# DeepSeek V3.1 Terminus release · 2025-09-22 · snapshot 2026-10-26

Creator: DeepSeek · 2 effort levels

| Effort level | Input modalities | Intelligence | Total cost | E2E | On the frontier today | ID |
|---|---|---|---|---|---|---|
| DeepSeek V3.1 Terminus (Non-reasoning) | Text | 13.90 | - | 7.37s | no | `deepseek-v3-1-terminus` |
| DeepSeek V3.1 Terminus (Reasoning) | Text | 14.80 | - | - | no | `deepseek-v3-1-terminus-reasoning` |

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


> Metrics snapshot: 2026-10-26T09:34:16Z. 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.