Claude Mythos 5.2 API pricing
Anthropic charges $8 per million input tokens and $40 per million output tokens for Claude Mythos 5.2 (claude-mythos-5-2), and $0.2 per million cached input tokens. A typical request of 1,000 input and 500 output tokens costs $0.028, or $0.014 through the batch API.
Claude Mythos 5.2 price per million tokens
| Token type | Standard | Batch API |
|---|---|---|
| Input | $8 | $4 |
| Cached input | $0.2 | $0.1 |
| Output | $40 | $20 |
API model id: claude-mythos-5-2. Claude Mythos 5.2 supports a 1M-token context window, up to 128K output tokens, image input, tool calling and reasoning.
What Claude Mythos 5.2 costs per request
| Request | 1 request | 1,000 requests | 1M requests |
|---|---|---|---|
| Short chat message (300 in, 200 out) | $0.0104 | $10.40 | $10,400.00 |
| Typical request (1K in, 500 out) | $0.028 | $28.00 | $28,000.00 |
| Long document summary (20K in, 1K out) | $0.20 | $200.00 | $200,000.00 |
| Coding agent step (50K in, 2K out) | $0.48 | $480.00 | $480,000.00 |
At standard rates. A token is about 4 characters of English text, so 1,000 tokens is roughly 750 words. Anthropic counts tokens with its own tokenizer, so the same text can be a different number of tokens.
How Claude Mythos 5.2 compares
- For a typical request, Claude Mythos 5.2 is cheaper than 7% of the other models on apicost.app.
- GPT-6 Astra from OpenAI costs $10 input and $50 output per million tokens, so a typical request is $0.035: 1.3× the price of Claude Mythos 5.2.
- Gemini 3.1 Pro Preview from Google Gemini costs $2 input and $12 output per million tokens, so a typical request is $0.008: 3.5× cheaper than Claude Mythos 5.2.
- DeepSeek V4 Pro from DeepSeek costs $1.32 input and $3.96 output per million tokens, so a typical request is $0.0033: 8.5× cheaper than Claude Mythos 5.2.
Claude Mythos 5.2 price history
Claude Mythos 5.2 has cost $8 per million input tokens and $40 per million output tokens since it was added to the price list on November 14, 2026.
Every LLM API price increase, cut, new and retired model, dated: LLM API price changes.
Models with a similar price
| Model | Provider | Input / 1M | Cached input / 1M | Output / 1M | Typical request |
|---|---|---|---|---|---|
| GPT-5.5 | OpenAI | $5 | $0.5 | $30 | $0.02 |
| Claude Fable 5.2 | Anthropic | $8 | $0.2 | $40 | $0.028 |
| GPT-6 Astra | OpenAI | $10 | $1 | $50 | $0.035 |
| GPT-6 Astra Law | OpenAI | $10 | $1 | $50 | $0.035 |
| Claude Fable 5 | Anthropic | $10 | $1 | $50 | $0.035 |
| Claude Fable 5.1 | Anthropic | $10 | $0.25 | $50 | $0.035 |
| Claude Mythos 5 | Anthropic | $10 | $1 | $50 | $0.035 |
| Claude Mythos 5.1 | Anthropic | $10 | $0.25 | $50 | $0.035 |
Other Anthropic models
- Claude Fable 5 $10 / $50
- Claude Fable 5.1 $10 / $50
- Claude Fable 5.2 $8 / $40
- Claude Haiku 4.5 $1 / $5
- Claude Haiku 5.5 $0.1 / $0.5
- Claude Mythos 5 $10 / $50
- Claude Mythos 5.1 $10 / $50
- Claude Opus 4.5 $5 / $25
- Claude Opus 4.6 $5 / $25
- Claude Opus 4.7 $5 / $25
- Claude Opus 4.8 $5 / $25
- Claude Opus 5 $5 / $25
- Claude Opus 5.5 $4 / $20
- Claude Sonnet 4.5 $3 / $15
- Claude Sonnet 4.6 $3 / $15
- Claude Sonnet 5 $2 / $10
- Claude Sonnet 5.5 $2 / $10
Every Anthropic model side by side, with batch, caching and long-context prices: Claude API pricing (Anthropic). Ways to pay less: batch API, prompt caching, the cheapest models.
Questions and answers
How much does the Claude Mythos 5.2 API cost?
Anthropic charges $8 per million input tokens and $40 per million output tokens for Claude Mythos 5.2 (claude-mythos-5-2), and $0.2 per million cached input tokens. A typical request of 1,000 input and 500 output tokens costs $0.028, or $0.014 through the batch API.
Has the Claude Mythos 5.2 API price changed?
No. Claude Mythos 5.2 has cost $8 per million input tokens and $40 per million output tokens since it was added to the price list on November 14, 2026.
Is there a cheaper way to use Claude Mythos 5.2?
Yes. The Anthropic batch API runs requests within 24 hours for $4 per million input tokens and $20 per million output tokens. Prompt caching lowers the price of repeated input to $0.2 per million tokens.
What is the context window of Claude Mythos 5.2?
Claude Mythos 5.2 accepts up to 1,000,000 input tokens, roughly 750,000 words of English, and writes up to 128,000 output tokens per response. Filling the whole context window once costs $8.00 in input tokens.
Is Claude Mythos 5.2 cheaper than GPT-6 Astra?
Yes. GPT-6 Astra from OpenAI costs $10 input and $50 output per million tokens, so a typical request is $0.035: 1.3× the price of Claude Mythos 5.2.
Source: Anthropic pricing, via the LiteLLM price list.