GPT-5.4 Mini vs Gemini 3.8 Flash
Compare GPT-5.4 Mini vs Gemini 3.8 Flash 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 3.8 Flash at $0.75/1M input and $3.75/1M output. GPT-5.4 Mini is 1.0x cheaper on input tokens. In reasoning benchmarks, Gemini 3.8 Flash holds the higher AA Intelligence Index rating. For latency-critical streaming, GPT-5.4 Mini delivers 212 t/s (112.0s TTFT) while Gemini 3.8 Flash provides 113 t/s (20.0s TTFT).
Full Metric & Specification Comparison
| Metric | GPT-5.4 Mini | Gemini 3.8 Flash | Advantage |
|---|---|---|---|
| Provider | OpenAI | - | |
| Input Token Cost (1M) | $0.750 | $0.750 | Tie |
| Output Token Cost (1M) | $4.500 | $3.750 | Gemini 3.8 Flash |
| Context Window | 400k tokens | 1,000k tokens | Gemini 3.8 Flash |
| AA Intelligence Index | Unrated | 31/100 | Unrated |
| Streaming Latency | Ultra-Fast | Fast | - |
Key Architectural Takeaways
- Input Token Cost: GPT-5.4 Mini is $0.75/1M vs Gemini 3.8 Flash at $0.75/1M
- Output Token Cost: GPT-5.4 Mini is $4.50/1M vs Gemini 3.8 Flash at $3.75/1M
- Context Window: GPT-5.4 Mini supports 400k tokens vs Gemini 3.8 Flash 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 3.8 Flash rated Fast
Calculate Your Team's Exact Bill Difference
Drag the sliders below to see real-time cost divergences based on your daily token consumption.
Deploying Gemini 3.8 Flash over GPT-5.4 Mini saves $5.63/mo ($68/yr) at this volume.
Frequently Asked Questions
Is GPT-5.4 Mini cheaper than Gemini 3.8 Flash?
GPT-5.4 Mini is significantly more economical, charging $0.75/1M input compared to $0.75/1M for Gemini 3.8 Flash.
Which model should I choose for production?
If your primary constraint is API cost and high query throughput, choose GPT-5.4 Mini. If you require peak reasoning accuracy and complex tool use, Gemini 3.8 Flash is recommended.
How does context window compare between GPT-5.4 Mini and Gemini 3.8 Flash?
Gemini 3.8 Flash offers the larger context window (1,000k tokens), allowing you to pass significantly larger codebases or documents without chunking.
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