gpt-oss-120b vs Claude 4.5 Sonnet
Detailed comparison of capabilities, features, and performance.
Feature
gpt-oss-120b
Claude 4.5 Sonnet
Model Image
AI Lab
OpenAI
Anthropic
Context Size
128,000 tokens
1,000,000 tokens
Max Output Size
16,384 tokens
64,000 tokens
Frontier Model
No
Yes
Vision Support
No
Yes
Description
OpenAI's open-weight model for powerful reasoning and agentic tasks.
The latest Claude 4.5 Sonnet model from Anthropic with a 1M token context window.
Learn more about gpt-oss-120b
View detailed specifications and capabilities
View model details →Learn more about Claude 4.5 Sonnet
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