Gemini 2.5 Flash-Lite vs GPT-5.2 Codex Comparison
Comparing Gemini 2.5 Flash-Lite and GPT-5.2 Codex across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
Gemini 2.5 Flash-Lite and GPT-5.2 Codex don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, Gemini 2.5 Flash-Lite ($0.10/1M tokens) is 17.5x cheaper than GPT-5.2 Codex ($1.75/1M tokens).
For output processing, Gemini 2.5 Flash-Lite ($0.40/1M tokens) is 35.0x cheaper than GPT-5.2 Codex ($14.00/1M tokens).
In conclusion, GPT-5.2 Codex is more expensive than Gemini 2.5 Flash-Lite.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Gemini 2.5 Flash-Lite accepts 1,048,576 input tokens compared to GPT-5.2 Codex's 400,000 tokens. GPT-5.2 Codex can generate longer responses up to 128,000 tokens, while Gemini 2.5 Flash-Lite is limited to 65,536 tokens.
Input Capabilities
Supported data types and modalities
Both Gemini 2.5 Flash-Lite and GPT-5.2 Codex support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Gemini 2.5 Flash-Lite
GPT-5.2 Codex
License
Usage and distribution terms
Gemini 2.5 Flash-Lite is licensed under Creative Commons Attribution 4.0 License, while GPT-5.2 Codex uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
Creative Commons Attribution 4.0 License
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
Gemini 2.5 Flash-Lite was released on 2025-06-17, while GPT-5.2 Codex was released on 2026-01-14.
GPT-5.2 Codex is 7 months newer than Gemini 2.5 Flash-Lite.
Jun 17, 2025
9 months ago
Jan 14, 2026
2 months ago
7mo newerKnowledge Cutoff
When training data ends
Gemini 2.5 Flash-Lite has a documented knowledge cutoff of 2025-01-01, while GPT-5.2 Codex's cutoff date is not specified.
We can confirm Gemini 2.5 Flash-Lite's training data extends to 2025-01-01, but cannot make a direct comparison without GPT-5.2 Codex's cutoff date.
Jan 2025
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Provider Availability
Gemini 2.5 Flash-Lite is available from Google. GPT-5.2 Codex is available from OpenAI. The availability of providers can affect quality of the model and reliability.
Gemini 2.5 Flash-Lite
GPT-5.2 Codex
Outputs Comparison
Key Takeaways
Detailed Comparison
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