Claude 5.5 Opus
Anthropic
Claude 5.5 Opus is a large language model developed by Anthropic. It is designed for understanding and generating code and complex tasks.
Token pricing and context
- Input
- $4 USD / 1M tokens
- Cached input
- $0.2 USD / 1M tokens
- Output
- $20 USD / 1M tokens
- Context window
- 1000000
Benchmark results
MM1.0
Overall score: 92.5 · Scale 0–100 · Higher is better
- Reasoning: 100
- Coding: 97
- Chat: 100
- Long Context: 100
- Vibe: 90
- Accuracy: 100
- General Knowledge: 37.5
Evaluated: 2026-10-18
Record exact model version, reasoning setting, temperature, tools, and evaluation setup.
Hallucimeter 1.0
Overall score: 17 · Scale 0–100 · Lower is better
- Hallucinations: 17
Evaluated: 2026-10-18
Record exact model version, reasoning setting, temperature, tools, and evaluation setup.
Updated 2026-10-17. Read benchmark methodology.