Claude Mythos 5
No shutdown before this date. Claude Mythos 5 stays on the Claude API until at least Jun 9, 2027.
≥ 8 mo- Earliest retirement
- ≥ 238 daysJun 9, 2027 · Claude API
- List price · $ per 1M
- $10.00 in $50.00 outClaude API · cached input $1.00
- Context window
- 1MMax output 128K tokens
- Released
- Jun 9, 2026Anthropic
Dates on every platform
3 listings · a floor is the earliest possible date
| Platform | Model ID and status | Deprecated | Shuts down | Replacement |
|---|---|---|---|---|
| Claude APIAnthropic: Model deprecations (opens in a new tab) · checked Oct 14, 2026 | claude-mythos-5Active | – | ≥ 8 moNot sooner than | – |
| Amazon BedrockAmazon Web Services: Amazon Bedrock model card: Claude Mythos 5 (opens in a new tab) · checked Oct 14, 2026 | anthropic.claude-mythos-5Active | – | ≥ 8 moNot sooner than | – |
| Google Vertex AIAnthropic: Claude on Google Cloud Agent Platform (opens in a new tab) · checked Oct 14, 2026 | claude-mythos-5Active | – | None set | – |
Available only to organizations verified through Anthropic programs such as the Cyber Verification Program.
Served on the bedrock-mantle endpoint only.
Anthropic lists it on Google Cloud with limited availability to verified organizations.
What breaks when you move off Claude Mythos 5
No breaking changes are recorded for the move to Claude Mythos 5.1. Run your own cases on it before the date.
List prices
$ per 1M tokens, with each price’s source
| Platform | Input | Cached | Output | In effect | Source |
|---|---|---|---|---|---|
Claude APIclaude-mythos-5 | $10.00 | $1.00 | $50.00 | Jun 9, 2026Current | Anthropic: Pricing (opens in a new tab) |
Amazon Bedrockanthropic.claude-mythos-5 | $11.00 | $1.10 | $55.00 | Sep 1, 2026Current · Standard tier on the bedrock-mantle endpoint. | Amazon Web Services: AWS Price List API: AmazonBedrockFoundationModels, us-east-1 (opens in a new tab) |