Model Comparison

GPT-4o vs o3

o3 significantly outperforms across most benchmarks. o3 is 1.3x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

16 benchmarks

GPT-4o outperforms in 0 benchmarks, while o3 is better at 16 benchmarks (Aider-Polyglot, AIME 2024, CharXiv-R, COLLIE, ERQA, GPQA, Humanity's Last Exam, MathVista, MMMU, MMMU-Pro, Multi-Challenge, SWE-Bench Verified, Tau2 Airline, Tau2 Retail, Tau2 Telecom, VideoMMMU).

o3 significantly outperforms across most benchmarks.

Thu May 21 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

o3 costs less

For input processing, GPT-4o ($2.50/1M tokens) is 1.3x more expensive than o3 ($2.00/1M tokens).

For output processing, GPT-4o ($10.00/1M tokens) is 1.3x more expensive than o3 ($8.00/1M tokens).

In conclusion, GPT-4o is more expensive than o3.*

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

Lowest available price from all providers
Thu May 21 2026 • llm-stats.com
OpenAI
GPT-4o
Input tokens$2.50
Output tokens$10.00
Best providerAzure
OpenAI
o3
Input tokens$2.00
Output tokens$8.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

o3 accepts 200,000 input tokens compared to GPT-4o's 128,000 tokens. o3 can generate longer responses up to 100,000 tokens, while GPT-4o is limited to 16,384 tokens.

OpenAI
GPT-4o
Input128,000 tokens
Output16,384 tokens
OpenAI
o3
Input200,000 tokens
Output100,000 tokens
Thu May 21 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-4o and o3 support multimodal inputs.

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

GPT-4o

Text
Images
Audio
Video

o3

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

o3

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-4o was released on 2024-08-06, while o3 was released on 2025-04-16.

o3 is 8 months newer than GPT-4o.

GPT-4o

Aug 6, 2024

1.8 years ago

o3

Apr 16, 2025

1.1 years ago

8mo newer

Knowledge Cutoff

When training data ends

o3 has a documented knowledge cutoff of 2024-05-31, while GPT-4o's cutoff date is not specified.

We can confirm o3's training data extends to 2024-05-31, but cannot make a direct comparison without GPT-4o's cutoff date.

GPT-4o

—

o3

May 2024

Provider Availability

GPT-4o is available from Azure, OpenAI. o3 is available from OpenAI.

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

o3

openai logo
OpenAI
Input Price:Input: $2.00/1MOutput Price:Output: $8.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

OpenAI

No standout differentiators in the data we have for this pair.

OpenAI
Larger context window (200,000 tokens)
Less expensive input tokens
Less expensive output tokens
Higher Aider-Polyglot score (81.3% vs 30.7%)
Higher AIME 2024 score (91.6% vs 13.1%)
Higher CharXiv-R score (78.6% vs 58.8%)
Higher COLLIE score (98.4% vs 61.0%)
Higher ERQA score (64.0% vs 35.2%)
Higher GPQA score (83.3% vs 70.1%)
Higher Humanity's Last Exam score (14.7% vs 5.3%)
Higher MathVista score (86.8% vs 61.4%)
Higher MMMU score (82.9% vs 72.2%)
Higher MMMU-Pro score (76.4% vs 59.9%)
Higher Multi-Challenge score (60.4% vs 40.3%)
Higher SWE-Bench Verified score (69.1% vs 33.2%)
Higher Tau2 Airline score (64.8% vs 45.5%)
Higher Tau2 Retail score (80.2% vs 63.4%)
Higher Tau2 Telecom score (58.2% vs 23.5%)
Higher VideoMMMU score (83.3% vs 61.2%)
OpenAIGPT-4o
OpenAIo3
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Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-4o
OpenAI
o3

FAQ

Common questions about GPT-4o vs o3.

Which is better, GPT-4o or o3?

o3 significantly outperforms across most benchmarks. GPT-4o is made by OpenAI and o3 is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-4o compare to o3 in benchmarks?

GPT-4o scores AI2D: 94.2%, DocVQA: 92.8%, ChartQA: 85.7%, MMLU: 85.7%, CharXiv-D: 85.3%. o3 scores COLLIE: 98.4%, AIME 2024: 91.6%, ARC-AGI: 88.0%, MathVista: 86.8%, AIME 2025: 86.4%.

Is GPT-4o cheaper than o3?

o3 is 1.3x cheaper for input tokens. GPT-4o costs $2.50/M input and $10.00/M output via azure. o3 costs $2.00/M input and $8.00/M output via openai.

What are the context window sizes for GPT-4o and o3?

GPT-4o supports 128K tokens and o3 supports 200K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT-4o and o3?

Key differences include context window (128K vs 200K), input pricing ($2.50 vs $2.00/M). See the full comparison above for benchmark-by-benchmark results.