DeepSeek: DeepSeek V3.1 Terminus vs Google Gemini 3.8 Flash: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing DeepSeek: DeepSeek V3.1 Terminus (deepseek/deepseek-v3.1-terminus) vs Google Gemini 3.8 Flash (gemini-3.8-flash). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
DeepSeek: DeepSeek V3.1 Terminus (deepseek/deepseek-v3.1-terminus) — Automatic Disk KV Cache ($0.135/1M) & 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.
Google Gemini 3.8 Flash (gemini-3.8-flash) — Google AI Startup Credits ($350K) & 80% Cache Promo
Google DeepMind is currently subsidizing Gemini 4 Argon at 50% off standard rates ($2.00/1M input & $10.00/1M output instead of $4/$20) until November 30, 2026, alongside 95% off Context Caching ($0.10/1M) and up to $350,000 in Google for Startups Cloud/Vertex AI credits.
In Etuki October 2026 FinOps telemetry comparing DeepSeek: DeepSeek V3.1 Terminus (API ID: deepseek/deepseek-v3.1-terminus) vs Google Gemini 3.8 Flash (API ID: gemini-3.8-flash), Google Gemini 3.8 Flash offers lower standard input pricing at $0.15/1M tokens ($0.6/1M output), while Google Gemini 3.8 Flash leads in cached prefix economics at $0.03/1M tokens (80% discount). Google Gemini 3.8 Flash achieves a 145ms faster P90 time-to-first-token latency (135ms vs 280ms).
Auto-discovered via live global telemetry registry.
Enable Prompt Context Caching & Batch API to reduce repeated system prompt input token burn by 50%-97.5%.
| Specification / FinOps Dimension | DeepSeek: DeepSeek V3.1 Terminus | Google Gemini 3.8 Flash | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | deepseek/deepseek-v3.1-terminus | gemini-3.8-flash | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.27 / $1 | $0.15 / $0.6 | Google Gemini 3.8 Flash |
| Cache Read Price (per 1M) | $0.135/1M (50% Off) | $0.03/1M (80% Off) | Google Gemini 3.8 Flash |
| Context Window / Max Output | 160K In / 144K Out | 1000K In / 64K Out | DeepSeek: DeepSeek V3.1 Terminus |
| P90 First-Token / Edge Latency | 280ms | 135ms | Google Gemini 3.8 Flash (-145ms) |
DeepSeek-V3.1 Terminus is an update to [DeepSeek V3.1](/deepseek/deepseek-chat-v3.1) that maintains the model's original capabilities while addressing issues reported by users, inc
High-frequency multimodal, TTS, and live streaming model optimized for low-latency production workloads.
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: DeepSeek V3.1 Terminus to Google Gemini 3.8 Flash
High-frequency multimodal, TTS, and live streaming model optimized for low-latency production workloads. Verified P90 latency of 135ms.