OpenAI: GPT-4o vs DeepSeek: DeepSeek V4.1 Flash: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing OpenAI: GPT-4o (openai/gpt-4o) vs DeepSeek: DeepSeek V4.1 Flash (deepseek/deepseek-v4.1-flash). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
OpenAI: GPT-4o (openai/gpt-4o) 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).
DeepSeek: DeepSeek V4.1 Flash (deepseek/deepseek-v4.1-flash) — Automatic Disk KV Cache ($0.0119/1M) & 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 OpenAI: GPT-4o (API ID: openai/gpt-4o) vs DeepSeek: DeepSeek V4.1 Flash (API ID: deepseek/deepseek-v4.1-flash), DeepSeek: DeepSeek V4.1 Flash offers lower standard input pricing at $0.0238/1M tokens ($0.72/1M output), while DeepSeek: DeepSeek V4.1 Flash leads in cached prefix economics at $0.0119/1M tokens (50% discount). OpenAI: GPT-4o achieves a 0ms faster P90 time-to-first-token latency (280ms vs 280ms).
Auto-discovered via live global telemetry registry.
Auto-discovered via live global telemetry registry.
| Specification / FinOps Dimension | OpenAI: GPT-4o | DeepSeek: DeepSeek V4.1 Flash | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | openai/gpt-4o | deepseek/deepseek-v4.1-flash | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $2.5 / $10 | $0.0238 / $0.72 | DeepSeek: DeepSeek V4.1 Flash |
| Cache Read Price (per 1M) | $1.25/1M (50% Off) | $0.0119/1M (50% Off) | DeepSeek: DeepSeek V4.1 Flash |
| Context Window / Max Output | 125K In / 16K Out | 1024K In / 922K Out | DeepSeek: DeepSeek V4.1 Flash |
| P90 First-Token / Edge Latency | 280ms | 280ms | OpenAI: GPT-4o (-0ms) |
GPT-4o ("o" for "omni") is OpenAI's latest AI model, supporting both text and image inputs with text outputs. It maintains the intelligence level of [GPT-4 Turbo](/models/openai/gp
DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture. It activates 8B parameters o
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 OpenAI: GPT-4o to DeepSeek: DeepSeek V4.1 Flash
DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture. It activates 8B parameters o Verified P90 latency of 280ms.