Claude Opus 5 Fast is Claude Opus 5 run in Anthropic's fast mode, the same model weights with a faster inference configuration that raises output speed by up to 2.5x. Capabilities are unchanged: text and image input, text output, a 1M-token context window and adaptive thinking for coding, knowledge work and research.
Modalities
In / out price
$10.00 / $50.00per 1M
Cached price
$1.00per 1M
Context
1M
Max output
128K
Providers
1 routeCompare providers by price, privacy, and speed.
| Anonymous | $10.00 | $50.00 | $1.00 | 1M | 128K | — | — |
Privacy
1 / 4Anonymous routing
Anonymous tier
- Anonymous
- Private
- TEE
- E2EE
Your identity is hidden from the inference provider. The inference provider can see prompt content; zero retention is not guaranteed. Learn more
Features
8Streaming
Tool calling
Reasoning
Vision
JSON/schema
Web search
Code optimized
Prompt caching
Uptime
FAQ
Common questions about Claude Opus 5 Fast.