Z.ai: GLM 4.5V vs OpenAI: GPT-5.4 Mini: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Z.ai: GLM 4.5V (z-ai/glm-4.5v) vs OpenAI: GPT-5.4 Mini (openai/gpt-5.4-mini). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Z.ai: GLM 4.5V (z-ai/glm-4.5v) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Z.ai: GLM 4.5V: Activate ephemeral prefix caching to slash input costs by 50% (down to $0.3/1M) or route via asynchronous Batch API for 50% off standard token rates.
OpenAI: GPT-5.4 Mini (openai/gpt-5.4-mini) 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 Z.ai: GLM 4.5V (API ID: z-ai/glm-4.5v) vs OpenAI: GPT-5.4 Mini (API ID: openai/gpt-5.4-mini), Z.ai: GLM 4.5V offers lower standard input pricing at $0.6/1M tokens ($1.8/1M output), while Z.ai: GLM 4.5V leads in cached prefix economics at $0.3/1M tokens (50% discount). Z.ai: GLM 4.5V 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 4.5V | OpenAI: GPT-5.4 Mini | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | z-ai/glm-4.5v | openai/gpt-5.4-mini | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.6 / $1.8 | $0.75 / $4.5 | Z.ai: GLM 4.5V |
| Cache Read Price (per 1M) | $0.3/1M (50% Off) | $0.375/1M (50% Off) | Z.ai: GLM 4.5V |
| Context Window / Max Output | 64K In / 16K Out | 391K In / 125K Out | OpenAI: GPT-5.4 Mini |
| P90 First-Token / Edge Latency | 280ms | 280ms | Z.ai: GLM 4.5V (-0ms) |
GLM-4.5V is a vision-language foundation model for multimodal agent applications. Built on a Mixture-of-Experts (MoE) architecture with 106B parameters and 12B activated parameters
GPT-5.4 mini brings the core capabilities of GPT-5.4 to a faster, more efficient model optimized for high-throughput workloads. It supports text and image inputs with strong perfor
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 4.5V to OpenAI: GPT-5.4 Mini
GPT-5.4 mini brings the core capabilities of GPT-5.4 to a faster, more efficient model optimized for high-throughput workloads. It supports text and image inputs with strong perfor Verified P90 latency of 280ms.