Gemini 2.5 Flash-Lite vs Qwen 3.5 397B
Complete pricing and performance comparison between Google's Gemini 2.5 Flash-Lite and Alibaba's Qwen 3.5 397B.
Quick Verdict
Cheaper
Gemini 2.5 Flash-Lite
6.0x cheaper input, 9.0x cheaper output
Larger Context
Gemini 2.5 Flash-Lite
1.0M vs 128K
Pricing Comparison
| Spec | Gemini 2.5 Flash-Lite | Qwen 3.5 397B | Difference |
|---|---|---|---|
| Provider | Alibaba | ||
| Input / 1M tokens | $0.1 | $0.6 | Gemini 2.5 Flash-Lite is 83% more expensive |
| Output / 1M tokens | $0.4 | $3.6 | Gemini 2.5 Flash-Lite is 89% more expensive |
| Context Window | 1.0M | 128K | 8x difference |
| Max Output | 66K | 33K |
Performance Benchmarks
| Metric | Gemini 2.5 Flash-Lite | Qwen 3.5 397B | Winner |
|---|---|---|---|
| Quality Index | 13 | -- | N/A |
| Output Speed | 336 tok/s | -- | N/A |
| Value (Quality/$) | 127.0 | -- | Higher = better value |
Benchmark data from Artificial Analysis. Quality Index is a composite score across reasoning, coding, and knowledge tasks.
Cost at Scale
Estimated cost at different usage levels (3:1 input-to-output token ratio, typical for chat).
| Usage | Gemini 2.5 Flash-Lite | Qwen 3.5 397B | Savings |
|---|---|---|---|
Single request 1K in / 300 out | $0.0002 | $0.0017 | Gemini 2.5 Flash-Lite saves $0.0015 |
10 requests 10K in / 3K out | $0.0022 | $0.017 | Gemini 2.5 Flash-Lite saves $0.015 |
100 requests 100K in / 30K out | $0.022 | $0.168 | Gemini 2.5 Flash-Lite saves $0.146 |
1,000 requests 1M in / 300K out | $0.220 | $1.68 | Gemini 2.5 Flash-Lite saves $1.46 |
10,000 requests 10M in / 3M out | $2.20 | $16.80 | Gemini 2.5 Flash-Lite saves $14.60 |
1M requests/mo 1B in / 300M out | $220.00 | $1680.00 | Gemini 2.5 Flash-Lite saves $1460.00 |
Pros & Cons
Gemini 2.5 Flash-Lite Strengths
- +Cheaper input tokens
- +Cheaper output tokens
- +Larger context window (1.0M vs 128K)
- +Higher max output tokens
Qwen 3.5 397B Strengths
Part of the Alibaba ecosystem
When to Use Each Model
Choose Gemini 2.5 Flash-Lite for
- →Budget-conscious projects where cost is the primary factor
- →Long documents, large codebases, or multi-turn conversations
- →Generating long-form content or detailed code
Choose Qwen 3.5 397B for
- →Projects already integrated with Alibaba's ecosystem
Frequently Asked Questions
Which is cheaper, Gemini 2.5 Flash-Lite or Qwen 3.5 397B?
For input tokens, Gemini 2.5 Flash-Lite is 6.0x cheaper at $0.1/1M tokens. For output tokens, Gemini 2.5 Flash-Lite is 9.0x cheaper at $0.4/1M tokens. At typical usage (1M input + 300K output), Gemini 2.5 Flash-Lite costs $0.220 vs Qwen 3.5 397B at $1.68.
What's the context window difference?
Gemini 2.5 Flash-Lite supports 1.0M context (1,048,576 tokens), while Qwen 3.5 397B supports 128K (128,000 tokens). Gemini 2.5 Flash-Lite can handle 8x more context in a single request.
Which model has better benchmarks?
When should I choose Gemini 2.5 Flash-Lite over Qwen 3.5 397B?
Choose Gemini 2.5 Flash-Lite when you need: Cheaper input tokens, Cheaper output tokens, Larger context window (1.0M vs 128K), Higher max output tokens. Choose Qwen 3.5 397B when you need: a Alibaba ecosystem model.
How much would 10,000 API requests cost?
At 1K input + 300 output tokens per request (typical chat): Gemini 2.5 Flash-Lite = $2.20, Qwen 3.5 397B = $16.80. At 10K input + 1K output per request (longer conversations): Gemini 2.5 Flash-Lite = $14.00, Qwen 3.5 397B = $96.00.
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