Conversation / Quote
Claude Mythos 5.1 API Price
Anthropic · claude-mythos-5.1
| Billing | USD · 1M tokens |
|---|---|
| Context Window | 1000K tokens |
| Modalities | Text |
| Deep Thinking | — |
| Batch API | 50% off (input $5 / output $25) |
| Verified Date | 2026-10-11 |
| Official pricing page | platform.claude.com/docs/en/about-claude/pricing ↗ |
Source text: the note below is the model's official text, kept in its original Chinese and not translated.
Cache read at 0.025x base input price. 1-hour cache write: $20/MTok. Mythos Preview: 1M token context window at standard pricing.
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Monthly Cost Estimate
30 days · no cache hits · list price
Free quotas, tiered pricing, batch discounts, and time-based pricing are not included; refer to official bills.
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FAQ
How much does the Claude Mythos 5.1 API cost?
Input $10/1M tokens, output $50/1M tokens
How large is the Claude Mythos 5.1 context window?
1000K tokens. Handles long documents, multi-turn conversations and large-scale inputs.
Does Claude Mythos 5.1 support prompt caching?
Yes. Cache writes cost $12.5/1M tokens and cache-hit reads cost $0.25/1M tokens. This significantly cuts the cost of repeated input — ideal for long system prompts and codebase analysis.
Which input modalities does Claude Mythos 5.1 support?
Text.
Does Claude Mythos 5.1 offer Batch API discounts?
Yes. The Batch API gets 50% off — input $5/1M tokens, output $25/1M tokens. Suited to non-realtime, asynchronous workloads.
What is the approximate monthly cost of Claude Mythos 5.1?
Depends on volume: light use (1M input + 300K output per day) ≈ $750/month; medium (5M + 1.5M) ≈ $3,750/month; heavy agents (10M + 3M) ≈ $7,500/month. Cache hits, batch discounts and tiered pricing can lower this further.
How does Claude Mythos 5.1 compare with peers on value?
Anthropic Claude Mythos 5.1 is competitively priced among comparable models; compare against GPT-4o, Claude 3.5 and Gemini 2.5. See the Pricemon market table for a full comparison.
What use cases suit Claude Mythos 5.1?
Good for: chat systems, customer support, content generation, coding assistance, data analysis.The long context supports deep-analysis scenarios.
Does Claude Mythos 5.1 have a free tier?
Check Anthropic's official pricing page for the latest free quota, trial policy and tiered pricing. Policies differ by vendor and change over time.