Z.ai: GLM 4.5 vs OpenAI: o1-pro: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Z.ai: GLM 4.5 (z-ai/glm-4.5) vs OpenAI: o1-pro (openai/o1-pro). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Z.ai: GLM 4.5 (z-ai/glm-4.5) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Z.ai: GLM 4.5: 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: o1-pro (openai/o1-pro) 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 4.5 (API ID: z-ai/glm-4.5) vs OpenAI: o1-pro (API ID: openai/o1-pro), Z.ai: GLM 4.5 offers lower standard input pricing at $0.6/1M tokens ($2.2/1M output), while Z.ai: GLM 4.5 leads in cached prefix economics at $0.3/1M tokens (50% discount). Z.ai: GLM 4.5 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 4.5 | OpenAI: o1-pro | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | z-ai/glm-4.5 | openai/o1-pro | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.6 / $2.2 | $150 / $600 | Z.ai: GLM 4.5 |
| Cache Read Price (per 1M) | $0.3/1M (50% Off) | $75/1M (50% Off) | Z.ai: GLM 4.5 |
| Context Window / Max Output | 128K In / 96K Out | 195K In / 98K Out | OpenAI: o1-pro |
| P90 First-Token / Edge Latency | 280ms | 280ms | Z.ai: GLM 4.5 (-0ms) |
GLM-4.5 is our latest flagship foundation model, purpose-built for agent-based applications. It leverages a Mixture-of-Experts (MoE) architecture and supports a context length of u
The o1 series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o1-pro model uses more compute to think harder and pr
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 4.5 to OpenAI: o1-pro
The o1 series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o1-pro model uses more compute to think harder and pr Verified P90 latency of 280ms.