GPT-5.4 Mini vs Gemini 3.5 Flash-Lite
Compare GPT-5.4 Mini vs Gemini 3.5 Flash-Lite API pricing, token costs, context windows, and latency. See which model is cheaper and better for your stack.
GPT-5.4 Mini charges $0.75/1M input and $4.50/1M output tokens, compared to Gemini 3.5 Flash-Lite at $0.30/1M input and $2.50/1M output. Gemini 3.5 Flash-Lite is 2.5x cheaper on input tokens. In reasoning benchmarks, Gemini 3.5 Flash-Lite holds the higher AA Intelligence Index rating. For latency-critical streaming, GPT-5.4 Mini delivers 212 t/s (112.0s TTFT) while Gemini 3.5 Flash-Lite provides 317 t/s (5.0s TTFT).
Full Metric & Specification Comparison
| Metric | GPT-5.4 Mini | Gemini 3.5 Flash-Lite | Advantage |
|---|---|---|---|
| Provider | OpenAI | - | |
| Input Token Cost (1M) | $0.750 | $0.300 | Gemini 3.5 Flash-Lite |
| Output Token Cost (1M) | $4.500 | $2.500 | Gemini 3.5 Flash-Lite |
| Context Window | 400k tokens | 1,000k tokens | Gemini 3.5 Flash-Lite |
| AA Intelligence Index | Unrated | 12/100 | Unrated |
| Streaming Latency | Ultra-Fast | Ultra-Fast | - |
Key Architectural Takeaways
- Input Token Cost: GPT-5.4 Mini is $0.75/1M vs Gemini 3.5 Flash-Lite at $0.30/1M
- Output Token Cost: GPT-5.4 Mini is $4.50/1M vs Gemini 3.5 Flash-Lite at $2.50/1M
- Context Window: GPT-5.4 Mini supports 400k tokens vs Gemini 3.5 Flash-Lite with 1,000k tokens
- Benchmark Intelligence Rating: not rated for one or both models
- Inference Latency: GPT-5.4 Mini is rated Ultra-Fast vs Gemini 3.5 Flash-Lite rated Ultra-Fast
Calculate Your Team's Exact Bill Difference
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Deploying Gemini 3.5 Flash-Lite over GPT-5.4 Mini saves $21.75/mo ($261/yr) at this volume.
Frequently Asked Questions
Is GPT-5.4 Mini cheaper than Gemini 3.5 Flash-Lite?
Gemini 3.5 Flash-Lite is significantly more economical, charging $0.30/1M input compared to $0.75/1M for GPT-5.4 Mini.
Which model should I choose for production?
If your primary constraint is API cost and high query throughput, choose Gemini 3.5 Flash-Lite. If you require peak reasoning accuracy and complex tool use, Gemini 3.5 Flash-Lite is recommended.
How does context window compare between GPT-5.4 Mini and Gemini 3.5 Flash-Lite?
Gemini 3.5 Flash-Lite offers the larger context window (1,000k tokens), allowing you to pass significantly larger codebases or documents without chunking.
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