Claude 4.5 Sonnet (Reasoning)

Anthropic

ReasoningVision ModelProprietary

Analysis of Anthropic's Claude 4.5 Sonnet (Reasoning) and comparison to other AI models across key metrics including quality, price, performance (tokens per second & time to first token), context window & more.

Context

Release Date: Sep 29, 2025
Knowledge Cutoff: Jul 01, 2025
Window: 1M

PricingPer 1M tokens

Input: $3
Output: $15
Blended 3:1: $6

Capabilities

Speed: 49 t/s
Input
Output
Reasoning tokens

Latency

TTFT: 13.26 ms
500 token response: 23.56 s

Benchmarks

Reasoning: ●●○○○
Math: ●●●●○
Coding: ●●○○○
MMLU Pro: 87.5%
GPQA: 83.4%
HLE: 17.3%
SciCode: 44.7%
AIME: 88.0%
LiveCodeBench: 71.4%

Analysis of Anthropic's Claude 4.5 Sonnet (Reasoning) and comparison to other AI models across key metrics including quality, price, performance (tokens per second & time to first token), context window & more.