About
Fast-mode variant of [Opus 4.8](/anthropic/claude-opus-4.8) - identical capabilities with higher output speed at 2x pricing relative to regular Opus 4.8. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode
Related Models
Anthropic: Claude Opus 4.82026-05-27Anthropic: Claude Opus 4.7 (Fast)2026-05-12Anthropic: Claude Opus 4.72026-04-16Claude Opus 4.7 (Non-reasoning, High Effort)2026-04-16Anthropic: Claude Opus 4.6 (Fast)2026-04-07Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort)2026-02-17Anthropic: Claude Sonnet 4.62026-02-17Claude Sonnet 4.6 (Non-reasoning, Low Effort)2026-02-17
Pricing
Input
$10.00
per 1M tokens
Output
$50.00
per 1M tokens
Blended
$20.00
per 1M tokens
Cheaper than 3% of models. Median price is $0.54/1M tokens.
Cost Calculator
Tokens per day1M
100K100M
Daily
$20.00
Monthly
$600.00
vs. Similar Models
OpenAI: o3 Deep Research
$17.50-13%
OpenAI: GPT-4 Turbo
$15.00-25%
OpenAI: GPT-4 Turbo (older v1106)
$15.00-25%
OpenAI: GPT-4 Turbo Preview
$15.00-25%
Performance
Context Window
1.0M
tokens
Larger than 82% of models
Max Output
128K
tokens
13% of context
Context Window Comparison
Anthropic: Claude Opus 4.8
1.0MSame
Anthropic: Claude Opus 4.7
1.0MSame
Qwen: Qwen3.7 Max
1.0MSame