Claude Mythos 5 is Anthropic's language model with a 1.0M context window and up to 128K output tokens, starting at $10.00 / 1M input and $50.00 / 1M output. A next-generation Claude LLM succeeding Claude Mythos Preview, available through Project Glasswing for advanced reasoning and agentic workloads.
Specifications
Canonical IDanthropic-claude-5-mythos
TypeLanguage
StatusActive
CreatorAnthropicAnthropic
Providers
Context Window1.0M tokens
Max Output128K tokens
Input ModalitiesText
Output ModalitiesText

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Pricing by Provider

US Dollar ($)
Per 1M tokens
ProviderStandardBatch
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
Cache Write 5m
$ / 1M
Cache Write 1h
$ / 1M
Input
$ / 1M
Output
$ / 1M
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Anthropic
claude-mythos-5
$10.00$50.00$1.00$12.50$20.00$5.00$25.00

Cost Calculator

US Dollar ($)
Preset:

Other Models

ModelTierReleasedContextInput / 1MOutput / 1M
Claude Fable 5Fable1.0M$10.00$50.00
Claude Opus 4.8Opus1.0M$5.00$25.00
Claude Opus 4.8 FastOpus1.0M$10.00$50.00
Claude Opus 4.7 FastOpus1.0M$30.00$150.00
Claude Opus 4.7Opus1.0M$5.00$25.00
Claude Sonnet 4.6Sonnet1.0M$3.00$15.00
Claude Opus 4.6Opus1.0M$5.00$25.00
Claude Opus 4.5Opus410K$5.00$25.00
Claude Haiku 4.5Haiku200K$1.00$5.00
Claude Sonnet 4.5Sonnet1.0M$3.00$15.00

Model IDs

anthropic-claude-5-mythos
claude-mythos-5