claude-mythos-preview

by AnthropicChatdeprecated 2026-06-09

No source provides a description for this model.

Context
1M tokens
Max output
128,000 tokens
Released
2026-04-07
Weights
unknown

anthropic/claude-mythos-preview · also seen as us.anthropic.claude-mythos-preview, apac.anthropic.claude-mythos-preview, au.anthropic.claude-mythos-preview

Specifications

Full facts as recorded, incl. what is unknown.

Released
2026-04-07
Weights
unknown
Input
Text
Output
Text
Context window
1,000,000 max across endpoints
Max output
128,000
Providers
2
Epoch Capabilities Index
not evaluated
Direct price range
$27.50 in · $137.50 out per 1M tokens · 1 of 2 providers have a comparable price
More details
Last updated
—
Knowledge cutoff
Developer country
United States of America

Capabilities

Across all endpoints: supported if any endpoint supports it.

  • Tool calling
  • Parallel toolsunknown
  • Structured output
  • Reasoning
  • Image input
  • PDF input
  • Audio inputunknown
  • Audio outputunknown
  • Video inputunknown
  • Prompt caching
  • Web searchunknown
  • Computer use
  • System messagesunknown
  • Assistant prefill
  • Temperatureunknown
  • Streamingunknown
  • Attachmentsunknown

Endpoints

One row per provider and variant; gateways are listed separately.

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Price history

No change since 19 Oct 2026. The cheapest direct price has been $27.50 in / $137.50 out per 1M tokens at Amazon Bedrock on every data refresh since then.

Tracked from 19 Oct 2026. Headline-eligible direct prices only, so a price the sanity check flags never draws a spike. Series as JSON

Cost calculator

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Claude Mythos 52026-06-091Mfrom $10
Claude Fable Latest2026-06-091M$10 via NanoGPT
Heads up: prices are indicative list rates scraped from provider pricing pages; verify with the provider before relying on them. Report incorrect data for this model