Claude Opus 4.8
Anthropic's Claude Opus 4.8 is a chat model that excels at handling diverse inputs, including images, PDFs, and text, within a large context window of 1,000,000 tokens. It demonstrates exceptional performance across various benchmarks, with top 10% scores in Intelligence Index, Coding Index, GPQA, and HLE, showcasing its strength in these areas.
Input
Output
Context
1000K
Max Output
128K
Parameters
-
Technical Specifications
Model TypeChat
Context Window1,000,000 tokens
Max Output Tokens128,000 tokens
ParametersNot available
Release DateMay 28, 2026
Training CutoffJan 1, 2026
Licenseproprietary
Open SourceNo
Input Modalities
ImageText
Output Modalities
Text
Capabilities
Benchmarks
Artificial Analysis
45.7%
HLE
92.0%
GPQA
53.5%
SciCode
56.7
Coding
55.7
Intelligence
67.6
Speed (tok/s)
32.2
TTFA (s)
32.2
TTFT (s)
Resources & Links
proprietary, Proprietary - API access only
Related Tools
Data sourced from official provider APIs and documentation
Last updated: Jun 24, 2026
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