DeepSeek V3.1 Terminus vs Claude 4.5 Sonnet (thinking)

Detailed comparison of capabilities, features, and performance.

Feature
DeepSeek V3.1 Terminus
Claude 4.5 Sonnet (thinking)
Model Image
DeepSeek V3.1 Terminus
Claude 4.5 Sonnet (thinking)
AI Lab
DeepSeek
Anthropic
Context Size
163,840 tokens
1,000,000 tokens
Max Output Size
32,000 tokens
64,000 tokens
Frontier Model
No
Yes
Vision Support
No
Yes
Description
A large hybrid reasoning model (671B parameters, 37B active) that supports both thinking and non-thinking modes. USA hosted, it improves tool use, code generation, and reasoning efficiency.
The latest Claude 4.5 Sonnet model from Anthropic with maximum reasoning enabled, 200k reasoning tokens in 1M context.

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