Back to Models
Anthropic: Claude Opus 4.8 (Fast)
Anthropictext9.4 / 10 Overall Rating
Claude Opus 4.8 (Fast) is Anthropic's flagship model variant optimized for higher output generation speed. It features a 1,000,000-token context window and a 128,000-token max output limit for complex analysis and large codebases. It provides identical intelligence to standard Opus 4.8 at double the API cost.
Context Window
1000K
Knowledge Cutoff
2025
Max Output
16K
License
Proprietary
Where it Excels (Pros)
- 1M token context window
- 128K max output token limit
- Faster output than standard Opus
- Top-tier coding and complex reasoning
Limitations (Cons)
- Expensive at $10 input $50 output
- 2x price of standard Opus
Benchmark Breakdown
Reasoning (MMLU)88%
Coding (HumanEval)86%
Mathematics (MATH)84%
Long-Context Retrieval95%
Pricing Matrix
Input cost / 1M tokens$10.00
Output cost / 1M tokens$50.00
Compare Anthropic: Claude Opus 4.8 (Fast) with other frontier models: