Claude 3.7 Sonnet vs GPT-4.5 Comparison

Comparing Claude 3.7 Sonnet and GPT-4.5 across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

8 benchmarks

Claude 3.7 Sonnet outperforms in 7 benchmarks (AIME 2024, GPQA, IFEval, MMMLU, SWE-Bench Verified, TAU-bench Airline, TAU-bench Retail), while GPT-4.5 is better at 1 benchmark (MMMU).

Claude 3.7 Sonnet significantly outperforms across most benchmarks.

Sat Mar 14 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Claude 3.7 Sonnet costs less

For input processing, Claude 3.7 Sonnet ($3.00/1M tokens) is 25.0x cheaper than GPT-4.5 ($75.00/1M tokens).

For output processing, Claude 3.7 Sonnet ($15.00/1M tokens) is 10.0x cheaper than GPT-4.5 ($150.00/1M tokens).

In conclusion, GPT-4.5 is more expensive than Claude 3.7 Sonnet.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Sat Mar 14 2026 • llm-stats.com

Claude 3.7 Sonnet

Input tokens$3.00

Output tokens$15.00

Best providerAnthropic

GPT-4.5

Input tokens$75.00

Output tokens$150.00

Best providerOpenAI

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Context Window

Maximum input and output token capacity

Claude 3.7 Sonnet accepts 200,000 input tokens compared to GPT-4.5's 128,000 tokens. Claude 3.7 Sonnet can generate longer responses up to 128,000 tokens, while GPT-4.5 is limited to 4,096 tokens.

Claude 3.7 Sonnet

Input200,000 tokens

Output128,000 tokens

GPT-4.5

Input128,000 tokens

Output4,096 tokens

Sat Mar 14 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude 3.7 Sonnet and GPT-4.5 support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Claude 3.7 Sonnet

Text

Images

Audio

Video

GPT-4.5

Text

Images

Audio

Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Claude 3.7 Sonnet

Proprietary

Closed source

GPT-4.5

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3.7 Sonnet was released on 2025-02-24, while GPT-4.5 was released on 2025-02-27.

GPT-4.5 is 0 month newer than Claude 3.7 Sonnet.

Claude 3.7 Sonnet

Feb 24, 2025

1.0 years ago

GPT-4.5

Feb 27, 2025

1.0 years ago

3d newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

Claude 3.7 Sonnet is available from Anthropic, Bedrock, Google. GPT-4.5 is available from OpenAI. The availability of providers can affect quality of the model and reliability.