Openrouter Verified Endpoint 481 vs Z.ai: GLM 4.5 Air: Live Promos, Pricing, Hidden Fees & Latency
Openrouter Verified Endpoint 481 (openrouter-verified-endpoint-481) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Openrouter Verified Endpoint 481: Activate ephemeral prefix caching to slash input costs by 95% (down to 0.2/1M) or route via asynchronous Batch API for 50% off standard token rates.
Z.ai: GLM 4.5 Air (z-ai/glm-4.5-air) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Z.ai: GLM 4.5 Air: Activate ephemeral prefix caching to slash input costs by 50% (down to 0.065/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing Openrouter Verified Endpoint 481 (API ID: openrouter-verified-endpoint-481) vs Z.ai: GLM 4.5 Air (API ID: z-ai/glm-4.5-air), Z.ai: GLM 4.5 Air offers lower standard input pricing at $0.13/1M tokens ($0.85/1M output), while Z.ai: GLM 4.5 Air leads in cached prefix economics at $0.065/1M tokens (50% discount). Openrouter Verified Endpoint 481 achieves a 135ms faster P90 time-to-first-token latency (145ms vs 280ms).
Route high-volume requests through Prompt Caching (75% off) and asynchronous Batch API (50% off) to prevent token burn spikes.
Auto-discovered via live global telemetry registry.
| Specification / FinOps Dimension | Openrouter Verified Endpoint 481 | Z.ai: GLM 4.5 Air | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | openrouter-verified-endpoint-481 | z-ai/glm-4.5-air | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.8 / $3.2 | $0.13 / $0.85 | Z.ai: GLM 4.5 Air |
| Cache Read Price (per 1M) | $0.2/1M (95% Off) | $0.065/1M (50% Off) | Z.ai: GLM 4.5 Air |
| Context Window / Max Output | 1050K In / 128K Out | 128K In / 96K Out | Openrouter Verified Endpoint 481 |
| P90 First-Token / Edge Latency | 145ms | 280ms | Openrouter Verified Endpoint 481 (-135ms) |
Openrouter Verified Endpoint 481 production API endpoint verified by Etuki FinOps Telemetry with automated prefix caching and multi-region fallback routing.
GLM-4.5-Air is the lightweight variant of our latest flagship model family, also purpose-built for agent-centric applications. Like GLM-4.5, it adopts the Mixture-of-Experts (MoE)
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 Openrouter Verified Endpoint 481 to Z.ai: GLM 4.5 Air
GLM-4.5-Air is the lightweight variant of our latest flagship model family, also purpose-built for agent-centric applications. Like GLM-4.5, it adopts the Mixture-of-Experts (MoE) Verified P90 latency of 280ms.