Model Comparison

GPT-4o mini vs o1-previewWhich is better in 2026?

o1-preview significantly outperforms across most benchmarks. GPT-4o mini is 100.0x cheaper per token.

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

GPT-4o mini (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-4o mini outperforms in 0 benchmarks, while o1-preview is better at 5 benchmarks (GPQA, MATH, MGSM, MMLU, SWE-Bench Verified). o1-preview significantly outperforms across most benchmarks.

On price, GPT-4o mini is roughly 100.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Choose GPT-4o mini if…

  • cost matters — it's about 100.0x cheaper per token

Choose o1-preview if…

  • you want the strongest raw capability — it leads on 5 of 5 shared benchmarks
  • you want the most recent training data — it shipped Sep 2024

Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

GPT-4o mini outperforms in 0 benchmarks, while o1-preview is better at 5 benchmarks (GPQA, MATH, MGSM, MMLU, SWE-Bench Verified).

o1-preview significantly outperforms across most benchmarks.

Sat Jul 04 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT-4o mini costs less

For input processing, GPT-4o mini ($0.15/1M tokens) is 100.0x cheaper than o1-preview ($15.00/1M tokens).

For output processing, GPT-4o mini ($0.60/1M tokens) is 100.0x cheaper than o1-preview ($60.00/1M tokens).

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

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

Lowest available price from all providers
Sat Jul 04 2026 • llm-stats.com
OpenAI
GPT-4o mini
Input tokens$0.15
Output tokens$0.60
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-4o mini is limited to 16,384 tokens.

OpenAI
GPT-4o mini
Input128,000 tokens
Output16,384 tokens
OpenAI
o1-preview
Input128,000 tokens
Output32,768 tokens
Sat Jul 04 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

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

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

GPT-4o mini

Text
Images
Audio
Video

o1-preview

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 mini

Proprietary

Closed source

o1-preview

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-4o mini was released on 2024-07-18, while o1-preview was released on 2024-09-12.

o1-preview is 2 months newer than GPT-4o mini.

GPT-4o mini

Jul 18, 2024

2.0 years ago

o1-preview

Sep 12, 2024

1.8 years ago

1mo newer

Knowledge Cutoff

When training data ends

GPT-4o mini has a documented knowledge cutoff of 2023-10-01, while o1-preview's cutoff date is not specified.

We can confirm GPT-4o mini's training data extends to 2023-10-01, but cannot make a direct comparison without o1-preview's cutoff date.

GPT-4o mini

Oct 2023

o1-preview

—

Provider Availability

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

GPT-4o mini

azure logo
Azure
Input Price:Input: $0.15/1MOutput Price:Output: $0.60/1M

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
Supports multimodal inputs
Less expensive input tokens
Less expensive output tokens
OpenAI
Higher GPQA score (73.3% vs 40.2%)
Higher MATH score (85.5% vs 70.2%)
Higher MGSM score (90.8% vs 87.0%)
Higher MMLU score (90.8% vs 82.0%)
Higher SWE-Bench Verified score (41.3% vs 8.7%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against GPT-4o mini and o1-preview side-by-side, then vote on the output you prefer.

GPT-4o mini
✓ Preferred
o1-preview
Open in Playground
AI Model Comparison Table
Feature
OpenAI
GPT-4o mini
OpenAI
o1-preview

FAQ

Common questions about GPT-4o mini vs o1-preview.

Which is better, GPT-4o mini or o1-preview?

o1-preview significantly outperforms across most benchmarks. GPT-4o mini 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-4o mini compare to o1-preview in benchmarks?

GPT-4o mini scores HumanEval: 87.2%, MGSM: 87.0%, MMLU: 82.0%, DROP: 79.7%, MATH: 70.2%. o1-preview scores MGSM: 90.8%, MMLU: 90.8%, MATH: 85.5%, GPQA: 73.3%, LiveBench: 52.3%.

Is GPT-4o mini cheaper than o1-preview?

GPT-4o mini is 100.0x cheaper for input tokens. GPT-4o mini costs $0.15/M input and $0.60/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-4o mini and o1-preview?

GPT-4o mini 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-4o mini and o1-preview?

Key differences include input pricing ($0.15 vs $15.00/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

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