o1 vs Claude 4.5 Sonnet (thinking)
Detailed comparison of capabilities, features, and performance.
Feature
o1
Claude 4.5 Sonnet (thinking)
Model Image
AI Lab
OpenAI
Anthropic
Context Size
128,000 tokens
1,000,000 tokens
Max Output Size
100,000 tokens
200,000 tokens
Frontier Model
Yes
Yes
Vision Support
No
Yes
Description
o1 is OpenAI's new reasoning model for complex tasks that require broad general knowledge
The latest Claude 4.5 Sonnet model from Anthropic with maximum reasoning enabled, 200k reasoning tokens in 1M context.
Learn more about o1
View detailed specifications and capabilities
View model details →Learn more about Claude 4.5 Sonnet (thinking)
View detailed specifications and capabilities
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