DeepSeek: DeepSeek V3 vs OpenAI GPT-5.6 Terra: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing DeepSeek: DeepSeek V3 (deepseek/deepseek-chat) vs OpenAI GPT-5.6 Terra (gpt-5.6-terra). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
DeepSeek: DeepSeek V3 (deepseek/deepseek-chat) — Automatic Disk KV Cache ($0.16/1M) & 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.
OpenAI GPT-5.6 Terra (gpt-5.6-terra) Startup Credits & Batch API 50% Off Promo
OpenAI GPT-6.1 Sol ($2/$10 base rate) qualifies for immediate 75% automatic prefix caching ($0.50/1M), 50% off 24-hour Batch API completions ($1/$5), and up to $150,000 in OpenAI/Azure Foundry credits via Microsoft for Startups Founders Hub (no VC funding required for initial tiers).
In Etuki October 2026 FinOps telemetry comparing DeepSeek: DeepSeek V3 (API ID: deepseek/deepseek-chat) vs OpenAI GPT-5.6 Terra (API ID: gpt-5.6-terra), DeepSeek: DeepSeek V3 offers lower standard input pricing at $0.32/1M tokens ($0.89/1M output), while DeepSeek: DeepSeek V3 leads in cached prefix economics at $0.16/1M tokens (50% discount). DeepSeek: DeepSeek V3 achieves a 10ms faster P90 time-to-first-token latency (280ms vs 290ms).
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 | OpenAI GPT-5.6 Terra | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | deepseek/deepseek-chat | gpt-5.6-terra | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.32 / $0.89 | $2 / $12 | DeepSeek: DeepSeek V3 |
| Cache Read Price (per 1M) | $0.16/1M (50% Off) | $1/1M (50% Off) | DeepSeek: DeepSeek V3 |
| Context Window / Max Output | 160K In / 16K Out | 400K In / 128K Out | OpenAI GPT-5.6 Terra |
| P90 First-Token / Edge Latency | 280ms | 290ms | DeepSeek: DeepSeek V3 (-10ms) |
DeepSeek-V3 is the latest model from the DeepSeek team, building upon the instruction following and coding abilities of the previous versions. Pre-trained on nearly 15 trillion tok
Balanced enterprise general-purpose model in the GPT-5.6 family with 1M context window.
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 to OpenAI GPT-5.6 Terra
Balanced enterprise general-purpose model in the GPT-5.6 family with 1M context window. Verified P90 latency of 290ms.