AI Observatory / Model Radar
Anthropic / anthropic/claude-opus-4.6-fast
Anthropic: Claude Opus 4.6 (Fast)
Fast-mode variant of [Opus 4.6](/anthropic/claude-opus-4.6) - identical capabilities with higher output speed at premium 6x pricing. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode
1,000,000
Context
128,000
Max output
$30.00 / 1M
Prompt price
2026-04-07
Created
01 / Snapshot
Pricing, context, modalities, and parameters.
Model Radar detail pages stay neutral and operator-readable: core metadata first, then workflow fit.
| Provider | Anthropic | Input modalities | text, image |
|---|---|---|---|
| Output modalities | text | Prompt price | $30.00 / 1M |
| Completion price | $150.00 / 1M | Request price | N/A |
| Context length | 1,000,000 | Max completion tokens | 128,000 |
| Supported parameters | include_reasoning, max_tokens, reasoning, response_format, stop, structured_outputs, temperature, tool_choice, tools, top_p, verbosity | ||
Best for
anthropic/claude-opus-4.6-fast
Anthropic: Claude Opus 4.6 (Fast)
Fast-mode variant of [Opus 4.6](/anthropic/claude-opus-4.6) - identical capabilities with higher output speed at premium 6x pricing. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode
Cross-modal work
Long context
Coding workflows
new
vision
tool-capable
long-context
03 / Colophon
Routes and exits.
Each model page stays simple: overview, compare, related models, then back to the public hub.