Model Comparison

Gemini 2.5 Pro Preview 06-05 vs GPT-5.1

GPT-5.1 significantly outperforms across most benchmarks. Gemini 2.5 Pro Preview 06-05 and GPT-5.1 cost the same.

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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

Gemini 2.5 Pro Preview 06-05 outperforms in 0 benchmarks, while GPT-5.1 is better at 4 benchmarks (AIME 2025, GPQA, MMMU, SWE-Bench Verified).

GPT-5.1 significantly outperforms across most benchmarks.

Tue May 12 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

For input processing, Gemini 2.5 Pro Preview 06-05 ($1.25/1M tokens) costs the same as GPT-5.1 ($1.25/1M tokens).

For output processing, Gemini 2.5 Pro Preview 06-05 ($10.00/1M tokens) costs the same as GPT-5.1 ($10.00/1M tokens).

In conclusion, Gemini 2.5 Pro Preview 06-05 and GPT-5.1 cost the same.*

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

Lowest available price from all providers
Tue May 12 2026 • llm-stats.com
Google
Gemini 2.5 Pro Preview 06-05
Input tokens$1.25
Output tokens$10.00
Best providerGoogle
OpenAI
GPT-5.1
Input tokens$1.25
Output tokens$10.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 2.5 Pro Preview 06-05 accepts 1,048,576 input tokens compared to GPT-5.1's 400,000 tokens. GPT-5.1 can generate longer responses up to 128,000 tokens, while Gemini 2.5 Pro Preview 06-05 is limited to 65,535 tokens.

Google
Gemini 2.5 Pro Preview 06-05
Input1,048,576 tokens
Output65,535 tokens
OpenAI
GPT-5.1
Input400,000 tokens
Output128,000 tokens
Tue May 12 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 2.5 Pro Preview 06-05 and GPT-5.1 support multimodal inputs.

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

Gemini 2.5 Pro Preview 06-05

Text
Images
Audio
Video

GPT-5.1

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.

Gemini 2.5 Pro Preview 06-05

Proprietary

Closed source

GPT-5.1

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 2.5 Pro Preview 06-05 was released on 2025-06-05, while GPT-5.1 was released on 2025-11-13.

GPT-5.1 is 5 months newer than Gemini 2.5 Pro Preview 06-05.

Gemini 2.5 Pro Preview 06-05

Jun 5, 2025

11 months ago

GPT-5.1

Nov 13, 2025

6 months ago

5mo newer

Knowledge Cutoff

When training data ends

Gemini 2.5 Pro Preview 06-05 has a knowledge cutoff of 2025-01-31, while GPT-5.1 has a cutoff of 2024-09-30.

Gemini 2.5 Pro Preview 06-05 has more recent training data (up to 2025-01-31), making it potentially better informed about events through that date compared to GPT-5.1 (2024-09-30).

Gemini 2.5 Pro Preview 06-05

Jan 2025

4 mo newer
GPT-5.1

Sep 2024

Provider Availability

Gemini 2.5 Pro Preview 06-05 is available from Google. GPT-5.1 is available from OpenAI.

Gemini 2.5 Pro Preview 06-05

google logo
Google
Input Price:Input: $1.25/1MOutput Price:Output: $10.00/1M

GPT-5.1

openai logo
OpenAI
Input Price:Input: $1.25/1MOutput Price:Output: $10.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Google
Larger context window (1,048,576 tokens)
OpenAI
Higher AIME 2025 score (94.0% vs 88.0%)
Higher GPQA score (88.1% vs 86.4%)
Higher MMMU score (85.4% vs 82.0%)
Higher SWE-Bench Verified score (76.3% vs 67.2%)

Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 2.5 Pro Preview 06-05
OpenAI
GPT-5.1

FAQ

Common questions about Gemini 2.5 Pro Preview 06-05 vs GPT-5.1.

Which is better, Gemini 2.5 Pro Preview 06-05 or GPT-5.1?

GPT-5.1 significantly outperforms across most benchmarks. Gemini 2.5 Pro Preview 06-05 is made by Google and GPT-5.1 is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 2.5 Pro Preview 06-05 compare to GPT-5.1 in benchmarks?

Gemini 2.5 Pro Preview 06-05 scores Global-MMLU-Lite: 89.2%, AIME 2025: 88.0%, FACTS Grounding: 87.8%, GPQA: 86.4%, VideoMMMU: 83.6%. GPT-5.1 scores Tau2 Telecom: 95.6%, AIME 2025: 94.0%, BrowseComp Long Context 128k: 90.0%, GPQA: 88.1%, MMMU: 85.4%.

Is Gemini 2.5 Pro Preview 06-05 cheaper than GPT-5.1?

Both models cost $1.25 per million input tokens.

What are the context window sizes for Gemini 2.5 Pro Preview 06-05 and GPT-5.1?

Gemini 2.5 Pro Preview 06-05 supports 1.0M tokens and GPT-5.1 supports 400K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 2.5 Pro Preview 06-05 and GPT-5.1?

Key differences include context window (1.0M vs 400K). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 2.5 Pro Preview 06-05 and GPT-5.1?

Gemini 2.5 Pro Preview 06-05 is developed by Google and GPT-5.1 is developed by OpenAI.