Google: Gemini 2.5 Flash vs Tencent: Hy4 preview: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Google: Gemini 2.5 Flash (google/gemini-2.5-flash) vs Tencent: Hy4 preview (tencent/hy4-preview). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Google: Gemini 2.5 Flash (google/gemini-2.5-flash) — Google AI Startup Credits ($350K) & 50% 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.
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 $0.417/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing Google: Gemini 2.5 Flash (API ID: google/gemini-2.5-flash) vs Tencent: Hy4 preview (API ID: tencent/hy4-preview), Google: Gemini 2.5 Flash offers lower standard input pricing at $0.3/1M tokens ($2.5/1M output), while Google: Gemini 2.5 Flash leads in cached prefix economics at $0.15/1M tokens (50% discount). Google: Gemini 2.5 Flash 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 | Google: Gemini 2.5 Flash | Tencent: Hy4 preview | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | google/gemini-2.5-flash | tencent/hy4-preview | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.3 / $2.5 | $0.834 / $2.501 | Google: Gemini 2.5 Flash |
| Cache Read Price (per 1M) | $0.15/1M (50% Off) | $0.417/1M (50% Off) | Google: Gemini 2.5 Flash |
| Context Window / Max Output | 1024K In / 64K Out | 1024K In / 63K Out | Google: Gemini 2.5 Flash |
| P90 First-Token / Edge Latency | 280ms | 280ms | Google: Gemini 2.5 Flash (-0ms) |
Gemini 2.5 Flash is Google's state-of-the-art workhorse model, specifically designed for advanced reasoning, coding, mathematics, and scientific tasks. It includes built-in "thinki
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 Google: Gemini 2.5 Flash 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.