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Gemini 3.1 Flash Lite vs GLM 5.1

At a glance
GoogleGemini 3.1 Flash Lite

Google's high-efficiency model for high-volume use cases at half the cost of Gemini 3 Flash.

771.0M ctx$0.25/$1.50 per M#37/92
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 Flash Lite
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper
Capability
CapabilityECI76.7
Reasoning & Knowledge
Graduate Science—Expert-Level8.6%Factual Recall—
Math
Competition Math—Research Math—
Coding
Real-World Coding—
Zhipu AIGLM 5.1
Reasoning
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Smarter
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%
Specs
GoogleGemini 3.1 Flash Lite
1.0M
Context
66K
Max output
Mar 2026
Released
Zhipu AIGLM 5.1
203K
Context
16K
Max output
Apr 2026
Released
Capabilities
GoogleGemini 3.1 Flash Lite
Vision
Audio
Reasoning
Zhipu AIGLM 5.1
Vision
Audio
Reasoning
Pricing
GoogleGemini 3.1 Flash Lite
Live pricing, shown before you run
Input$0.25/M tokens
Output$1.50/M tokens
Reasoning$1.50/M tokens
Cache read$0.02/M tokens
Cache write$0.08/M tokens
Image input$0.25/M tokens
Audio input$0.50/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 Flash LiteGo to model
Chat with GLM 5.1Go to model
Frequently Asked Questions: Gemini 3.1 Flash Lite vs GLM 5.1▼

Which is better, Gemini 3.1 Flash Lite or GLM 5.1?

▼

Based on the Capability Index, GLM 5.1 scores higher (82.3 vs 76.7). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.

Which is cheaper, Gemini 3.1 Flash Lite or GLM 5.1?

▼

Gemini 3.1 Flash Lite has a lower blended cost. Gemini 3.1 Flash Lite: $0.25 input / $1.50 output. GLM 5.1: $0.98 input / $3.08 output.

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

▼

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

Do both Gemini 3.1 Flash Lite and GLM 5.1 support vision?

▼

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

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

▼

Key differences: GLM 5.1 has a notably higher capability index (5.6 point gap); Gemini 3.1 Flash Lite is significantly cheaper; only Gemini 3.1 Flash Lite 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 Flash Lite and GLM 5.1 for free on idapt.app to see which performs better for your specific needs.

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