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Gemini 3.1 Pro vs GLM 5.1

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
Zhipu AIGLM 5.1

Zhipu AI's most capable model with a major leap in coding and long-horizon task performance.

82203K ctx$0.98/$3.08 per M#19/92
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
Smarter
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
Zhipu AIGLM 5.1
Reasoning
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper
Capability
CapabilityECI82.3
Reasoning & Knowledge
Graduate Science85.5%Expert-Level—Factual Recall37.3%
Math
Competition Math92.2%Research Math33.4%
Coding
Real-World Coding74.2%
Agentic
Terminal Tasks—Novel Reasoning—Task Horizon—
Specs
GoogleGemini 3.1 Pro
1.0M
Context
66K
Max output
Feb 2026
Released
Zhipu AIGLM 5.1
203K
Context
16K
Max output
Apr 2026
Released
Capabilities
GoogleGemini 3.1 Pro
Vision
Audio
Reasoning
Zhipu AIGLM 5.1
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
Zhipu AIGLM 5.1
Live pricing, shown before you run
Input$0.98/M tokens
Output$3.08/M tokens
Cache read$0.18/M tokens
Chat with Gemini 3.1 ProGo to model
Chat with GLM 5.1Go to model
Frequently Asked Questions: Gemini 3.1 Pro vs GLM 5.1▼

Which is better, Gemini 3.1 Pro or GLM 5.1?

▼

Based on the Capability Index, Gemini 3.1 Pro scores higher (86.4 vs 82.3). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.

Which is cheaper, Gemini 3.1 Pro or GLM 5.1?

▼

GLM 5.1 has a lower blended cost. Gemini 3.1 Pro: $2.00 input / $12.00 output. GLM 5.1: $0.98 input / $3.08 output.

Which has a larger context window, Gemini 3.1 Pro or GLM 5.1?

▼

Gemini 3.1 Pro has a larger context window: Gemini 3.1 Pro supports 1M tokens vs GLM 5.1 at 203K tokens.

Do both Gemini 3.1 Pro and GLM 5.1 support vision?

▼

Gemini 3.1 Pro supports vision/image input, but GLM 5.1 does not.

Which has better coding performance, Gemini 3.1 Pro or GLM 5.1?

▼

Gemini 3.1 Pro scores higher on SWE-bench Verified: Gemini 3.1 Pro resolves 81% vs GLM 5.1 at 74%.

What are the key differences between Gemini 3.1 Pro and GLM 5.1?

▼

Key differences: GLM 5.1 is significantly cheaper; only Gemini 3.1 Pro supports vision input. Compare full specs on this page.

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 GLM 5.1 for free on idapt.app to see which performs better for your specific needs.

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