Model Comparison

GPT-4 Turbo vs o1-previewWhich is better in 2026?

o1-preview significantly outperforms across most benchmarks. GPT-4 Turbo is 1.8x cheaper per token.

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

GPT-4 Turbo (by OpenAI) and o1-preview (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.

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

On price, GPT-4 Turbo is roughly 1.8x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Choose GPT-4 Turbo if…

  • cost matters — it's about 1.8x cheaper per token

Choose o1-preview if…

  • you want the strongest raw capability — it leads on 4 of 4 shared benchmarks
  • you want the most recent training data — it shipped Sep 2024
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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

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

o1-preview significantly outperforms across most benchmarks.

Sun Jun 07 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT-4 Turbo costs less

For input processing, GPT-4 Turbo ($10.00/1M tokens) is 1.5x cheaper than o1-preview ($15.00/1M tokens).

For output processing, GPT-4 Turbo ($30.00/1M tokens) is 2.0x cheaper than o1-preview ($60.00/1M tokens).

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

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

Lowest available price from all providers
Sun Jun 07 2026 • llm-stats.com
OpenAI
GPT-4 Turbo
Input tokens$10.00
Output tokens$30.00
Best providerAzure
OpenAI
o1-preview
Input tokens$15.00
Output tokens$60.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Both models have the same input context window of 128,000 tokens. o1-preview can generate longer responses up to 32,768 tokens, while GPT-4 Turbo is limited to 4,096 tokens.

OpenAI
GPT-4 Turbo
Input128,000 tokens
Output4,096 tokens
OpenAI
o1-preview
Input128,000 tokens
Output32,768 tokens
Sun Jun 07 2026 • llm-stats.com

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

GPT-4 Turbo

Proprietary

Closed source

o1-preview

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-4 Turbo was released on 2024-04-09, while o1-preview was released on 2024-09-12.

o1-preview is 5 months newer than GPT-4 Turbo.

GPT-4 Turbo

Apr 9, 2024

2.2 years ago

o1-preview

Sep 12, 2024

1.7 years ago

5mo newer

Knowledge Cutoff

When training data ends

GPT-4 Turbo has a documented knowledge cutoff of 2023-12-31, while o1-preview's cutoff date is not specified.

We can confirm GPT-4 Turbo's training data extends to 2023-12-31, but cannot make a direct comparison without o1-preview's cutoff date.

GPT-4 Turbo

Dec 2023

o1-preview

—

Provider Availability

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

GPT-4 Turbo

azure logo
Azure
Input Price:Input: $10.00/1MOutput Price:Output: $30.00/1M
openai logo
OpenAI
Input Price:Input: $10.00/1MOutput Price:Output: $30.00/1M

o1-preview

openai logo
OpenAI
Input Price:Input: $15.00/1MOutput Price:Output: $60.00/1M
azure logo
Azure
Input Price:Input: $16.50/1MOutput Price:Output: $66.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Less expensive input tokens
Less expensive output tokens
OpenAI
Higher GPQA score (73.3% vs 48.0%)
Higher MATH score (85.5% vs 72.6%)
Higher MGSM score (90.8% vs 88.5%)
Higher MMLU score (90.8% vs 86.5%)

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-4 Turbo
OpenAI
o1-preview

FAQ

Common questions about GPT-4 Turbo vs o1-preview.

Which is better, GPT-4 Turbo or o1-preview?

o1-preview significantly outperforms across most benchmarks. GPT-4 Turbo is made by OpenAI and o1-preview is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-4 Turbo compare to o1-preview in benchmarks?

GPT-4 Turbo scores MGSM: 88.5%, HumanEval: 87.1%, MMLU: 86.5%, DROP: 86.0%, MATH: 72.6%. o1-preview scores MGSM: 90.8%, MMLU: 90.8%, MATH: 85.5%, GPQA: 73.3%, LiveBench: 52.3%.

Is GPT-4 Turbo cheaper than o1-preview?

GPT-4 Turbo is 1.5x cheaper for input tokens. GPT-4 Turbo costs $10.00/M input and $30.00/M output via azure. o1-preview costs $15.00/M input and $60.00/M output via openai.

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

GPT-4 Turbo supports 128K tokens and o1-preview 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 GPT-4 Turbo and o1-preview?

Key differences include input pricing ($10.00 vs $15.00/M). See the full comparison above for benchmark-by-benchmark results.

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