Gemini 3.1 Flash-Lite Preview vs GPT-4o mini
Gemini 3.1 Flash-Lite Preview vs GPT-4o mini: GPT-4o mini is cheaper for input-heavy usage ($0.15/M vs $0.25/M input tokens), while Gemini 3.1 Flash-Lite Preview is better for long-context tasks (1,000,000 tokens).
Direct answer: choose GPT-4o mini for lower token spend and choose Gemini 3.1 Flash-Lite Preview when your workload needs longer context.
Compare input and output token pricing, context windows, and monthly cost estimates on one page so you can pick the cheaper model fast.
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
Gemini 3.1 Flash-Lite Preview
GPT-4o mini
Cost Differences
GPT-4o mini costs less than Gemini 3.1 Flash-Lite Preview
Quick Recommendation
Winner for direct API pricing: GPT-4o mini. At the default workload, GPT-4o mini saves about $1.65/month ($20.075/year) versus Gemini 3.1 Flash-Lite Preview.
Feature Comparison
| Feature | Gemini 3.1 Flash-Lite Preview | GPT-4o mini |
|---|---|---|
| Provider | OpenAI | |
| Input Price | $0.25/1M tokens | $0.15/1M tokens |
| Output Price | $1.50/1M tokens | $0.60/1M tokens |
| Context Window | 1,000,000 tokens | 128,000 tokens |
| Max Output | 8,192 tokens | 16,384 tokens |
| Category | efficient | efficient |
| Capabilities | textvisioncode | textvision |
| Release Date | 3/3/2026 | 7/18/2024 |
Gemini 3.1 Flash-Lite Preview vs GPT-4o mini: Which Should You Choose?
Choosing between Gemini 3.1 Flash-Lite Preview and GPT-4o mini depends on your priorities: cost efficiency, context length, or raw capability. GPT-4o mini is the more affordable option at $0.15/1M input tokens — 40% cheaper than Gemini 3.1 Flash-Lite Preview. Meanwhile, Gemini 3.1 Flash-Lite Preview offers a significantly larger context window at 1,000,000 tokens vs 128,000 for GPT-4o mini.
These models come from different providers — Google and OpenAI — which means different API ecosystems, SDKs, rate limits, and terms of service. If you're already integrated with Google, switching to OpenAIinvolves migration effort beyond just pricing. Factor in your existing infrastructure when deciding.
Both models are in the efficient category, making this a direct head-to-head comparison. At scale — say 10,000 requests per day — the cost difference adds up: GPT-4o mini would save you roughly $165.00/month compared to Gemini 3.1 Flash-Lite Preview. For startups and indie developers, that difference can be significant.
Output costs matter too. Gemini 3.1 Flash-Lite Preview charges $1.50/1M output tokens vs $0.60 for GPT-4o mini. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. GPT-4o mini has the edge here at $0.60/1M output tokens.
Multimodal capabilities: Both models support vision (image understanding), so you can send images alongside text prompts with either option.
Best Use Cases
Choose Gemini 3.1 Flash-Lite Preview when:
- • You need a larger context window (1,000,000 tokens)
- • You need more capabilities (code)
- • You're already using Google's API ecosystem
- • You're running high-volume, latency-sensitive workloads
Choose GPT-4o mini when:
- • Budget is a primary concern
- • You need longer outputs (up to 16,384 tokens)
- • You're already using OpenAI's API ecosystem
- • You're running high-volume, latency-sensitive workloads
Pros and Caveats at a Glance
Gemini 3.1 Flash-Lite Preview
- • Input pricing: $0.25/M tokens
- • Output pricing: $1.50/M tokens
- • Context window: 1,000,000 tokens
- • Max output: 8,192 tokens
Watch out for
- • Higher input cost than GPT-4o mini
- • Higher output cost than GPT-4o mini
GPT-4o mini
- • Input pricing: $0.15/M tokens
- • Output pricing: $0.60/M tokens
- • Context window: 128,000 tokens
- • Max output: 16,384 tokens
Watch out for
- • Smaller context window than Gemini 3.1 Flash-Lite Preview
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
Gemini 3.1 Flash-Lite Preview (Google)
GPT-4o mini (OpenAI)
Start using Gemini 3.1 Flash-Lite Preview today
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Sign Up for OpenAI →Frequently Asked Questions
Which is cheaper, Gemini 3.1 Flash-Lite Preview or GPT-4o mini?▼
What is the context window difference between Gemini 3.1 Flash-Lite Preview and GPT-4o mini?▼
Which model is better for AI Chatbot?▼
Which model has better overall pricing for heavy usage?▼
Where can I compare Google and OpenAI API pricing beyond this model matchup?▼
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