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Gemini 3 Pro vs GPT-5.2 Pro

GPT-5.2 Pro has a slight edge in benchmark performance. Gemini 3 Pro is 12.8x cheaper per token.

Google · OpenAI · Updated for 2026

Which is better?

Gemini 3 Pro outperforms in 1 benchmarks (Humanity's Last Exam), while GPT-5.2 Pro is better at 2 benchmarks (ARC-AGI v2, GPQA). GPT-5.2 Pro has a slight edge in benchmark performance.

On price, Gemini 3 Pro is roughly 12.8x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 3 Pro also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Based on current benchmark, pricing, and model metadata for 2026.

Choose Gemini 3 Pro

  • cost matters — it's about 12.8x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window

Choose GPT-5.2 Pro

  • you want the strongest raw capability — it leads on 3 of 4 shared benchmarks
  • you want the most recent training data — it shipped Dec 2025

At a glance

The differences that matter most.

Gemini 3 Pro
Google
GPT-5.2 Pro
OpenAI
Benchmark wins
1 of 4
3 of 4
Input price
$2.00 / M
$21.00 / M
Output price
$12.00 / M
$168.00 / M
Context window
1,048,576
400,000
Released
Nov 2025
Dec 2025
License
Proprietary
Proprietary

Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

Gemini 3 Pro outperforms in 1 benchmarks (Humanity's Last Exam), while GPT-5.2 Pro is better at 2 benchmarks (ARC-AGI v2, GPQA).

GPT-5.2 Pro has a slight edge in benchmark performance.

Mon Aug 24 2026 • llm-stats.com

Arena Performance

Playground indexes and blind preference scores

Pricing Analysis

Price comparison per million tokens

Gemini 3 Pro costs less

For input processing, Gemini 3 Pro ($2.00/1M tokens) is 10.5x cheaper than GPT-5.2 Pro ($21.00/1M tokens).

For output processing, Gemini 3 Pro ($12.00/1M tokens) is 14.0x cheaper than GPT-5.2 Pro ($168.00/1M tokens).

In conclusion, GPT-5.2 Pro is more expensive than Gemini 3 Pro.*

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

Lowest available price from all providers
Mon Aug 24 2026 • llm-stats.com
Google
Gemini 3 Pro
Input tokens$2.00
Output tokens$12.00
Best providerGoogle
OpenAI
GPT-5.2 Pro
Input tokens$21.00
Output tokens$168.00
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-5.2 Pro's 400,000 tokens. GPT-5.2 Pro 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-5.2 Pro
Input400,000 tokens
Output128,000 tokens
Mon Aug 24 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 3 Pro and GPT-5.2 Pro 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-5.2 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.

Gemini 3 Pro

Proprietary

Closed source

GPT-5.2 Pro

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3 Pro was released on 2025-11-18, while GPT-5.2 Pro was released on 2025-12-11.

GPT-5.2 Pro is 1 month newer than Gemini 3 Pro.

Gemini 3 Pro

Nov 18, 2025

9 months ago

GPT-5.2 Pro

Dec 11, 2025

8 months ago

3w newer

Knowledge Cutoff

When training data ends

Gemini 3 Pro has a documented knowledge cutoff of 2025-01-31, while GPT-5.2 Pro's cutoff date is not specified.

We can confirm Gemini 3 Pro's training data extends to 2025-01-31, but cannot make a direct comparison without GPT-5.2 Pro's cutoff date.

Gemini 3 Pro

Jan 2025

GPT-5.2 Pro

—

Provider Availability

Gemini 3 Pro is available from Google. GPT-5.2 Pro is available from OpenAI.

Gemini 3 Pro

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

GPT-5.2 Pro

openai logo
OpenAI
Input Price:Input: $21.00/1MOutput Price:Output: $168.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Gemini 3 Pro and GPT-5.2 Pro side-by-side, then vote on the output you prefer.

Gemini 3 Pro
✓ Preferred
GPT-5.2 Pro
Open in Playground

FAQ

Common questions about Gemini 3 Pro vs GPT-5.2 Pro.

Which is better, Gemini 3 Pro or GPT-5.2 Pro?

GPT-5.2 Pro has a slight edge in benchmark performance. Gemini 3 Pro is made by Google and GPT-5.2 Pro 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-5.2 Pro 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-5.2 Pro scores AIME 2025: 100.0%, HMMT 2025: 100.0%, GPQA: 93.2%, ARC-AGI: 90.5%, BrowseComp: 77.9%.

Is Gemini 3 Pro cheaper than GPT-5.2 Pro?

Gemini 3 Pro is 10.5x cheaper for input tokens. Gemini 3 Pro costs $2.00/M input and $12.00/M output via google. GPT-5.2 Pro costs $21.00/M input and $168.00/M output via openai.

What are the context window sizes for Gemini 3 Pro and GPT-5.2 Pro?

Gemini 3 Pro supports 1.0M tokens and GPT-5.2 Pro 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-5.2 Pro?

Key differences include context window (1.0M vs 400K), input pricing ($2.00 vs $21.00/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 3 Pro and GPT-5.2 Pro?

Gemini 3 Pro is developed by Google and GPT-5.2 Pro is developed by OpenAI.

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