Model Comparison

Gemini 3 Flash vs GPT-5.2 Pro

GPT-5.2 Pro shows notably better performance in the majority of benchmarks. Gemini 3 Flash is 51.3x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

Gemini 3 Flash outperforms in 1 benchmarks (Humanity's Last Exam), while GPT-5.2 Pro is better at 3 benchmarks (AIME 2025, ARC-AGI v2, GPQA).

GPT-5.2 Pro shows notably better performance in the majority of benchmarks.

Tue Apr 07 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 3 Flash costs less

For input processing, Gemini 3 Flash ($0.50/1M tokens) is 42.0x cheaper than GPT-5.2 Pro ($21.00/1M tokens).

For output processing, Gemini 3 Flash ($3.00/1M tokens) is 56.0x cheaper than GPT-5.2 Pro ($168.00/1M tokens).

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

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

Lowest available price from all providers
Tue Apr 07 2026 • llm-stats.com
Google
Gemini 3 Flash
Input tokens$0.50
Output tokens$3.00
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 Flash accepts 1,000,000 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 Flash is limited to 65,536 tokens.

Google
Gemini 3 Flash
Input1,000,000 tokens
Output65,536 tokens
OpenAI
GPT-5.2 Pro
Input400,000 tokens
Output128,000 tokens
Tue Apr 07 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 3 Flash and GPT-5.2 Pro support multimodal inputs.

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

Gemini 3 Flash

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 Flash

Proprietary

Closed source

GPT-5.2 Pro

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3 Flash was released on 2025-12-17, while GPT-5.2 Pro was released on 2025-12-11.

Gemini 3 Flash is 0 month newer than GPT-5.2 Pro.

Gemini 3 Flash

Dec 17, 2025

3 months ago

6d newer
GPT-5.2 Pro

Dec 11, 2025

3 months ago

Knowledge Cutoff

When training data ends

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

Gemini 3 Flash

Jan 2025

GPT-5.2 Pro

—

Provider Availability

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

Gemini 3 Flash

google logo
Google
Input Price:Input: $0.50/1MOutput Price:Output: $3.00/1M

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

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Key Takeaways

Google
Larger context window (1,000,000 tokens)
Less expensive input tokens
Less expensive output tokens
Higher Humanity's Last Exam score (43.5% vs 36.6%)
OpenAI
Higher AIME 2025 score (100.0% vs 99.7%)
Higher ARC-AGI v2 score (54.2% vs 33.6%)
Higher GPQA score (93.2% vs 90.4%)

Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 3 Flash
OpenAI
GPT-5.2 Pro

FAQ

Common questions about Gemini 3 Flash vs GPT-5.2 Pro

GPT-5.2 Pro shows notably better performance in the majority of benchmarks. Gemini 3 Flash 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.
Gemini 3 Flash scores Vending-Bench 2: 100.0%, AIME 2025: 99.7%, Global PIQA: 92.8%, MMMLU: 91.8%, GPQA: 90.4%. GPT-5.2 Pro scores AIME 2025: 100.0%, HMMT 2025: 100.0%, GPQA: 93.2%, ARC-AGI: 90.5%, BrowseComp: 77.9%.
Gemini 3 Flash is 42.0x cheaper for input tokens. Gemini 3 Flash costs $0.50/M input and $3.00/M output via google. GPT-5.2 Pro costs $21.00/M input and $168.00/M output via openai.
Gemini 3 Flash 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.
Key differences include context window (1.0M vs 400K), input pricing ($0.50 vs $21.00/M). See the full comparison above for benchmark-by-benchmark results.
Gemini 3 Flash is developed by Google and GPT-5.2 Pro is developed by OpenAI.