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Claude Mythos 5

AnthropicReleased Jun 9, 2026Current

Score basis

Claude Mythos 5 is behind the leaders in reasoning and coding. Too few results yet to rate agentic tasks, safety, long context, math, multimodal tasks, multilingual tasks, instruction following, or factuality.

Capability profile

Bars show the model's median result as a share of the leading model's, per capability. Select a row to see its results.

Limited2 capabilities
  1. Reasoning−27.1%2 of 6
  2. Coding−27.2%3 of 10
Not rated8 capabilities

Too few results yet to rate Agentic, Safety, Long Context, Math, Multimodal, Multilingual, Instruction Following or Factuality.

Price

$10.00input$50.00outputper million tokens

From Anthropic's own price page · All prices

Costs more than 95% of 331 priced models · 3:1 input-to-output blend, log scale

Evidence

48results on41benchmarks

  • 48 vendor-reported

From 10 sources · latest Sep 22, 2026 · How verification works

Research

2 papers reference Claude Mythos 5

Claude Mythos 5 benchmark results

48 results on 41 benchmarks, grouped by capability. Each bar is the result as a share of the capability leader's; every result links to its source.

Reasoning

LimitedFull reasoning ranking

27.1% behind the leader2 of 6 ranked benchmarks measured

Show 2 more reasoning resultsHide 2 reasoning results

Coding

LimitedFull coding ranking

27.2% behind the leader3 of 10 ranked benchmarks measured

Show 3 more coding resultsHide 3 coding results

Agentic

Not enough dataFull agentic ranking

0 of 7 ranked benchmarks measured

Math

Not enough dataFull math ranking

0 of 5 ranked benchmarks measured

Multimodal

Not enough dataFull multimodal ranking

0 of 6 ranked benchmarks measured

More results

Benchmarks outside the capability baskets. They are not ranked against a leader.

Show 29 more resultsHide 29 results

Claude Mythos 5: common questions

Who makes Claude Mythos 5?

Claude Mythos 5 is made by Anthropic.

When was Claude Mythos 5 released?

Claude Mythos 5 was released on Jun 9, 2026, according to Anthropic's own announcement.

What is Claude Mythos 5 good at?

Claude Mythos 5 is behind the leaders in reasoning and coding. Too few results yet to rate agentic tasks, safety, long context, math, multimodal tasks, multilingual tasks, instruction following, or factuality.

How much does Claude Mythos 5 cost?

Claude Mythos 5 costs $10.00 per million input tokens and $50.00 per million output tokens, according to Anthropic's own price page. At a mix of three input tokens to one output token, it costs more than 95% of the 331 priced models we track.

How many benchmarks has Claude Mythos 5 been tested on?

We track 48 results for Claude Mythos 5 on 41 benchmarks from 10 sources. The latest was recorded on Sep 22, 2026.

About this record

Where Claude Mythos 5's numbers come from, and every name it appears under.

Tracked since
Apr 26, 2026
Newest source mention
Jun 22, 2026

Where the results come from

Verification: 48 scores · 0 independently verified · 48 vendor-reported. How these tiers are assigned

From 10 sources on 1 site. www-cdn.anthropic.com supplies all of them. Bars are coloured by trust tier.

  • www-cdn.anthropic.com48

Also known as

anthropic's mythos 5claude 5 mythos/fableclaude mythosclaude mythos/fable 5mythos 5mythos fable 5mythos opus 5