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GPT-5.4 mini vs Gemini 3.1 Flash-Lite
GPT-5.4 mini at $0.75/$4.50 vs Gemini 3.1 Flash-Lite at $0.25/$1.50. Gemini 3.1 Flash-Lite is 67% cheaper on both input and output with 2.5x the context window. The ultra-cheap option from Google.
Pricing data verified: Jul 4, 2026
| Specification | GPT-5.4 mini (OpenAI) | Gemini 3.1 Flash-Lite (Google) |
|---|---|---|
| Input Price (per 1M tokens) | $0.75 | $0.25 |
| Output Price (per 1M tokens) | $4.50 | $1.50 |
| Context Window | 400K tokens | 1M tokens |
| Tier | Budget | Budget |
| Provider | OpenAI |
Calculate Your Exact Savings
Gemini 3.1 Flash-Lite is dramatically cheaper on both input and output. See how much you save at your usage level.
Which Model for Which Use Case?
High-Volume Chatbots
For chatbots processing millions of messages, Gemini 3.1 Flash-Lite at $0.25/$1.50 is 67% cheaper than GPT-5.4 mini at $0.75/$4.50. At 1M messages/month, Gemini costs $750 vs GPT-5.4 mini's $2,250 — saving $1,500/month.
Content Classification
Sentiment analysis, topic classification at scale. Input-heavy workloads benefit most from Gemini's 67% input savings ($0.25 vs $0.75/1M). At 100M input tokens/month, Gemini saves $50/month.
Quick Summaries
Document summarization, key extraction. Output costs matter — Gemini at $1.50/1M output is 67% cheaper than GPT-5.4 mini at $4.50/1M. For high-volume summarization, savings compound dramatically.
Quality vs Cost
Gemini 3.1 Flash-Lite is cheapest, but GPT-5.4 mini may produce higher quality for complex reasoning. For simple tasks, Gemini wins on cost. For nuanced tasks, test both on your workload.
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Frequently Asked Questions
How much cheaper is Gemini 3.1 Flash-Lite than GPT-5.4 mini?
Gemini 3.1 Flash-Lite costs $0.25/$1.50 per 1M tokens while GPT-5.4 mini costs $0.75/$4.50. That's 67% cheaper on both input and output. At 1M input + 1M output tokens/month, Gemini costs $1.75 vs GPT-5.4 mini's $5.25 — saving $3.50/month. At 10M+10M tokens, savings reach $35/month.
Which model has a larger context window?
Gemini 3.1 Flash-Lite has a 1M token context window, 2.5x larger than GPT-5.4 mini's 400K context. Gemini can handle much longer documents and codebases.
Is Gemini 3.1 Flash-Lite or GPT-5.4 mini better quality?
Quality depends on the task. Gemini 3.1 Flash-Lite at $0.25/$1.50 is the cheapest option. GPT-5.4 mini at $0.75/$4.50 may produce higher quality for complex reasoning. For simple tasks, quality is similar.
When should I choose GPT-5.4 mini over Gemini 3.1 Flash-Lite?
Choose GPT-5.4 mini ($0.75/$4.50) when you need higher quality output for complex tasks. Choose Gemini 3.1 Flash-Lite ($0.25/$1.50) for 67% cost savings on simpler workloads.