Model Comparison

Claude 3 Opus vs GPT-4o

GPT-4o significantly outperforms across most benchmarks. GPT-4o is 6.9x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

7 benchmarks

Claude 3 Opus outperforms in 1 benchmarks (MGSM), while GPT-4o is better at 6 benchmarks (DROP, GPQA, HumanEval, MATH, MMLU, MMLU-Pro).

GPT-4o significantly outperforms across most benchmarks.

Tue May 26 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 Opus ($15.00/1M tokens) is 6.0x more expensive than GPT-4o ($2.50/1M tokens).

For output processing, Claude 3 Opus ($75.00/1M tokens) is 7.5x more expensive than GPT-4o ($10.00/1M tokens).

In conclusion, Claude 3 Opus is more expensive than GPT-4o.*

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

Lowest available price from all providers
Tue May 26 2026 • llm-stats.com
Anthropic
Claude 3 Opus
Input tokens$15.00
Output tokens$75.00
Best providerAnthropic
OpenAI
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 Opus accepts 200,000 input tokens compared to GPT-4o's 128,000 tokens. Claude 3 Opus can generate longer responses up to 200,000 tokens, while GPT-4o is limited to 4,096 tokens.

Anthropic
Claude 3 Opus
Input200,000 tokens
Output200,000 tokens
OpenAI
GPT-4o
Input128,000 tokens
Output4,096 tokens
Tue May 26 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude 3 Opus and GPT-4o support multimodal inputs.

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

Claude 3 Opus

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 Opus

Proprietary

Closed source

GPT-4o

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3 Opus was released on 2024-02-29, while GPT-4o was released on 2024-05-13.

GPT-4o is 2 months newer than Claude 3 Opus.

Claude 3 Opus

Feb 29, 2024

2.2 years ago

GPT-4o

May 13, 2024

2.0 years ago

2mo 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 Opus is available from Anthropic, Bedrock, Google. GPT-4o is available from Azure, OpenAI.

Claude 3 Opus

anthropic logo
Anthropic
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
google logo
Google
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M

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
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Anthropic
Larger context window (200,000 tokens)
Higher MGSM score (90.7% vs 90.5%)
OpenAI
Less expensive input tokens
Less expensive output tokens
Higher DROP score (83.4% vs 83.1%)
Higher GPQA score (53.6% vs 50.4%)
Higher HumanEval score (90.2% vs 84.9%)
Higher MATH score (76.6% vs 60.1%)
Higher MMLU score (88.7% vs 86.8%)
Higher MMLU-Pro score (72.6% vs 68.5%)
AnthropicClaude 3 Opus
OpenAIGPT-4o
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Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude 3 Opus
OpenAI
GPT-4o

FAQ

Common questions about Claude 3 Opus vs GPT-4o.

Which is better, Claude 3 Opus or GPT-4o?

GPT-4o significantly outperforms across most benchmarks. Claude 3 Opus is made by Anthropic and GPT-4o is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude 3 Opus compare to GPT-4o in benchmarks?

Claude 3 Opus scores ARC-C: 96.4%, HellaSwag: 95.4%, GSM8k: 95.0%, MGSM: 90.7%, BIG-Bench Hard: 86.8%. GPT-4o scores MGSM: 90.5%, HumanEval: 90.2%, MMLU: 88.7%, DROP: 83.4%, MATH: 76.6%.

Is Claude 3 Opus cheaper than GPT-4o?

GPT-4o is 6.0x cheaper for input tokens. Claude 3 Opus costs $15.00/M input and $75.00/M output via anthropic. GPT-4o costs $2.50/M input and $10.00/M output via azure.

What are the context window sizes for Claude 3 Opus and GPT-4o?

Claude 3 Opus supports 200K tokens and GPT-4o supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude 3 Opus and GPT-4o?

Key differences include context window (200K vs 128K), input pricing ($15.00 vs $2.50/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude 3 Opus and GPT-4o?

Claude 3 Opus is developed by Anthropic and GPT-4o is developed by OpenAI.