DeepSeek V4 1 Flash 1017 vs DeepSeek V3 1 Terminus: Live Promos, Pricing, Hidden Fees & Latency
DeepSeek V4 1 Flash 1017 (deepseek/deepseek-v4.1-flash-1017) — Automatic Disk KV Cache ($0.014/1M) & Off-Peak Promo
DeepSeek-V4 Pro (1.6T MoE) automatically caches repeated 64-token prompt prefixes on NVMe storage at $0.07/1M input tokens (50% off $0.14 base) with zero code changes required, plus off-peak UTC scheduling discounts.
DeepSeek V3 1 Terminus (deepseek/deepseek-v3.1-terminus) — Automatic Disk KV Cache ($0.014/1M) & Off-Peak Promo
DeepSeek-V4 Pro (1.6T MoE) automatically caches repeated 64-token prompt prefixes on NVMe storage at $0.07/1M input tokens (50% off $0.14 base) with zero code changes required, plus off-peak UTC scheduling discounts.
In Etuki October 2026 FinOps telemetry comparing DeepSeek V4 1 Flash 1017 (API ID: deepseek/deepseek-v4.1-flash-1017) vs DeepSeek V3 1 Terminus (API ID: deepseek/deepseek-v3.1-terminus), DeepSeek V4 1 Flash 1017 offers lower standard input pricing at $0.14/1M tokens ($0.28/1M output), while DeepSeek V4 1 Flash 1017 leads in cached prefix economics at $0.014/1M tokens (75% discount). DeepSeek V4 1 Flash 1017 achieves a 0ms faster P90 time-to-first-token latency (270ms vs 270ms).
Automatic disk-KV caching cuts repeated prompt input costs by 90% ($0.014/1M) with zero manual configuration.
Automatic disk-KV caching cuts repeated prompt input costs by 90% ($0.014/1M) with zero manual configuration.
| Specification / FinOps Dimension | DeepSeek V4 1 Flash 1017 | DeepSeek V3 1 Terminus | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | deepseek/deepseek-v4.1-flash-1017 | deepseek/deepseek-v3.1-terminus | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.14 / $0.28 | $0.14 / $0.28 | DeepSeek V4 1 Flash 1017 |
| Cache Read Price (per 1M) | $0.014/1M (75% Off) | $0.014/1M (75% Off) | DeepSeek V4 1 Flash 1017 |
| Context Window / Max Output | 1000K In / 128K Out | 1000K In / 128K Out | DeepSeek V4 1 Flash 1017 |
| P90 First-Token / Edge Latency | 270ms | 270ms | DeepSeek V4 1 Flash 1017 (-0ms) |
DeepSeek V4 1 Flash 1017 delivers frontier MoE coding and reasoning performance with automatic on-disk KV prefix caching (90% input discount).
DeepSeek V3 1 Terminus delivers frontier MoE coding and reasoning performance with automatic on-disk KV prefix caching (90% input discount).
Real-Time Stack Cost & Hidden-Fee Simulator (MAU / Token / Egress / GMV)
Calibrated with Reddit r/FinOps & r/devops telemetry: Includes Context Caching, Bandwidth Egress, and MoR Tax
☀️Switch from DeepSeek V4 1 Flash 1017 to DeepSeek V3 1 Terminus
DeepSeek V3 1 Terminus delivers frontier MoE coding and reasoning performance with automatic on-disk KV prefix caching (90% input discount). Verified P90 latency of 270ms.