 14.4% more than Claude Mythos 5.1 on its own CVE Rediscovery evaluation
- Far fewer sandbox escapes than earlier Mythos models in Anthropic's adversarial test: 3.1% of scenarios, against 21% for Mythos 5.1 and 39% for Mythos 5
- Cautions
- Limited access: only organisations verified through Anthropic's programs, such as the Cyber Verification Program, can call it
- No independent benchmark has scored it; every number for it comes from Anthropic
- Best for
- Vetted security teams finding, reproducing and fixing vulnerabilities
- Dual-use research in security or biology that Claude Fable 5.2's safeguards block
From benchmark to production
Building on Claude Mythos 5.2?
Public scores rarely hold on your own data. We test it against the alternatives on your real tasks, then build the agent or pipeline around the model that wins.
AI Model Cost AuditLaunch price $100, regular price $150What the audit includes
Alternatives
Alternatives to Claude Mythos 5.2
The closest current text models by price. The cheapest model that scores as well or better is listed first; failing that, the cheapest one within 3% of the benchmark's scale.
On score and price
Claude Mythos 5.2 beside the 4 alternatives listed below, on Arena Text and on blended price per 1M tokens.
Arena Text
Measured November 9, 2026, higher is better
- Claude Mythos 5.2
- Not scored
- Claude Fable 5.2
- Not scored
- Claude Fable 5
- 1,504
- GPT-6 Astra
- 1,474
- GPT-5.6 Cyber
- Not scored
Blended price per 1M tokens
Listed today, lower is better
- Claude Mythos 5.2
- $16
- Claude Fable 5.2
- $16
- Claude Fable 5
- $20
- GPT-6 Astra
- $20
- GPT-5.6 Cyber
- $28.13
Claude Fable 5.2
- Same price per 1M input tokens, $8
Claude Fable 5
- 25% more per 1M input tokens, $10 vs $8
GPT-6 Astra
- 25% more per 1M input tokens, $10 vs $8
- From OpenAI
GPT-5.6 Cyber
- 56% more per 1M input tokens, $12.50 vs $8
- 400K context window vs 1M
- From OpenAI
Further reading
More on Claude Mythos 5.2
Compare Claude Mythos 5.2 with
- Claude Mythos 5.2 vs Claude Fable 5.1
- Claude Mythos 5.2 vs Claude Fable 5.2
- Claude Mythos 5.2 vs Claude Fable 5
- Claude Mythos 5.2 vs Claude Mythos 5.1
- Claude Mythos 5.2 vs Claude Opus 5.5
- Claude Mythos 5.2 vs Gemini 4 Carbon
- Claude Mythos 5.2 vs GPT-5.6 Cyber
- Claude Mythos 5.2 vs GPT-6 Astra
- Claude Mythos 5.2 vs GPT-6 Cyber
Articles about Claude Mythos 5.2
- Claude Fable 5.2 vs Opus 5.5, GPT-6 Astra and Mythos 5.2November 10, 2026
Other Claude Mythos models
FAQ
Claude Mythos 5.2 FAQ
How much does Claude Mythos 5.2 cost?
Claude Mythos 5.2 costs $8 per 1M input tokens and $40 per 1M output tokens at the standard tier. It is the #8 most expensive of 61 current text models priced per 1M input tokens. Source: Anthropic, verified November 10, 2026.
What is the context window of Claude Mythos 5.2?
Claude Mythos 5.2 accepts up to 1,000,000 tokens of context. It can return up to 128,000 tokens in one response. That ranks #28 of 70 current text models by context length.
What benchmark results has Anthropic published for Claude Mythos 5.2?
In the Claude Fable 5.2 launch table (November 9, 2026), Anthropic reports 75.3% on Terminal-Bench-Science 0.1. These are Anthropic's own figures, beside the rivals it chose, not independent measurements.
Is Claude Mythos 5.2 open source or API only?
Neither. Anthropic offers Claude Mythos 5.2 only to organizations it approves, with no public API and no published weights; the cautions on this page say who can apply.
What are the best alternatives to Claude Mythos 5.2?
The closest current alternatives by price and measured performance are Claude Fable 5.2 (same price per 1M input tokens, $8), Claude Fable 5 (25% more per 1M input tokens, $10 vs $8), GPT-6 Astra (25% more per 1M input tokens, $10 vs $8) and GPT-5.6 Cyber (56% more per 1M input tokens, $12.50 vs $8).
Sources
Sources
- Introducing Claude Fable 5.2 and Claude Mythos 5.2 · Anthropic · official · verified November 10, 2026
- Claude Mythos 5.2 model overview · Anthropic · official · verified November 10, 2026
- Claude pricing: Fable 5.2 and Mythos 5.2 · Anthropic · official · verified November 10, 2026
All 262 sources behind the benchmarks, with their versions, licenses and notes, are in the source catalog.
Cite this page
Van Data Team. "Claude Mythos 5.2 Benchmarks, Pricing and Specs." AI Model Benchmark Dataset 2026-11-10. https://vandatateam.com/ai-model-benchmarks/claude-mythos-5-2
Reuse the data: JSON · CSV · or explore every model in the AI model benchmark comparison.
Production evaluation
Deciding whether Claude Mythos 5.2 fits your workload?
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