Gemini 2.0 Flash Thinking vs o3-mini
Gemini 2.0 Flash Thinking and o3-mini are closely matched at 17.1 and 21.6 on the LLM Stats Score.
Google · OpenAI · Updated for 2026
Which is better?
Gemini 2.0 Flash Thinking and o3-mini are closely matched on the overall LLM Stats Score at 17.1 and 21.6.
In the 2 individual benchmarks reported for both models, o3-mini wins 2; this is a narrower head-to-head signal than the composite indexes.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Gemini 2.0 Flash Thinking
- you are already invested in the Google ecosystem
Choose o3-mini
- you value its reported benchmark strengths — it wins 2 of 2 exact shared results
- you want the most recent training data — it shipped Jan 2025
At a glance
The differences that matter most.
Individual benchmarks
3 reported for Gemini 2.0 Flash Thinking · 25 for o3-mini
Gemini 2.0 Flash Thinking outperforms in 0 benchmarks, while o3-mini is better at 2 benchmarks (AIME 2024, GPQA).
o3-mini significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Context Window
Maximum input and output token capacity
Only o3-mini specifies input context (200,000 tokens). Only o3-mini specifies output context (100,000 tokens).
Input capabilities
Documented input modalities across available providers
Gemini 2.0 Flash Thinking supports multimodal inputs, whereas o3-mini does not.
Gemini 2.0 Flash Thinking can handle both text and other forms of data like images, making it suitable for multimodal applications.
Gemini 2.0 Flash Thinking
o3-mini
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
Gemini 2.0 Flash Thinking was released on 2025-01-21, while o3-mini was released on 2025-01-30.
o3-mini is 0 month newer than Gemini 2.0 Flash Thinking.
Jan 21, 2025
1.6 years ago
Jan 30, 2025
1.6 years ago
1w newerKnowledge Cutoff
When training data ends
Gemini 2.0 Flash Thinking has a knowledge cutoff of 2024-08-01, while o3-mini has a cutoff of 2023-09-30.
Gemini 2.0 Flash Thinking has more recent training data (up to 2024-08-01), making it potentially better informed about events through that date compared to o3-mini (2023-09-30).
Aug 2024
11 mo newerSep 2023
Outputs Comparison
Judge for yourself.
Run your own prompts against Gemini 2.0 Flash Thinking and o3-mini side-by-side, then vote on the output you prefer.
FAQ
Common questions about Gemini 2.0 Flash Thinking vs o3-mini.