Openrouter Verified Endpoint 561 vs OpenAI: GPT-5.1: Live Promos, Pricing, Hidden Fees & Latency
Openrouter Verified Endpoint 561 (openrouter-verified-endpoint-561) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Openrouter Verified Endpoint 561: 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.
OpenAI: GPT-5.1 (openai/gpt-5.1) Startup Credits & Batch API 50% Off Promo
OpenAI GPT-6.1 Sol ($2/$10 base rate) qualifies for immediate 95% automatic prefix caching ($0.10/1M), 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 Openrouter Verified Endpoint 561 (API ID: openrouter-verified-endpoint-561) vs OpenAI: GPT-5.1 (API ID: openai/gpt-5.1), Openrouter Verified Endpoint 561 offers lower standard input pricing at $0.8/1M tokens ($3.2/1M output), while OpenAI: GPT-5.1 leads in cached prefix economics at $0.125/1M tokens (50% discount). Openrouter Verified Endpoint 561 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 561 | OpenAI: GPT-5.1 | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | openrouter-verified-endpoint-561 | openai/gpt-5.1 | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.8 / $3.2 | $1.25 / $10 | Openrouter Verified Endpoint 561 |
| Cache Read Price (per 1M) | $0.2/1M (95% Off) | $0.125/1M (50% Off) | OpenAI: GPT-5.1 |
| Context Window / Max Output | 1050K In / 128K Out | 391K In / 125K Out | Openrouter Verified Endpoint 561 |
| P90 First-Token / Edge Latency | 145ms | 280ms | Openrouter Verified Endpoint 561 (-135ms) |
Openrouter Verified Endpoint 561 production API endpoint verified by Etuki FinOps Telemetry with automated prefix caching and multi-region fallback routing.
GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style
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 561 to OpenAI: GPT-5.1
GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style Verified P90 latency of 280ms.