Gemini 2.5 Flash-Lite vs GPT-4o
Gemini 2.5 Flash-Lite and GPT-4o are closely matched at 10.4 and 11.5 on the LLM Stats Score. Gemini 2.5 Flash-Lite is 25.0x cheaper per token.
Google · OpenAI · Updated for 2026
Which is better?
Gemini 2.5 Flash-Lite and GPT-4o are closely matched on the overall LLM Stats Score at 10.4 and 11.5.
In the 1 individual benchmarks reported for both models, Gemini 2.5 Flash-Lite wins 1; this is a narrower head-to-head signal than the composite indexes.
On price, Gemini 2.5 Flash-Lite is roughly 25.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Gemini 2.5 Flash-Lite 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 LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Gemini 2.5 Flash-Lite
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
- cost matters — it's about 25.0x cheaper per token
- you process long inputs — it offers a 1,048,576 token context window
- you want the most recent training data — it shipped Jun 2025
- you need open weights you can self-host or fine-tune
Choose GPT-4o
- your work emphasizes coding — it leads those capability indexes
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
13 reported for Gemini 2.5 Flash-Lite · 8 for GPT-4o
Gemini 2.5 Flash-Lite outperforms in 1 benchmarks (GPQA), while GPT-4o is better at 0 benchmarks.
Gemini 2.5 Flash-Lite significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Gemini 2.5 Flash-Lite ($0.10/1M tokens) is 25.0x cheaper than GPT-4o ($2.50/1M tokens).
For output processing, Gemini 2.5 Flash-Lite ($0.40/1M tokens) is 25.0x cheaper than GPT-4o ($10.00/1M tokens).
In conclusion, GPT-4o 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-4o's 128,000 tokens. Gemini 2.5 Flash-Lite can generate longer responses up to 65,536 tokens, while GPT-4o is limited to 4,096 tokens.
Input capabilities
Documented input modalities across available providers
Both Gemini 2.5 Flash-Lite and GPT-4o support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Gemini 2.5 Flash-Lite
GPT-4o
License
Usage and distribution terms
Gemini 2.5 Flash-Lite is licensed under Creative Commons Attribution 4.0 License, while GPT-4o 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-4o was released on 2024-05-13.
Gemini 2.5 Flash-Lite is 13 months newer than GPT-4o.
Jun 17, 2025
1.3 years ago
1.1yr newerMay 13, 2024
2.4 years ago
Knowledge Cutoff
When training data ends
Gemini 2.5 Flash-Lite has a documented knowledge cutoff of 2025-01-01, while GPT-4o'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-4o's cutoff date.
Jan 2025
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Provider Availability
Gemini 2.5 Flash-Lite is available from Google. GPT-4o is available from Azure, OpenAI.
Gemini 2.5 Flash-Lite
GPT-4o
Outputs Comparison
Judge for yourself.
Run your own prompts against Gemini 2.5 Flash-Lite and GPT-4o side-by-side, then vote on the output you prefer.
FAQ
Common questions about Gemini 2.5 Flash-Lite vs GPT-4o.