Claude Opus 4.5
Legacy · availableAn Anthropic model with a 200K-token context window, image input and tool calling. On the Anthropic API since November 24, 2025.
Access details: Anthropic API
A pinned version. Requests to this ID always get the same model.
claude-opus-4-5-20251101Updated Sep 23, 2026
Capabilities & limits
- Context window
- 200K
- Maximum output
- 64K
- Image input
- Supported
- Tool calling
- Supported
- Structured output
- Supported
Pricing
USD / 1M tokens- Input
- $5.00
- Output
- $25.00
Standard rates per million tokens. Discounts and long-context rates, where offered, are on Anthropic's pricing page.
Full rate card 5 rates
All prices in USD.
Base input tokens
$5.00 per 1M tokens- Claude API global standard
Output tokens
$25.00 per 1M tokens- Claude API global standard
Cache hits and refreshes
$0.50 per 1M tokens- prompt caching
5 minute cache writes
$6.25 per 1M tokens- prompt caching
- 5 minute duration
1 hour cache writes
$10.00 per 1M tokens- prompt caching
- 1 hour duration
Price history
Sep 13, 2026
Input $5.00 per million tokens
Oct 20, 2026
Input $5.00 per million tokens
Sep 13, 2026
Output $25.00 per million tokens
Oct 20, 2026
Output $25.00 per million tokens
Technical details
- Parameters
- Not published
- Active parameters
- Not published
- Architecture
- Not published
- Training / knowledge cutoff
- Aug 2025
- Input modalities
- Text, image
- Output modalities
- Text
From Anthropic
Official announcement ↗Release & lifecycle
- First available
- Nov 24, 2025
- available
- As of Sep 13, 2026
- legacy
- As of Sep 23, 2026