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Gemini 3.5 Flash-Lite vs Grok 4.20

At a glance

Google's high-efficiency model for focused subagent work and multi-agent workflows.

1.0M ctx$0.30/$2.50 per M

xAI's newest flagship model with industry-leading speed and agentic tool calling.

862M ctx$1.25/$2.50 per M#12/92
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Cheaper46%
Capability
Capability—
Agentic
Terminal Tasks—Novel Reasoning—
Reasoning
CodingInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI85.7
Agentic
Terminal Tasks57.3%Novel Reasoning65.1%
Specs
1.0M
Context
66K
Max output
Jul 2026
Released
2M
Context
16K
Max output
Mar 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input76%$0.30/M tokens
Output$2.50/M tokens
Reasoning$2.50/M tokens
Cache read85%$0.03/M tokens
Cache write$0.08/M tokens
Image input$0.30/M tokens
Audio input$0.30/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input$1.25/M tokens
Output$2.50/M tokens
Cache read$0.20/M tokens
Web search64%$0.005/search
Chat with Gemini 3.5 Flash-LiteGo to model
Chat with Grok 4.20Go to model
Frequently Asked Questions: Gemini 3.5 Flash-Lite vs Grok 4.20▼

Which is better, Gemini 3.5 Flash-Lite or Grok 4.20?

▼

Both Gemini 3.5 Flash-Lite and Grok 4.20 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 3.5 Flash-Lite or Grok 4.20?

▼

Gemini 3.5 Flash-Lite has a lower blended cost. Gemini 3.5 Flash-Lite: $0.30 input / $2.50 output. Grok 4.20: $1.25 input / $2.50 output.

Which has a larger context window, Gemini 3.5 Flash-Lite or Grok 4.20?

▼

Grok 4.20 has a larger context window: Gemini 3.5 Flash-Lite supports 1M tokens vs Grok 4.20 at 2M tokens.

Do both Gemini 3.5 Flash-Lite and Grok 4.20 support vision?

▼

Yes, both Gemini 3.5 Flash-Lite and Grok 4.20 support vision/image input.

What are the key differences between Gemini 3.5 Flash-Lite and Grok 4.20?

▼

Key differences: Gemini 3.5 Flash-Lite is significantly cheaper. 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 3.5 Flash-Lite and Grok 4.20 for free on idapt.app to see which performs better for your specific needs.

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