Model Comparison

Gemini 3 Pro vs GPT-5 nano

Gemini 3 Pro significantly outperforms across most benchmarks. GPT-5 nano is 32.7x cheaper per token.

Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Gemini 3 Pro outperforms in 3 benchmarks (AIME 2025, GPQA, Humanity's Last Exam), while GPT-5 nano is better at 0 benchmarks.

Gemini 3 Pro significantly outperforms across most benchmarks.

Wed May 13 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT-5 nano costs less

For input processing, Gemini 3 Pro ($2.00/1M tokens) is 40.0x more expensive than GPT-5 nano ($0.05/1M tokens).

For output processing, Gemini 3 Pro ($12.00/1M tokens) is 30.0x more expensive than GPT-5 nano ($0.40/1M tokens).

In conclusion, Gemini 3 Pro is more expensive than GPT-5 nano.*

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

Lowest available price from all providers
Wed May 13 2026 • llm-stats.com
Google
Gemini 3 Pro
Input tokens$2.00
Output tokens$12.00
Best providerGoogle
OpenAI
GPT-5 nano
Input tokens$0.05
Output tokens$0.40
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 3 Pro accepts 1,048,576 input tokens compared to GPT-5 nano's 400,000 tokens. GPT-5 nano can generate longer responses up to 128,000 tokens, while Gemini 3 Pro is limited to 65,536 tokens.

Google
Gemini 3 Pro
Input1,048,576 tokens
Output65,536 tokens
OpenAI
GPT-5 nano
Input400,000 tokens
Output128,000 tokens
Wed May 13 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 3 Pro and GPT-5 nano support multimodal inputs.

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

Gemini 3 Pro

Text
Images
Audio
Video

GPT-5 nano

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 3 Pro

Proprietary

Closed source

GPT-5 nano

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3 Pro was released on 2025-11-18, while GPT-5 nano was released on 2025-08-07.

Gemini 3 Pro is 3 months newer than GPT-5 nano.

Gemini 3 Pro

Nov 18, 2025

5 months ago

3mo newer
GPT-5 nano

Aug 7, 2025

9 months ago

Knowledge Cutoff

When training data ends

Gemini 3 Pro has a knowledge cutoff of 2025-01-31, while GPT-5 nano has a cutoff of 2024-05-30.

Gemini 3 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 nano (2024-05-30).

Gemini 3 Pro

Jan 2025

8 mo newer
GPT-5 nano

May 2024

Provider Availability

Gemini 3 Pro is available from Google. GPT-5 nano is available from OpenAI.

Gemini 3 Pro

google logo
Google
Input Price:Input: $2.00/1MOutput Price:Output: $12.00/1M

GPT-5 nano

openai logo
OpenAI
Input Price:Input: $0.05/1MOutput Price:Output: $0.40/1M
* 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)
Higher AIME 2025 score (100.0% vs 85.2%)
Higher GPQA score (91.9% vs 71.2%)
Higher Humanity's Last Exam score (45.8% vs 8.7%)
OpenAI
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 3 Pro
OpenAI
GPT-5 nano

FAQ

Common questions about Gemini 3 Pro vs GPT-5 nano.

Which is better, Gemini 3 Pro or GPT-5 nano?

Gemini 3 Pro significantly outperforms across most benchmarks. Gemini 3 Pro is made by Google and GPT-5 nano is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 3 Pro compare to GPT-5 nano in benchmarks?

Gemini 3 Pro scores AIME 2025: 100.0%, Vending-Bench 2: 100.0%, Global PIQA: 93.4%, GPQA: 91.9%, MMMLU: 91.8%. GPT-5 nano scores AIME 2025: 85.2%, HMMT 2025: 75.6%, GPQA: 71.2%, FrontierMath: 9.6%, Humanity's Last Exam: 8.7%.

Is Gemini 3 Pro cheaper than GPT-5 nano?

GPT-5 nano is 40.0x cheaper for input tokens. Gemini 3 Pro costs $2.00/M input and $12.00/M output via google. GPT-5 nano costs $0.05/M input and $0.40/M output via openai.

What are the context window sizes for Gemini 3 Pro and GPT-5 nano?

Gemini 3 Pro supports 1.0M tokens and GPT-5 nano 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 3 Pro and GPT-5 nano?

Key differences include context window (1.0M vs 400K), input pricing ($2.00 vs $0.05/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 3 Pro and GPT-5 nano?

Gemini 3 Pro is developed by Google and GPT-5 nano is developed by OpenAI.