Claude Mythos Preview
Claude Mythos Preview is Anthropic's language model with a 1.0M context window and up to 128K output tokens, starting at $10.00 / 1M input and $50.00 / 1M output. A preview-stage Claude model under the 'Mythos' codename, designed for exploratory or experimental use cases within Anthropic's model lineup.
Capabilities
Input2/5
Text·
Image✓
Audio·
Video·
PDF✓
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities5/13
Reasoning✓
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling·
Structured Outputs✓
Native JSON Schema·
Web Search·
URL Context·
Computer Use✓
Code Execution·
File Search·
Prompt Caching✓
Assistant Prefill·
Pricing by Provider
US Dollar ($)
Per 1M tokens
| Provider | Standard | |||
|---|---|---|---|---|
| Input $ / 1M | Output $ / 1M | Cache Read $ / 1M | Cache Write 5m $ / 1M | |
| $10.00 | $50.00 | $1.00 | $12.50 | |
Cost Calculator
US Dollar ($)
Preset:
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| Claude Opus 5.3 | — | — | — | — | Available |
| Claude Sonnet 5.3 | — | — | — | — | Available |
| Claude Opus 5 | 1.0M | $2.50 | $12.50 | Available | |
| Claude Opus 5 Fast | 1.0M | $10.00 | $50.00 | Available | |
| Claude Sonnet 5 | 1.0M | $1.00 | $5.00 | Available | |
| Claude Fable 5 | 1.0M | $5.00 | $25.00 | Available | |
| Claude Fable 5.3 | — | — | — | — | Available |
| Claude Mythos 5 | — | 1.0M | $10.00 | $50.00 | Available |
| Claude Opus 5 Claude Opus 4.8 | — | — | — | $50.00 | Available |
| Claude Opus 4.8 | 1.0M | $2.50 | $12.50 | Available | |
| Claude Mythos Preview | — | 1.0M | $10.00 | $50.00 | Current |