Gemini 3.8 Flash vs Gemini 3.5 Flash-Lite
Compare Gemini 3.8 Flash vs Gemini 3.5 Flash-Lite API pricing, token costs, context windows, and latency. See which model is cheaper and better for your stack.
Gemini 3.8 Flash charges $0.75/1M input and $3.75/1M 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 3.8 Flash holds the higher AA Intelligence Index rating (31/100). For latency-critical streaming, Gemini 3.8 Flash delivers 113 t/s (20.0s TTFT) while Gemini 3.5 Flash-Lite provides 317 t/s (5.0s TTFT).
Full Metric & Specification Comparison
| Metric | Gemini 3.8 Flash | Gemini 3.5 Flash-Lite | Advantage |
|---|---|---|---|
| Provider | - | ||
| Input Token Cost (1M) | $0.750 | $0.300 | Gemini 3.5 Flash-Lite |
| Output Token Cost (1M) | $3.750 | $2.500 | Gemini 3.5 Flash-Lite |
| Context Window | 1,000k tokens | 1,000k tokens | Tie |
| AA Intelligence Index | 31/100 | 12/100 | Gemini 3.8 Flash |
| Streaming Latency | Fast | Ultra-Fast | - |
Key Architectural Takeaways
- Input Token Cost: Gemini 3.8 Flash is $0.75/1M vs Gemini 3.5 Flash-Lite at $0.30/1M
- Output Token Cost: Gemini 3.8 Flash is $3.75/1M vs Gemini 3.5 Flash-Lite at $2.50/1M
- Context Window: Gemini 3.8 Flash supports 1,000k tokens vs Gemini 3.5 Flash-Lite with 1,000k tokens
- Benchmark Intelligence Rating: Gemini 3.8 Flash scores 31/100 vs Gemini 3.5 Flash-Lite at 12/100 (AA Index v5)
- Inference Latency: Gemini 3.8 Flash is rated 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 Gemini 3.8 Flash saves $16.13/mo ($194/yr) at this volume.
Frequently Asked Questions
Is Gemini 3.8 Flash 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 Gemini 3.8 Flash.
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 3.8 Flash is recommended.
How does context window compare between Gemini 3.8 Flash and Gemini 3.5 Flash-Lite?
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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