Tencent: Hy4 preview vs OpenAI: GPT-5.4 Pro (batch): Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Tencent: Hy4 preview (tencent/hy4-preview) vs OpenAI: GPT-5.4 Pro (batch) (openai/gpt-5.4-pro:batch). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
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.
OpenAI: GPT-5.4 Pro (batch) (openai/gpt-5.4-pro:batch) 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 Tencent: Hy4 preview (API ID: tencent/hy4-preview) vs OpenAI: GPT-5.4 Pro (batch) (API ID: openai/gpt-5.4-pro:batch), 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). Tencent: Hy4 preview 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 | Tencent: Hy4 preview | OpenAI: GPT-5.4 Pro (batch) | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | tencent/hy4-preview | openai/gpt-5.4-pro:batch | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.7506 / $2.2509 | $15 / $90 | Tencent: Hy4 preview |
| Cache Read Price (per 1M) | $0.3753/1M (50% Off) | $7.5/1M (50% Off) | Tencent: Hy4 preview |
| Context Window / Max Output | 1024K In / 63K Out | 1025K In / 125K Out | OpenAI: GPT-5.4 Pro (batch) |
| P90 First-Token / Edge Latency | 280ms | 280ms | Tencent: Hy4 preview (-0ms) |
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
GPT-5.4 Pro is OpenAI's most advanced model, building on GPT-5.4's unified architecture with enhanced reasoning capabilities for complex, high-stakes tasks. It features a 1M+ token
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 Tencent: Hy4 preview to OpenAI: GPT-5.4 Pro (batch)
GPT-5.4 Pro is OpenAI's most advanced model, building on GPT-5.4's unified architecture with enhanced reasoning capabilities for complex, high-stakes tasks. It features a 1M+ token Verified P90 latency of 280ms.