# Claude Mythos Preview API pricing retired 

Claude Mythos Preview was deprecated by [Anthropic](https://apicostcheck.com/providers/anthropic/) on 2026-06-09. The prices below are the last ones we recorded (data last changed 2026-10-13); they no longer appear in the calculators or rankings. 

| | |
| --- | --- |
| Input | $10.00 / 1M tokens |
| Output | $50.00 / 1M tokens |
| Cached input | $1.00 / 1M tokens |
| Cache write | $12.50 / 1M tokens |
| Cache write (1-hour TTL) | $20.00 / 1M tokens |
| Minimum cacheable prompt | 512 tokens |

## Last prices in context

Its last price was $10.00 input / $50.00 output per 1M. The cheapest current Anthropic model, [Claude Haiku 5.5](https://apicostcheck.com/models/claude-haiku-5-5/), costs $0.10 / $0.50 (1% of the old output price), and the closest current Anthropic model by price is [Claude Fable 5.1](https://apicostcheck.com/models/claude-fable-5-1/) ($10.00 / $50.00). Before migrating, re-run your own evaluation on the replacement; every current Anthropic price is on the [Anthropic hub](https://apicostcheck.com/providers/anthropic/) and changes appear in the [monthly roundups](https://apicostcheck.com/news/).

## Current Anthropic models

- [Claude Haiku 5.5](https://apicostcheck.com/models/claude-haiku-5-5/) — $0.10 / $0.50
- [Claude Haiku 4.5](https://apicostcheck.com/models/claude-haiku-4-5/) — $1.00 / $5.00
- [Claude Sonnet 5.5](https://apicostcheck.com/models/claude-sonnet-5-5/) — $2.00 / $10.00
- [Claude Sonnet 5](https://apicostcheck.com/models/claude-sonnet-5/) — $2.00 / $10.00
- [Claude Sonnet 4.6](https://apicostcheck.com/models/claude-sonnet-4-6/) — $3.00 / $15.00 

## Price history

No price changes recorded since tracking began on 2026-10-08.

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Source: https://apicostcheck.com/models/claude-mythos-preview/ · prices in USD per 1M tokens, synced 2026-10-13 08:00 UTC · Free to reuse with a link to https://apicostcheck.com (CC BY 4.0). Prices derived from LiteLLM's model price list, MIT License, (c) 2023 Berri AI.