Model Comparison

GPT-5 High vs o3-mini

GPT-5 High significantly outperforms across most benchmarks. o3-mini is 1.8x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

GPT-5 High outperforms in 1 benchmarks (GPQA), while o3-mini is better at 0 benchmarks.

GPT-5 High significantly outperforms across most benchmarks.

Tue May 12 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

o3-mini costs less

For input processing, GPT-5 High ($1.25/1M tokens) is 1.1x more expensive than o3-mini ($1.10/1M tokens).

For output processing, GPT-5 High ($10.00/1M tokens) is 2.3x more expensive than o3-mini ($4.40/1M tokens).

In conclusion, GPT-5 High is more expensive than o3-mini.*

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

Lowest available price from all providers
Tue May 12 2026 • llm-stats.com
OpenAI
GPT-5 High
Input tokens$1.25
Output tokens$10.00
Best providerOpenAI
OpenAI
o3-mini
Input tokens$1.10
Output tokens$4.40
Best providerAzure
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Context Window

Maximum input and output token capacity

GPT-5 High accepts 400,000 input tokens compared to o3-mini's 200,000 tokens. GPT-5 High can generate longer responses up to 128,000 tokens, while o3-mini is limited to 100,000 tokens.

OpenAI
GPT-5 High
Input400,000 tokens
Output128,000 tokens
OpenAI
o3-mini
Input200,000 tokens
Output100,000 tokens
Tue May 12 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-5 High supports multimodal inputs, whereas o3-mini does not.

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

GPT-5 High

Text
Images
Audio
Video

o3-mini

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-5 High

Proprietary

Closed source

o3-mini

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-5 High was released on 2025-08-07, while o3-mini was released on 2025-01-30.

GPT-5 High is 6 months newer than o3-mini.

GPT-5 High

Aug 7, 2025

9 months ago

6mo newer
o3-mini

Jan 30, 2025

1.3 years ago

Knowledge Cutoff

When training data ends

GPT-5 High has a knowledge cutoff of 2024-09-30, while o3-mini has a cutoff of 2023-09-30.

GPT-5 High has more recent training data (up to 2024-09-30), making it potentially better informed about events through that date compared to o3-mini (2023-09-30).

GPT-5 High

Sep 2024

1 yr newer
o3-mini

Sep 2023

Provider Availability

GPT-5 High is available from OpenAI. o3-mini is available from Azure, OpenAI.

GPT-5 High

openai logo
OpenAI
Input Price:Input: $1.25/1MOutput Price:Output: $10.00/1M

o3-mini

azure logo
Azure
Input Price:Input: $1.10/1MOutput Price:Output: $4.40/1M
openai logo
OpenAI
Input Price:Input: $1.10/1MOutput Price:Output: $4.40/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

OpenAI
Larger context window (400,000 tokens)
Supports multimodal inputs
Higher GPQA score (87.3% vs 77.2%)
OpenAI
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-5 High
OpenAI
o3-mini

FAQ

Common questions about GPT-5 High vs o3-mini.

Which is better, GPT-5 High or o3-mini?

GPT-5 High significantly outperforms across most benchmarks. GPT-5 High is made by OpenAI and o3-mini is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-5 High compare to o3-mini in benchmarks?

GPT-5 High scores AIME 2025: 94.6%, GPQA: 87.3%. o3-mini scores COLLIE: 98.7%, MATH: 97.9%, IFEval: 93.9%, MGSM: 92.0%, AIME 2024: 87.3%.

Is GPT-5 High cheaper than o3-mini?

o3-mini is 1.1x cheaper for input tokens. GPT-5 High costs $1.25/M input and $10.00/M output via openai. o3-mini costs $1.10/M input and $4.40/M output via azure.

What are the context window sizes for GPT-5 High and o3-mini?

GPT-5 High supports 400K tokens and o3-mini 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-5 High and o3-mini?

Key differences include context window (400K vs 200K), input pricing ($1.25 vs $1.10/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.