Claude Mythos 5.1

AnthropicProprietary1M context

Claude Mythos 5.1 is a proprietary model from Anthropic with a 1M-token context window. 2 providers list it, from $10.00 per million input tokens and $50.00 per million output tokens (Anthropic).

Maker
Anthropic
Licence
Proprietary
Context window
1M
Providers listed
2
Lowest input, per 1M
$10.00
Lowest output, per 1M
$50.00
Anthropic's own API, per 1M
$10.00 in · $50.00 out

Providers serving Claude Mythos 5.1

Cheapest first, by the blended rate of three input tokens to one output token. Prices in US dollars per million tokens, as of 26 Oct 2026.

ProviderInputOutputContextToolsJSON modeOpenAI-compatibleModel ID
Anthropic
$10.00$50.001MYesYes—claude-mythos-5-1
Amazon Bedrock
$11.00$55.001MYesYes—claude-mythos-5-1

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