Claude Platform Docs

モデルと料金特化型モデル

Claude Mythos 5.1Verification required

Claude Fable 5.1 for verified organizations

How refusals and fallback work

Context window: 1Mtokens
Max output: 128Ktokens
Input pricing: $10/ MTok
Output pricing: $50/ MTok

Claude Mythos 5.1 is available only to organizations verified through Anthropic’s verification programs, such as the Cyber Verification Program. It has the same specifications and pricing as Claude Fable 5.1. To request access, apply to the program that covers your use case.

See Claude Fable 5.1

比較

Model	Context	Max output	Price / MTok	Latency	Thinking	Default effort	Knowledge cutoff
Claude Fable 5.1	1M	128K	$10 / $50	Slower	Adaptive (always on)	`high`	Jun 2026
Claude Mythos 5.1This model	1M	128K	$10 / $50	Slower	Adaptive (always on)	`high`	Jun 2026
Claude Opus 5.5	1M	128K	$4 / $20	Moderate	Adaptive (always on)	`medium`	Jun 2026
Claude Sonnet 5.5	1M	128K	$2 / $10	Fast	Adaptive	`high`	Jun 2026
Claude Haiku 5.5	1M	128K	From $0.10 / $0.50	Fastest	Adaptive	`medium`	Jun 2026

仕様

Model IDs

Claude API
Amazon Bedrock
Google Cloud
Microsoft Foundry

Pricing

Input: $10 / MTok
Output: $50 / MTok
5m cache write: $12.50 / MTok
1h cache write: $20 / MTok
Cache read: $0.25 / MTok
Batch API: 50% discount on input and output

Full price list

Capabilities

Context window: 1M tokens
Max output: 128K tokens
Thinking: Adaptive (always on)
Default effort: high
Comparative latency: Slower
Input → output: Text and images → text
Reliable knowledge cutoff: Jun 2026
Training data cutoff: Jun 2026

Availability

Status: Active (verification required)
Released: September 1, 2026
Retirement: Not sooner than September 1, 2027
Platforms: Claude APIAmazon Bedrock Google Cloud Microsoft Foundry

リファレンス

Claude Mythos 5 からの移行

Claude Mythos 5 から移行する際の変更点。

システムカード

Claude Fable 5.1 および Claude Mythos 5.1 の安全性評価とデプロイに関する決定。

バッチ割引やプロンプトキャッシングの料金を含む、完全な料金表。

モデルIDとバージョン管理

モデルID、エイリアス、固定スナップショットの仕組み。

モデルの非推奨

すべての Claude モデルのライフサイクルステータスと廃止に関するコミットメント。

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