OpenAI: GPT-5.2 Chat vs Tencent: Hy4 preview: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing OpenAI: GPT-5.2 Chat (openai/gpt-5.2-chat) vs Tencent: Hy4 preview (tencent/hy4-preview). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
OpenAI: GPT-5.2 Chat (openai/gpt-5.2-chat) 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).
Tencent: Hy4 preview (tencent/hy4-preview) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Tencent: Hy4 preview: Activate ephemeral prefix caching to slash input costs by 50% (down to $0.3753/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing OpenAI: GPT-5.2 Chat (API ID: openai/gpt-5.2-chat) vs Tencent: Hy4 preview (API ID: tencent/hy4-preview), Tencent: Hy4 preview offers lower standard input pricing at $0.7506/1M tokens ($2.2509/1M output), while Tencent: Hy4 preview leads in cached prefix economics at $0.3753/1M tokens (50% discount). OpenAI: GPT-5.2 Chat 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-5.2 Chat | Tencent: Hy4 preview | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | openai/gpt-5.2-chat | tencent/hy4-preview | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $1.75 / $14 | $0.7506 / $2.2509 | Tencent: Hy4 preview |
| Cache Read Price (per 1M) | $0.875/1M (50% Off) | $0.3753/1M (50% Off) | Tencent: Hy4 preview |
| Context Window / Max Output | 125K In / 31K Out | 1024K In / 63K Out | Tencent: Hy4 preview |
| P90 First-Token / Edge Latency | 280ms | 280ms | OpenAI: GPT-5.2 Chat (-0ms) |
GPT-5.2 Chat (AKA Instant) is the fast, lightweight member of the 5.2 family, optimized for low-latency chat while retaining strong general intelligence. It uses adaptive reasoning
Tencent: Hy4 preview is a mixture-of-experts model from Tencent, with 49B active parameters out of 770B total. It is designed for coding agents, complex tool-use workflows, and pro
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-5.2 Chat to Tencent: Hy4 preview
Tencent: Hy4 preview is a mixture-of-experts model from Tencent, with 49B active parameters out of 770B total. It is designed for coding agents, complex tool-use workflows, and pro Verified P90 latency of 280ms.