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GPT 5.1 Codex Mini vs Gemini 3.5 Flash-Lite

At a glance

Compact coding model for fast, cost-efficient development tasks.

400K ctx$0.25/$2.00 per M

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

1.0M ctx$0.30/$2.50 per M
Agent Demos
All agent demos

No shared agent demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
CodingInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-07-10
Agentic
Terminal Tasks61.6%
No benchmarks available

This model hasn't been benchmarked yet.

Specs
400K
Context
100K
Max output
Nov 2025
Released
1.0M
Context
66K
Max output
Jul 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input17%$0.25/M tokens
Output20%$2.00/M tokens
Cache read17%$0.02/M tokens
Web search29%$0.01/search
Live pricing, shown before you run
Input$0.30/M tokens
Output$2.50/M tokens
Reasoning$2.50/M tokens
Cache read$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
Chat with GPT 5.1 Codex MiniGo to model
Chat with Gemini 3.5 Flash-LiteGo to model
Frequently Asked Questions: GPT 5.1 Codex Mini vs Gemini 3.5 Flash-Lite▼

Which is better, GPT 5.1 Codex Mini or Gemini 3.5 Flash-Lite?

▼

Both GPT 5.1 Codex Mini and Gemini 3.5 Flash-Lite 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, GPT 5.1 Codex Mini or Gemini 3.5 Flash-Lite?

▼

GPT 5.1 Codex Mini has a lower blended cost. GPT 5.1 Codex Mini: $0.25 input / $2.00 output. Gemini 3.5 Flash-Lite: $0.30 input / $2.50 output.

Which has a larger context window, GPT 5.1 Codex Mini or Gemini 3.5 Flash-Lite?

▼

Gemini 3.5 Flash-Lite has a larger context window: GPT 5.1 Codex Mini supports 400K tokens vs Gemini 3.5 Flash-Lite at 1M tokens.

Do both GPT 5.1 Codex Mini and Gemini 3.5 Flash-Lite support vision?

▼

Yes, both GPT 5.1 Codex Mini and Gemini 3.5 Flash-Lite support vision/image input.

What are the key differences between GPT 5.1 Codex Mini and Gemini 3.5 Flash-Lite?

▼

GPT 5.1 Codex Mini and Gemini 3.5 Flash-Lite 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 GPT 5.1 Codex Mini and Gemini 3.5 Flash-Lite for free on idapt.app to see which performs better for your specific needs.

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