# Qwen3.5 397B A17B release · 2026-02-16 · snapshot 2026-10-27

Creator: Alibaba · 2 effort levels

| Effort level | Input modalities | Intelligence | Total cost | E2E | On the frontier today | ID |
|---|---|---|---|---|---|---|
| Qwen3.5 397B A17B (Reasoning) | Text, Image | 18.40 | $941 | 65.3s | no | `qwen3-5-397b-a17b` |
| Qwen3.5 397B A17B (Non-reasoning) | Text, Image | 21.40 | - | 10.7s | no | `qwen3-5-397b-a17b-non-reasoning` |

Open weights · on the open-weights frontier today: 0 of 2

## Launch day (2026-02-16)

- Reached the frontier: 1 of 2
- Reached the open-weights frontier: 1 of 2
- Impact (intelligence × log-cost hypervolume gained): 0.30
- Rank: #34 of 45 releases this past year


> Metrics snapshot: 2026-10-27T03:17:53Z. Intelligence index version: unknown. Release timeline, frontier age, release impact and shakeup cards are reconstructions using one selected snapshot's metrics, not a record of what was known at release. Scores, benchmark cost and derived value may change when the index methodology changes. Source documentation advertises v4.3.2; API correspondence is unverified.