GPT-5.2 vs Gemini 3.1 Flash-Lite Comparison
Comparing GPT-5.2 and Gemini 3.1 Flash-Lite across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
GPT-5.2 outperforms in 6 benchmarks (CharXiv-R, GPQA, Humanity's Last Exam, MMMLU, MMMU-Pro, VideoMMMU), while Gemini 3.1 Flash-Lite is better at 0 benchmarks.
GPT-5.2 significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, GPT-5.2 ($1.75/1M tokens) is 7.0x more expensive than Gemini 3.1 Flash-Lite ($0.25/1M tokens).
For output processing, GPT-5.2 ($14.00/1M tokens) is 9.3x more expensive than Gemini 3.1 Flash-Lite ($1.50/1M tokens).
In conclusion, GPT-5.2 is more expensive than Gemini 3.1 Flash-Lite.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Gemini 3.1 Flash-Lite accepts 1,000,000 input tokens compared to GPT-5.2's 400,000 tokens. GPT-5.2 can generate longer responses up to 128,000 tokens, while Gemini 3.1 Flash-Lite is limited to 65,536 tokens.
Input Capabilities
Supported data types and modalities
Both GPT-5.2 and Gemini 3.1 Flash-Lite support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
GPT-5.2
Gemini 3.1 Flash-Lite
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
GPT-5.2 was released on 2025-12-11, while Gemini 3.1 Flash-Lite was released on 2026-03-03.
Gemini 3.1 Flash-Lite is 3 months newer than GPT-5.2.
Dec 11, 2025
3 months ago
Mar 3, 2026
2 weeks ago
2mo newerKnowledge Cutoff
When training data ends
GPT-5.2 has a knowledge cutoff of 2025-08-25, while Gemini 3.1 Flash-Lite has a cutoff of 2025-01-31.
GPT-5.2 has more recent training data (up to 2025-08-25), making it potentially better informed about events through that date compared to Gemini 3.1 Flash-Lite (2025-01-31).
Aug 2025
7 mo newerJan 2025
Provider Availability
GPT-5.2 is available from OpenAI. Gemini 3.1 Flash-Lite is available from Google. The availability of providers can affect quality of the model and reliability.
GPT-5.2
Gemini 3.1 Flash-Lite
Outputs Comparison
Key Takeaways
GPT-5.2
View detailsOpenAI
Detailed Comparison
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