Legacy. Released July 24, 2026.
Although Claude Opus 5 is still available, you should consider migrating to Claude Opus 5.5. See Claude Opus 5.5 · Migrate to Claude Opus 5.5
Model ID: claude-opus-5
Context window: 1M tokens · Max output: 128K tokens · Input pricing: $5 / MTok · Output pricing: $25 / MTok
与当前模型阵容的比较
| Model | Context | Max output | Price / MTok | Thinking | Default effort | Knowledge cutoff |
|---|---|---|---|---|---|---|
| Claude Fable 5.1 | 1M | 128K | $10 / $50 | Adaptive (always on) | high |
Jun 2026 |
| Claude Opus 5.5 | 1M | 128K | $4 / $20 | Adaptive (always on) | medium |
Jun 2026 |
| Claude Opus 5 (this model) | 1M | 128K | $5 / $25 | Adaptive | high |
May 2026 |
| Claude Sonnet 5.5 | 1M | 128K | $2 / $10 | Adaptive | high |
Jun 2026 |
| Claude Haiku 5.5 | 1M | 128K | From $0.10 / $0.50 | Adaptive | medium |
Jun 2026 |
- Context: 1M tokens is roughly 555k words or 2.5M Unicode characters on the current tokenizer (introduced with Claude Opus 4.7); models before it fit about 750k words in 1M tokens. 200k tokens is roughly 150k words.
- Max output: Synchronous Messages API limit. On the Message Batches API, Claude Opus 5.5, Claude Opus 5, Claude Sonnet 5.5, Claude Sonnet 5, Claude Haiku 5.5, Claude Opus 4.8, Claude Opus 4.7, Claude Opus 4.6, and Claude Sonnet 4.6 support up to 300k output tokens with the output-300k-2026-03-24 beta header.
- Price / MTok: Input / output, base price per million tokens. Batch API requests are 50% off; prompt caching reads cost 10% of the base input price (2.5% on Claude Fable 5.1 and Claude Mythos 5.1, 5% on Claude Opus 5.5 and Claude Sonnet 5.5). See Pricing for the full list.
- Thinking: Adaptive thinking lets the model decide how much to think, steered by effort. Extended thinking is the manual budget_tokens mode on earlier models.
- Default effort: The effort parameter’s default on the Claude API. Models without a value don’t support the parameter.
- Knowledge cutoff: Reliable knowledge cutoff: the date through which the model’s knowledge is most extensive and reliable.
规格
Model IDs
| Platform | Model ID |
|---|---|
| Claude API | claude-opus-5 |
| Amazon Bedrock | anthropic.claude-opus-5 |
| Claude Models on Google Cloud (Google managed) | claude-opus-5 |
| Microsoft Foundry | claude-opus-5 |
| Claude Platform on AWS | claude-opus-5 |
| Claude Models on Google Cloud (Anthropic managed) | claude-opus-5 |
Pricing
| Feature | Value |
|---|---|
| Input | $5 / MTok |
| Output | $25 / MTok |
| 5m cache write | $6.25 / MTok |
| 1h cache write | $10 / MTok |
| Cache read | $0.50 / MTok |
| Batch API | 50% discount on input and output |
Capabilities
| Feature | Value |
|---|---|
| Context window | 1M tokens |
| Max output | 128K tokens |
| Max output (Batch API, beta) | 300K tokens |
| Thinking | Adaptive |
| Default effort | high |
| Input → output | Text and images → text |
| Reliable knowledge cutoff | May 2026 |
| Training data cutoff | May 2026 |
Availability
| Feature | Value |
|---|---|
| Status | Active (legacy) |
| Released | July 24, 2026 |
| Retirement | Not sooner than July 24, 2027 |
| Platforms | Claude API, Amazon Bedrock, Claude Models on Google Cloud (Google managed), Microsoft Foundry, Claude Platform on AWS, Claude Models on Google Cloud (Anthropic managed) |
须知事项
- 在 Message Batches API 上，Claude Opus 5 通过
output-300k-2026-03-24beta 标头支持最多 300k 输出令牌。 - 可缓存提示的最小长度为 512 个令牌。请参阅提示缓存。
- 使用 Models API 以编程方式查询限制和功能。
资源
-
迁移到 Claude Opus 5.5：从 Claude Opus 5 迁移到 Claude Opus 5.5 时会发生哪些变化。
-
Claude Opus 5.5：当前的 Opus 模型：概述、规格和资源。
-
Claude Opus 5 提示指南：针对特定模型的提示指南。
参考
-
系统提示：Claude Opus 5 在 claude.ai 和 Claude 应用中使用的系统提示。
-
系统卡：Claude Opus 5 的安全评估和部署决策。
-
定价：完整价格列表，包括批处理折扣和提示缓存费率。
-
模型 ID 与版本管理：模型 ID、别名和固定快照的工作方式。
-
模型弃用：每个 Claude 模型的生命周期状态和退役承诺。