Claude 3.5 Sonnet vs GPT-4o Comparison

Comparing Claude 3.5 Sonnet and GPT-4o across benchmarks, pricing, and capabilities.

Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

11 benchmarks

Claude 3.5 Sonnet outperforms in 9 benchmarks (AI2D, ChartQA, DocVQA, MathVista, MMLU, MMLU-Pro, SWE-Bench Verified, TAU-bench Airline, TAU-bench Retail), while GPT-4o is better at 2 benchmarks (GPQA, MMMU).

Claude 3.5 Sonnet significantly outperforms across most benchmarks.

Sun Mar 22 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT-4o costs less

For input processing, Claude 3.5 Sonnet ($3.00/1M tokens) is 1.2x more expensive than GPT-4o ($2.50/1M tokens).

For output processing, Claude 3.5 Sonnet ($15.00/1M tokens) is 1.5x more expensive than GPT-4o ($10.00/1M tokens).

In conclusion, Claude 3.5 Sonnet is more expensive than GPT-4o.*

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

Lowest available price from all providers

Sun Mar 22 2026 • llm-stats.com

Claude 3.5 Sonnet

Input tokens$3.00

Output tokens$15.00

Best providerAnthropic

GPT-4o

Input tokens$2.50

Output tokens$10.00

Best providerAzure

Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude 3.5 Sonnet accepts 200,000 input tokens compared to GPT-4o's 128,000 tokens. Claude 3.5 Sonnet can generate longer responses up to 200,000 tokens, while GPT-4o is limited to 16,384 tokens.

Claude 3.5 Sonnet

Input200,000 tokens

Output200,000 tokens

GPT-4o

Input128,000 tokens

Output16,384 tokens

Sun Mar 22 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude 3.5 Sonnet and GPT-4o support multimodal inputs.

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

Claude 3.5 Sonnet

Text

Images

Audio

Video

GPT-4o

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 3.5 Sonnet

Proprietary

Closed source

GPT-4o

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3.5 Sonnet was released on 2024-10-22, while GPT-4o was released on 2024-08-06.

Claude 3.5 Sonnet is 3 months newer than GPT-4o.

Claude 3.5 Sonnet

Oct 22, 2024

1.4 years ago

2mo newer

GPT-4o

Aug 6, 2024

1.6 years ago

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 3.5 Sonnet is available from Anthropic, Bedrock, Google. GPT-4o is available from Azure, OpenAI. The availability of providers can affect quality of the model and reliability.