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Claude 4.5 Sonnet (Reasoning) – Benchmarks, Pricing & Intelligence Analysis

Not available on LLMBase

Claude 4.5 Sonnet (Reasoning) is not currently available in LLMBase Chat or the LLMBase Inference API. Benchmarks, pricing, and model details remain available for research and comparison.

Try Claude Fable 5 instead.

Use in Chat
Input Price$3.00/1M tokens
Output Price$15.00/1M tokens
Intelligence36.4
Coding52.1

Specifications

Technical details and pricing.

ProviderAnthropic
Context WindowN/A
Release DateSep 29, 2025
ModalitiesText
AvailabilityNot available

Benchmarks

10 benchmark scores from Artificial Analysis.

GPQA83.4%
MMLU Pro87.5%
HLE17.3%
LiveCodeBench71.4%
AIME 202588.0%
SciCode44.7%
LCR65.7%
IFBench57.3%
Tau278.1%
TerminalBench Hard35.6%

Composite Indices

Higher is better; speed and price are normalized

Standard Benchmarks

Only benchmarks with data are shown

Frequently Asked Questions

What is Claude 4.5 Sonnet (Reasoning) good for?

Claude 4.5 Sonnet (Reasoning) currently has benchmark and pricing data on this page. Runtime metadata will appear later when the model catalog entry becomes available.

How much does Claude 4.5 Sonnet (Reasoning) cost?

Pricing is based on usage. Current rates are $3.00/1M tokens for input and $15.00/1M tokens for output.

Is Claude 4.5 Sonnet (Reasoning) available in LLMBase Chat yet?

Not yet on this page. We will add chat and inference actions automatically once an exact catalog entry exists for Claude 4.5 Sonnet (Reasoning).

Does Claude 4.5 Sonnet (Reasoning) support images or audio?

Claude 4.5 Sonnet (Reasoning) focuses on text-based tasks.

Benchmarks and pricing use Artificial Analysis where available. Catalog specs are used as a fallback.