Model Comparison

GPT-5 High vs Gemini 2.5 Pro

GPT-5 High significantly outperforms across most benchmarks. GPT-5 High and Gemini 2.5 Pro cost the same.

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Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

GPT-5 High outperforms in 2 benchmarks (AIME 2025, GPQA), while Gemini 2.5 Pro is better at 0 benchmarks.

GPT-5 High significantly outperforms across most benchmarks.

Thu Apr 16 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 2.5 Pro costs less

For input processing, GPT-5 High ($1.25/1M tokens) costs the same as Gemini 2.5 Pro ($1.25/1M tokens).

For output processing, GPT-5 High ($10.00/1M tokens) costs the same as Gemini 2.5 Pro ($10.00/1M tokens).

In conclusion, GPT-5 High and Gemini 2.5 Pro cost the same.*

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

Lowest available price from all providers
Thu Apr 16 2026 • llm-stats.com
OpenAI
GPT-5 High
Input tokens$1.25
Output tokens$10.00
Best providerOpenAI
Google
Gemini 2.5 Pro
Input tokens$1.25
Output tokens$10.00
Best providerGoogle
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Context Window

Maximum input and output token capacity

Gemini 2.5 Pro accepts 1,048,576 input tokens compared to GPT-5 High's 400,000 tokens. GPT-5 High can generate longer responses up to 128,000 tokens, while Gemini 2.5 Pro is limited to 65,536 tokens.

OpenAI
GPT-5 High
Input400,000 tokens
Output128,000 tokens
Google
Gemini 2.5 Pro
Input1,048,576 tokens
Output65,536 tokens
Thu Apr 16 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-5 High and Gemini 2.5 Pro support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

GPT-5 High

Text
Images
Audio
Video

Gemini 2.5 Pro

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

Gemini 2.5 Pro

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-5 High was released on 2025-08-07, while Gemini 2.5 Pro was released on 2025-05-20.

GPT-5 High is 3 months newer than Gemini 2.5 Pro.

GPT-5 High

Aug 7, 2025

8 months ago

2mo newer
Gemini 2.5 Pro

May 20, 2025

11 months ago

Knowledge Cutoff

When training data ends

GPT-5 High has a knowledge cutoff of 2024-09-30, while Gemini 2.5 Pro has a cutoff of 2025-01-31.

Gemini 2.5 Pro has more recent training data (up to 2025-01-31), making it potentially better informed about events through that date compared to GPT-5 High (2024-09-30).

GPT-5 High

Sep 2024

Gemini 2.5 Pro

Jan 2025

4 mo newer

Provider Availability

GPT-5 High is available from OpenAI. Gemini 2.5 Pro is available from Google.

GPT-5 High

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

Gemini 2.5 Pro

google logo
Google
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 AIME 2025 score (94.6% vs 83.0%)
Higher GPQA score (87.3% vs 83.0%)
Google
Larger context window (1,048,576 tokens)
OpenAIGPT-5 High
GoogleGemini 2.5 Pro
Compare in Playground

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-5 High
Google
Gemini 2.5 Pro

FAQ

Common questions about GPT-5 High vs Gemini 2.5 Pro

GPT-5 High significantly outperforms across most benchmarks. GPT-5 High is made by OpenAI and Gemini 2.5 Pro is made by Google. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
GPT-5 High scores AIME 2025: 94.6%, GPQA: 87.3%. Gemini 2.5 Pro scores MRCR: 93.0%, AIME 2024: 92.0%, Global-MMLU-Lite: 88.6%, Video-MME: 84.8%, AIME 2025: 83.0%.
Both models cost $1.25 per million input tokens.
GPT-5 High supports 400K tokens and Gemini 2.5 Pro supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include context window (400K vs 1.0M). See the full comparison above for benchmark-by-benchmark results.
GPT-5 High is developed by OpenAI and Gemini 2.5 Pro is developed by Google.