Model Comparison

GPT-4o vs Claude 3.5 Sonnet

Claude 3.5 Sonnet shows notably better performance in the majority of benchmarks. GPT-4o is 1.4x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

GPT-4o outperforms in 1 benchmarks (GPQA), while Claude 3.5 Sonnet is better at 2 benchmarks (MMLU, MMLU-Pro).

Claude 3.5 Sonnet shows notably better performance in the majority of benchmarks.

Thu Apr 16 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT-4o costs less

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

For output processing, GPT-4o ($10.00/1M tokens) is 1.5x cheaper than Claude 3.5 Sonnet ($15.00/1M 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
Thu Apr 16 2026 • llm-stats.com
OpenAI
GPT-4o
Input tokens$2.50
Output tokens$10.00
Best providerAzure
Anthropic
Claude 3.5 Sonnet
Input tokens$3.00
Output tokens$15.00
Best providerAWS Bedrock
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.

OpenAI
GPT-4o
Input128,000 tokens
Output16,384 tokens
Anthropic
Claude 3.5 Sonnet
Input200,000 tokens
Output200,000 tokens
Thu Apr 16 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

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

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

GPT-4o

Text
Images
Audio
Video

Claude 3.5 Sonnet

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.

GPT-4o

Proprietary

Closed source

Claude 3.5 Sonnet

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-4o was released on 2024-08-06, while Claude 3.5 Sonnet was released on 2024-06-21.

GPT-4o is 2 months newer than Claude 3.5 Sonnet.

GPT-4o

Aug 6, 2024

1.7 years ago

1mo newer
Claude 3.5 Sonnet

Jun 21, 2024

1.8 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

GPT-4o is available from Azure, OpenAI. Claude 3.5 Sonnet is available from Bedrock, Google.

GPT-4o

azure logo
Azure
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M
openai logo
OpenAI
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M

Claude 3.5 Sonnet

bedrock logo
AWS Bedrock
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
google logo
Google
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

OpenAI
Less expensive input tokens
Less expensive output tokens
Higher GPQA score (70.1% vs 59.4%)
Anthropic
Larger context window (200,000 tokens)
Higher MMLU score (90.4% vs 85.7%)
Higher MMLU-Pro score (76.1% vs 74.7%)
OpenAIGPT-4o
AnthropicClaude 3.5 Sonnet
Compare in Playground

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-4o
Anthropic
Claude 3.5 Sonnet

FAQ

Common questions about GPT-4o vs Claude 3.5 Sonnet

Claude 3.5 Sonnet shows notably better performance in the majority of benchmarks. GPT-4o is made by OpenAI and Claude 3.5 Sonnet is made by Anthropic. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
GPT-4o scores AI2D: 94.2%, DocVQA: 92.8%, ChartQA: 85.7%, MMLU: 85.7%, CharXiv-D: 85.3%. Claude 3.5 Sonnet scores GSM8k: 96.4%, BIG-Bench Hard: 93.1%, HumanEval: 92.0%, MGSM: 91.6%, MMLU: 90.4%.
GPT-4o is 1.2x cheaper for input tokens. GPT-4o costs $2.50/M input and $10.00/M output via azure. Claude 3.5 Sonnet costs $3.00/M input and $15.00/M output via bedrock.
GPT-4o supports 128K tokens and Claude 3.5 Sonnet supports 200K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include context window (128K vs 200K), input pricing ($2.50 vs $3.00/M). See the full comparison above for benchmark-by-benchmark results.
GPT-4o is developed by OpenAI and Claude 3.5 Sonnet is developed by Anthropic.