Model Comparison

o1 vs GPT-4Which is better in 2026?

o1 significantly outperforms across most benchmarks. o1 is 1.4x cheaper per token.

Verdict: o1 vs GPT-4 — which is better?

o1 (by OpenAI) and GPT-4 (by OpenAI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

o1 outperforms in 5 benchmarks (GPQA, HumanEval, MATH, MGSM, MMLU), while GPT-4 is better at 0 benchmarks. o1 significantly outperforms across most benchmarks.

On price, o1 is roughly 1.4x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

o1 also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose o1 if…

  • you want the strongest raw capability — it leads on 5 of 5 shared benchmarks
  • cost matters — it's about 1.4x cheaper per token
  • you process long inputs — it offers a 200,000 token context window
  • you want the most recent training data — it shipped Dec 2024

Choose GPT-4 if…

  • you want predictable pricing at $30.00/M input and $60.00/M output
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Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

o1 outperforms in 5 benchmarks (GPQA, HumanEval, MATH, MGSM, MMLU), while GPT-4 is better at 0 benchmarks.

o1 significantly outperforms across most benchmarks.

Sun Jun 07 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

o1 costs less

For input processing, o1 ($15.00/1M tokens) is 2.0x cheaper than GPT-4 ($30.00/1M tokens).

For output processing, o1 ($60.00/1M tokens) costs the same as GPT-4 ($60.00/1M tokens).

In conclusion, GPT-4 is more expensive than o1.*

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

Lowest available price from all providers
Sun Jun 07 2026 • llm-stats.com
OpenAI
o1
Input tokens$15.00
Output tokens$60.00
Best providerAzure
OpenAI
GPT-4
Input tokens$30.00
Output tokens$60.00
Best providerAzure
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

o1 accepts 200,000 input tokens compared to GPT-4's 32,768 tokens. o1 can generate longer responses up to 100,000 tokens, while GPT-4 is limited to 32,768 tokens.

OpenAI
o1
Input200,000 tokens
Output100,000 tokens
OpenAI
GPT-4
Input32,768 tokens
Output32,768 tokens
Sun Jun 07 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-4 supports multimodal inputs, whereas o1 does not.

GPT-4 can handle both text and other forms of data like images, making it suitable for multimodal applications.

o1

Text
Images
Audio
Video

GPT-4

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-4

Proprietary

Closed source

Release Timeline

When each model was launched

o1 was released on 2024-12-17, while GPT-4 was released on 2023-06-13.

o1 is 18 months newer than GPT-4.

o1

Dec 17, 2024

1.5 years ago

1.5yr newer
GPT-4

Jun 13, 2023

3.0 years ago

Knowledge Cutoff

When training data ends

GPT-4 has a documented knowledge cutoff of 2022-12-31, while o1's cutoff date is not specified.

We can confirm GPT-4's training data extends to 2022-12-31, but cannot make a direct comparison without o1's cutoff date.

o1

—

GPT-4

Dec 2022

Provider Availability

o1 is available from Azure, OpenAI. GPT-4 is available from Azure, 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-4

azure logo
Azure
Input Price:Input: $30.00/1MOutput Price:Output: $60.00/1M
openai logo
OpenAI
Input Price:Input: $30.00/1MOutput Price:Output: $60.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Larger context window (200,000 tokens)
Less expensive input tokens
Higher GPQA score (78.0% vs 35.7%)
Higher HumanEval score (88.1% vs 67.0%)
Higher MATH score (96.4% vs 42.0%)
Higher MGSM score (89.3% vs 74.5%)
Higher MMLU score (91.8% vs 86.4%)
OpenAI
Supports multimodal inputs

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
o1
OpenAI
GPT-4

FAQ

Common questions about o1 vs GPT-4.

Which is better, o1 or GPT-4?

o1 significantly outperforms across most benchmarks. o1 is made by OpenAI and GPT-4 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-4 in benchmarks?

o1 scores GSM8k: 97.1%, MATH: 96.4%, GPQA Physics: 92.8%, MMLU: 91.8%, MGSM: 89.3%. GPT-4 scores AI2 Reasoning Challenge (ARC): 96.3%, HellaSwag: 95.3%, Uniform Bar Exam: 90.0%, SAT Math: 89.0%, LSAT: 88.0%.

Is o1 cheaper than GPT-4?

o1 is 2.0x cheaper for input tokens. o1 costs $15.00/M input and $60.00/M output via azure. GPT-4 costs $30.00/M input and $60.00/M output via azure.

What are the context window sizes for o1 and GPT-4?

o1 supports 200K tokens and GPT-4 supports 33K 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-4?

Key differences include context window (200K vs 33K), input pricing ($15.00 vs $30.00/M), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.

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