Qwen3.5 397B A17B
by Alibaba (Qwen) · qwen/qwen3.5-397b-a17b · #258 cheapest of 422 paid models
Prices updated Sep 19, 2026, 6:21 PM UTC · refreshed hourly
The Qwen3.5 series 397B-A17B native vision-language model is built on a hybrid architecture that integrates a linear attention mechanism with a sparse mixture-of-experts model, achieving higher inference efficiency. It delivers...
Compare vs:Claude Sonnet 5Claude Opus 4.6Claude Haiku 4.5GPT-5.6 Sol
Pricing
Input
$0.55
per 1M tokens
Output
$3.50
per 1M tokens
Blended (3:1)
$1.29
3 input : 1 output
Cache read
$0.225
per 1M cached tokens
Cache write
—
per 1M tokens
Cache & batch economics
Effective prices for Qwen3.5 397B A17B with prompt caching.
| Cache hit rate | Effective blended $/1M | Example request* | vs no cache |
|---|---|---|---|
| 0% | $1.29 | $0.0596 | — |
| 50% | $1.17 | $0.0434 | −27% |
| 90% | $1.07 | $0.0303 | −49% |
*Example: 100K sticky context + 2K new input + 1K output. Batch discount is an approximate 50% off list rates (available for OpenAI / Anthropic / Google — not flagged for this creator). Confirm on the vendor’s pricing page.
What a request costs
| Workload | Input tokens | Output tokens | Cost / request | Cost / 1K requests |
|---|---|---|---|---|
| Short chat message | 500 | 300 | $0.001325 | $1.32 |
| Document summary | 8,000 | 1,000 | $0.0079 | $7.90 |
| Codebase question (RAG) | 30,000 | 2,000 | $0.0235 | $23.50 |
| Long-context analysis | 150,000 | 5,000 | $0.1 | $100.00 |
Performance
Intelligence Index
19.1
AA composite quality
Coding Index
48.2
Math Index
—
Agentic Index
10.6
Output speed
86 tok/s
median
Time to first token
1.62s
median
Time to first answer
38.85s
after reasoning tokens
Artificial Analysis benchmarks
| Benchmark | Score |
|---|---|
| GPQA Diamond | 89.3% |
| Humanity's Last Exam | 29.0% |
| SciCode | 44.8% |
| IFBench | 78.8% |
| AA-LCR (Long Context Reasoning) | 77.3% |
| Terminal-Bench Hard | 40.9% |
| Terminal-Bench 2.1 | 51.3% |
| τ²-Bench (Telecom) | 95.6% |
| τ³-Bench Banking | 13.4% |
Design Arena Elo
| Category | Elo |
|---|---|
| Website | 1,203 |
| UI components | 1,178 |
| Data viz | 1,190 |
| SVG | 1,163 |
| 3D | 1,190 |
| Game dev | 1,163 |
| Code categories | 1,195 |
Specs
Context window
262K
tokens
Max output
236K
tokens
Input modalities
text, image, video
Tokenizer
Qwen3