gpt-oss-120b vs Claude 4.5 Sonnet (thinking)
Detailed comparison of capabilities, features, and performance.
Feature
gpt-oss-120b
Claude 4.5 Sonnet (thinking)
Model Image
AI Lab
OpenAI
Anthropic
Context Size
128,000 tokens
1,000,000 tokens
Max Output Size
16,384 tokens
200,000 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 maximum reasoning enabled, 200k reasoning tokens in 1M context.
Learn more about gpt-oss-120b
View detailed specifications and capabilities
View model details →Learn more about Claude 4.5 Sonnet (thinking)
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