LiteLLMModels

Claude Mythos 5 API Pricing

As of October 10, 2026, Claude Mythos 5 costs $10.00 per 1M input tokens and $50.00 per 1M output tokens on Anthropic, with cache reads at $1.00 and cache writes at $12.50 per 1M tokens. It has a 1,000,000-token context window and returns up to 128,000 tokens per response.

By AnthropicModel ID claude-mythos-5Prices updated Checked
Input
$10.00 / 1M tokens
Output
$50.00 / 1M tokens
Cache read
$1.00 / 1M tokens
Context window
1,000,000 tokens
Max output
128,000 tokens
Providers
2
Added to LiteLLM
August 10, 2026

Claude Mythos 5 pricing by provider

2 listings across 2 providers. Token prices are in US dollars per 1M tokens. The highlighted row is the price quoted above.

ProviderModel name in LiteLLMInputOutputCache readCache writeBatch inBatch outContext
Anthropicclaude-mythos-5$10.00$50.00$1.00$12.50$5.00$25.001M
Amazon BedrockUS cross-regionus.anthropic.claude-mythos-5$11.00$55.00$1.10$13.75––1M

Other Claude Mythos 5 prices on Anthropic

Cache write, 1 hour$20.00 per 1M tokens
Web search$10.00 per 1K searches

What Claude Mythos 5 costs in practice

1,000 requests with 2,000 input and 500 output tokens each

Anthropic$45.00
Anthropic batch$22.50

100 long-document requests with 100,000 input and 2,000 output tokens each

Anthropic$110.00

Claude Mythos 5 features

Use Claude Mythos 5 with LiteLLM

Call Claude Mythos 5 through the LiteLLM Python SDK, or put it behind the LiteLLM proxy and send OpenAI-format requests to /v1/chat/completions. LiteLLM tracks the cost of every request at these prices.

Python SDK
from litellm import completion

response = completion(
    model="claude-mythos-5",
    messages=[{"role": "user", "content": "Hello!"}],
)
Proxy config.yaml
model_list:
  - model_name: claude-mythos-5
    litellm_params:
      model: claude-mythos-5
      api_key: os.environ/ANTHROPIC_API_KEY
Call the proxy
curl http://0.0.0.0:4000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-1234" \
  -d '{
    "model": "claude-mythos-5",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Claude Mythos 5 FAQ

How much does Claude Mythos 5 cost?

Claude Mythos 5 costs $10.00 per 1M input tokens and $50.00 per 1M output tokens on Anthropic, with cache reads at $1.00 and cache writes at $12.50 per 1M tokens. Batch requests cost $5.00 per 1M input tokens and $25.00 per 1M output tokens.

What is the context window of Claude Mythos 5?

Claude Mythos 5 has a 1,000,000-token context window and returns up to 128,000 tokens per response.

Which providers offer Claude Mythos 5?

Claude Mythos 5 is available from 2 providers through LiteLLM: Anthropic and Amazon Bedrock.

How do I call Claude Mythos 5 with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="claude-mythos-5", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/chat/completions from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

What features does Claude Mythos 5 support?

Claude Mythos 5 supports function calling, structured output, image input, PDF input, reasoning, prompt caching and computer use.

When did LiteLLM add Claude Mythos 5?

Claude Mythos 5 was added to LiteLLM's model price file on August 10, 2026.

Sources

Prices come from LiteLLM's open-source model_prices_and_context_window.json, which LiteLLM uses to calculate the cost of every request. Provider pricing pages:

LiteLLM docs: Anthropic, Amazon Bedrock.

Provider pages: Anthropic, Amazon Bedrock.