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Qwen3.5 397B Fast
alibaba·alibaba/qwen3.5-397b-fast·GA·Open weights·qwen series
Efficient Qwen model for fast chat, extraction, and high-volume workloads
At a glance
Reference price$0.69 / $4.14 per 1M
Cache read $0.172 · Neuralwatt
Lowest paid$0.69 / $4.14
Neuralwatt Gateway
Context262,128
Output limit262,128
Capabilities
Reasoning✓ Tool use? Structured output✓ TemperatureAttachments
Modalities
Text
Knowledge cutoff—
Released / updated2026-02-01 / 2026-02-01
Quality & performance
Artificial Analysis doesn't cover this model (267 of 2059 have data). Quality data comes from independent evals covering widely used models.
Available at 1 providers1 with public prices
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| Neuralwatt | Gateway | $0.69 | $4.14 | $0.172 | — | 262,128 | 262,128 |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
Your usage cost
1Neuralwatt$282.90
The cheapest paid channel is the only channel.
Related models
Qwen3.5 0.8Bsame series$0.06 / $0.12Qwen3.5 4Bsame series$0.10 / $0.20Qwen3.8 27B TEEsame series$0.40 / $3.00Qwen3-Next 80B-A3B Instructcheaper alternative$0.144 / $0.574Qwen3-Coder 30B-A3B Instructcheaper alternative$0.216 / $0.861Qwen3 Coder Nextcheaper alternative$0.50 / $1.20Llama-3.1-8B-Instructcheaper alternative$0.15 / $0.45
Price historyone sample accumulated per data sync
Input listOutput listMin blended