Z.ai: GLM 5.1 vs Google: Nano Banana Pro (Gemini 3 Pro Image): Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Z.ai: GLM 5.1 (z-ai/glm-5.1) vs Google: Nano Banana Pro (Gemini 3 Pro Image) (google/gemini-3-pro-image). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Z.ai: GLM 5.1 (z-ai/glm-5.1) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Z.ai: GLM 5.1: Activate ephemeral prefix caching to slash input costs by 50% (down to $0.483/1M) or route via asynchronous Batch API for 50% off standard token rates.
Google: Nano Banana Pro (Gemini 3 Pro Image) (google/gemini-3-pro-image) — 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.
In Etuki October 2026 FinOps telemetry comparing Z.ai: GLM 5.1 (API ID: z-ai/glm-5.1) vs Google: Nano Banana Pro (Gemini 3 Pro Image) (API ID: google/gemini-3-pro-image), Z.ai: GLM 5.1 offers lower standard input pricing at $0.966/1M tokens ($3.036/1M output), while Z.ai: GLM 5.1 leads in cached prefix economics at $0.483/1M tokens (50% discount). Z.ai: GLM 5.1 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 | Z.ai: GLM 5.1 | Google: Nano Banana Pro (Gemini 3 Pro Image) | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | z-ai/glm-5.1 | google/gemini-3-pro-image | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.966 / $3.036 | $2 / $12 | Z.ai: GLM 5.1 |
| Cache Read Price (per 1M) | $0.483/1M (50% Off) | $1/1M (50% Off) | Z.ai: GLM 5.1 |
| Context Window / Max Output | 200K In / 125K Out | 128K In / 32K Out | Z.ai: GLM 5.1 |
| P90 First-Token / Edge Latency | 280ms | 280ms | Z.ai: GLM 5.1 (-0ms) |
GLM-5.1 delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks. Unlike previous models built around minute-level interaction
Nano Banana Pro is Google’s most advanced image-generation and editing model, built on Gemini 3 Pro. It extends the original Nano Banana with significantly improved multimodal reas
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 Z.ai: GLM 5.1 to Google: Nano Banana Pro (Gemini 3 Pro Image)
Nano Banana Pro is Google’s most advanced image-generation and editing model, built on Gemini 3 Pro. It extends the original Nano Banana with significantly improved multimodal reas Verified P90 latency of 280ms.