Model Comparison

o1 vs GPT-5

GPT-5 significantly outperforms across most benchmarks. GPT-5 is 7.6x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

7 benchmarks

o1 outperforms in 1 benchmarks (MATH), while GPT-5 is better at 6 benchmarks (FrontierMath, GPQA, HumanEval, MMLU, MMMU, SWE-Bench Verified).

GPT-5 significantly outperforms across most benchmarks.

Fri May 15 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT-5 costs less

For input processing, o1 ($15.00/1M tokens) is 12.0x more expensive than GPT-5 ($1.25/1M tokens).

For output processing, o1 ($60.00/1M tokens) is 6.0x more expensive than GPT-5 ($10.00/1M tokens).

In conclusion, o1 is more expensive than GPT-5.*

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

Lowest available price from all providers
Fri May 15 2026 • llm-stats.com
OpenAI
o1
Input tokens$15.00
Output tokens$60.00
Best providerAzure
OpenAI
GPT-5
Input tokens$1.25
Output tokens$10.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

GPT-5 accepts 400,000 input tokens compared to o1's 200,000 tokens. GPT-5 can generate longer responses up to 128,000 tokens, while o1 is limited to 100,000 tokens.

OpenAI
o1
Input200,000 tokens
Output100,000 tokens
OpenAI
GPT-5
Input400,000 tokens
Output128,000 tokens
Fri May 15 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-5 supports multimodal inputs, whereas o1 does not.

GPT-5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

o1

Text
Images
Audio
Video

GPT-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.

o1

Proprietary

Closed source

GPT-5

Proprietary

Closed source

Release Timeline

When each model was launched

o1 was released on 2024-12-17, while GPT-5 was released on 2025-08-07.

GPT-5 is 8 months newer than o1.

o1

Dec 17, 2024

1.4 years ago

GPT-5

Aug 7, 2025

9 months ago

7mo newer

Knowledge Cutoff

When training data ends

GPT-5 has a documented knowledge cutoff of 2024-09-30, while o1's cutoff date is not specified.

We can confirm GPT-5's training data extends to 2024-09-30, but cannot make a direct comparison without o1's cutoff date.

o1

—

GPT-5

Sep 2024

Provider Availability

o1 is available from Azure, OpenAI. GPT-5 is available from OpenAI.

o1

azure logo
Azure
Input Price:Input: $15.00/1MOutput Price:Output: $60.00/1M
openai logo
OpenAI
Input Price:Input: $15.00/1MOutput Price:Output: $60.00/1M

GPT-5

openai logo
OpenAI
Input Price:Input: $1.25/1MOutput Price:Output: $10.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

OpenAI
Higher MATH score (96.4% vs 84.7%)
OpenAI
Larger context window (400,000 tokens)
Supports multimodal inputs
Less expensive input tokens
Less expensive output tokens
Higher FrontierMath score (26.3% vs 5.5%)
Higher GPQA score (85.7% vs 78.0%)
Higher HumanEval score (93.4% vs 88.1%)
Higher MMLU score (92.5% vs 91.8%)
Higher MMMU score (84.2% vs 77.6%)
Higher SWE-Bench Verified score (74.9% vs 41.0%)

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
o1
OpenAI
GPT-5

FAQ

Common questions about o1 vs GPT-5.

Which is better, o1 or GPT-5?

GPT-5 significantly outperforms across most benchmarks. o1 is made by OpenAI and GPT-5 is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does o1 compare to GPT-5 in benchmarks?

o1 scores GSM8k: 97.1%, MATH: 96.4%, GPQA Physics: 92.8%, MMLU: 91.8%, MGSM: 89.3%. GPT-5 scores SWE-Lancer (IC-Diamond subset): 100.0%, COLLIE: 99.0%, Tau2 Telecom: 96.7%, OpenAI-MRCR: 2 needle 128k: 95.2%, AIME 2025: 94.6%.

Is o1 cheaper than GPT-5?

GPT-5 is 12.0x cheaper for input tokens. o1 costs $15.00/M input and $60.00/M output via azure. GPT-5 costs $1.25/M input and $10.00/M output via openai.

What are the context window sizes for o1 and GPT-5?

o1 supports 200K tokens and GPT-5 supports 400K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between o1 and GPT-5?

Key differences include context window (200K vs 400K), input pricing ($15.00 vs $1.25/M), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.