Model comparison
o1 vs Gemini 3.1 Pro
Gemini 3.1 Pro supports a significantly larger token context size of 1,048,576 compared to o1's 200,000, alongside greater modality support.
OpenAI
o1
The first reasoning model — historically important, now superseded.
Gemini 3.1 Pro
Google's latest frontier model with expanded reasoning.
Specs
| Metric | o1 | Gemini 3.1 Pro |
|---|---|---|
| Context window | 200K tokens | 1.0M tokens↑ |
| Input $/1M tokens | $15.00 | $2.00↑ |
| Output $/1M tokens | $60.00 | $12.00↑ |
| Modalities | Text · Image · File | Audio · File · Image · Text · Video |
| Open weights | No | No |
| Released | Dec 2024 | — |
Capability differences
| Capability | o1 | Gemini 3.1 Pro |
|---|---|---|
| Tool use | No | Yes |
| Vision | No | Yes |
| Prompt caching | No | Yes |
How they differ
Context handling
o1
o1 has a context size of 200,000 tokens, suited for smaller or moderate input lengths.
Gemini 3.1 Pro
Gemini 3.1 Pro supports a context size of 1,048,576 tokens, enabling extended document or interaction processing.
Input modalities
o1
o1 processes text, image, and file inputs, lacking support for audio and video.
Gemini 3.1 Pro
Gemini 3.1 Pro processes text, image, audio, video, and file inputs, offering comprehensive multimodal support.
Cost profile
o1
o1 costs $15.0 per 1M input tokens and $60.0 per 1M output tokens, reflecting a higher cost structure.
Gemini 3.1 Pro
Gemini 3.1 Pro costs $2.0 per 1M input tokens and $12.0 per 1M output tokens, making it more cost-efficient.
o1 — what sets it apart
- +o1's design is text-first with image and file support, prioritizing simpler modality integration.
- +o1's higher pricing structure suggests a focus on highly specialized or niche use cases.
Gemini 3.1 Pro — what sets it apart
- +Gemini 3.1 Pro supports a multimodal reasoning approach across text, image, audio, video, and file inputs.
- +With a token context of 1,048,576, Gemini 3.1 Pro enables very large data interaction capabilities.
- +Gemini 3.1 Pro offers a significantly more affordable pricing model across modalities.
The most consequential difference is Gemini 3.1 Pro's vastly larger token context and broader multimodal capabilities compared to o1.
Analysis synthesized from gpt-4o, llama-4-maverick, phi-4, etc.