Frontier
Vision
Anthropic
Claude 4.5 Sonnet (thinking)
The latest Claude 4.5 Sonnet model from Anthropic with maximum reasoning enabled, 200k reasoning tokens in 1M context.
Model Specifications
Context window
1,000,000 tokens
Max output
200,000 tokens
Knowledge cutoff
July 2025
Multipart messages
No
Vision capabilities
Yes
Default Parameters
Temperature
0.3
Top P
1.0
Frequency penalty
0.0
Presence penalty
0.0
Supported Parameters
Temperature
SupportedControls randomness: Lower values make output more deterministic, higher values more creative.
Range: 0.0 - 1.0
Default: 0.3
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