OpenAI: GPT-5.6 Sol Pro vs Google: Gemini 3.1 Pro Preview

Side-by-side pricing, context window, and capabilities — try both on ChatLima.

OpenAI: GPT-5.6 Sol Pro

Premium

Description

GPT-5.6 Sol Pro is the same underlying model as [GPT-5.6 Sol](https://openrouter.ai/openai/gpt-5.6-sol), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode

Strengths

•Multimodal understanding with text and image support
•Large context window (1050k tokens)

Best For

Image and document understanding

Google: Gemini 3.1 Pro Preview

Premium

Description

Gemini 3.1 Pro Preview is Google’s frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage across complex workflows. Building on the multimodal foundation...

Strengths

•Multimodal understanding with text and image support
•Large context window (1049k tokens)

Best For

Image and document understanding

Feature	OpenAI: GPT-5.6 Sol Pro	Google: Gemini 3.1 Pro Preview
Provider	OpenRouter	OpenRouter
Context Length	`1,050,000 tokens`	`1,048,576 tokens`
Input Price	`$5.00/M`	`$2.00/M`
Output Price	`$30.00/M`	`$12.00/M`
Vision Support	Yes	Yes
Higher cost	Yes	Yes
Capabilities	TextVision	TextVision