Anthropic
Available in Shortly AI
Claude Opus 5.5
Released September 22, 2026
ReasoningVision (Image)Tool Use
Claude Opus 5.5 is a step-change improvement over Opus 5 for agentic coding, long-running agentic tasks, knowledge work, communication, and vision. It is more token-efficient per completed task and reports progress, findings, and next steps in clear language.
- Context window
- 1M tokens
- Maximum output
- 128K tokens
- Input pricing
- $4.00/M
- Output pricing
- $20.00/M
Independent benchmark
LiveBench performance
85.1overall
Benchmark data from LiveBench 2.0, release 2026-10-25.
72.8
92.2
96.3
88.4
80.3
85.0
86.9
| Category | Score |
|---|---|
| Long Agentic | 72.800 |
| Reasoning | 92.200 |
| Coding | 96.300 |
| Browser Use | 88.400 |
| Data Analysis | 80.300 |
| Research | 85.000 |
| Design | 86.900 |
Benchmarks measure selected evaluation tasks and do not guarantee performance for every prompt or workflow.
FAQ
Similar AI models
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