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Gemini 3.1 Pro vs GPT 5.6 Terra

At a glance
GoogleGemini 3.1 Pro

Google's frontier model with a large leap in core reasoning.

861.0M ctx$2.00/$12.00 per M#10/92
OpenAIGPT 5.6 Terra

OpenAI's balanced GPT-5.6 tier — GPT-5.5-class quality for everyday work at half the price.

1.1M ctx$2.50/$15.00 per M
AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
GoogleGemini 3.1 Pro
Reasoning
Sources:Epoch ECI·Epoch AI·Provider·OpenRouter· as of 2026-07-10
Cheaper
Capability
CapabilityECI86.4
Reasoning & Knowledge
Graduate Science94.1%Expert-Level46.4%Factual Recall77.3%
Math
Competition Math95.6%Research Math36.9%
Coding
Real-World Coding80.6%
Agentic
Terminal Tasks80.2%Novel Reasoning77.1%Task Horizon6.4h
OpenAIGPT 5.6 Terra
Reasoning
CodingInsufficient data
MathInsufficient data
Sources:Provider·OpenRouter· as of 2026-07-11
Capability
Capability—
Reasoning & Knowledge
Graduate Science92.9%Expert-Level—Factual Recall—
Math
Competition Math—Research Math—
Coding
Real-World Coding—
Agentic
Terminal Tasks87.4%Novel Reasoning—Task Horizon—
Specs
GoogleGemini 3.1 Pro
1.0M
Context
66K
Max output
Feb 2026
Released
OpenAIGPT 5.6 Terra
1.1M
Context
128K
Max output
Jul 2026
Released
Capabilities
GoogleGemini 3.1 Pro
Vision
Audio
Reasoning
OpenAIGPT 5.6 Terra
Vision
Audio
Reasoning
Pricing
GoogleGemini 3.1 Pro
Live pricing, shown before you run
Input$2.00/M tokens
Output$12.00/M tokens
Reasoning$12.00/M tokens
Cache read$0.20/M tokens
Cache write$0.38/M tokens
Image input$2.00/M tokens
Audio input$2.00/M tokens
Web search$0.01/search
OpenAIGPT 5.6 Terra
Live pricing, shown before you run
Input$2.50/M tokens
Output$15.00/M tokens
Cache read$0.25/M tokens
Web search$0.01/search
Chat with Gemini 3.1 ProGo to model
Chat with GPT 5.6 TerraGo to model
Frequently Asked Questions: Gemini 3.1 Pro vs GPT 5.6 Terra▼

Which is better, Gemini 3.1 Pro or GPT 5.6 Terra?

▼

Both Gemini 3.1 Pro and GPT 5.6 Terra are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, Gemini 3.1 Pro or GPT 5.6 Terra?

▼

Gemini 3.1 Pro has a lower blended cost. Gemini 3.1 Pro: $2.00 input / $12.00 output. GPT 5.6 Terra: $2.50 input / $15.00 output.

Which has a larger context window, Gemini 3.1 Pro or GPT 5.6 Terra?

▼

GPT 5.6 Terra has a larger context window: Gemini 3.1 Pro supports 1M tokens vs GPT 5.6 Terra at 1.1M tokens.

Do both Gemini 3.1 Pro and GPT 5.6 Terra support vision?

▼

Yes, both Gemini 3.1 Pro and GPT 5.6 Terra support vision/image input.

What are the key differences between Gemini 3.1 Pro and GPT 5.6 Terra?

▼

Gemini 3.1 Pro and GPT 5.6 Terra have similar overall capabilities. The main differences lie in pricing, context window size, and provider-specific strengths. Use this comparison page to review all metrics side by side.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Gemini 3.1 Pro and GPT 5.6 Terra for free on idapt.app to see which performs better for your specific needs.

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