OpenAI: GPT-5 Pro vs AionLabs: Aion 3.5: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing OpenAI: GPT-5 Pro (openai/gpt-5-pro) vs AionLabs: Aion 3.5 (aion-labs/aion-3.5). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
OpenAI: GPT-5 Pro (openai/gpt-5-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).
AionLabs: Aion 3.5 (aion-labs/aion-3.5) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for AionLabs: Aion 3.5: Activate ephemeral prefix caching to slash input costs by 50% (down to $1.5/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing OpenAI: GPT-5 Pro (API ID: openai/gpt-5-pro) vs AionLabs: Aion 3.5 (API ID: aion-labs/aion-3.5), AionLabs: Aion 3.5 offers lower standard input pricing at $3/1M tokens ($6/1M output), while AionLabs: Aion 3.5 leads in cached prefix economics at $1.5/1M tokens (50% discount). OpenAI: GPT-5 Pro 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 | OpenAI: GPT-5 Pro | AionLabs: Aion 3.5 | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | openai/gpt-5-pro | aion-labs/aion-3.5 | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $15 / $120 | $3 / $6 | AionLabs: Aion 3.5 |
| Cache Read Price (per 1M) | $7.5/1M (50% Off) | $1.5/1M (50% Off) | AionLabs: Aion 3.5 |
| Context Window / Max Output | 391K In / 125K Out | 256K In / 32K Out | OpenAI: GPT-5 Pro |
| P90 First-Token / Edge Latency | 280ms | 280ms | OpenAI: GPT-5 Pro (-0ms) |
GPT-5 Pro is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step
Aion 3.5 is a multi-model roleplaying and storytelling system from AionLabs, built on the GLM family of models. It uses a collaborative generation process in which multiple special
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 OpenAI: GPT-5 Pro to AionLabs: Aion 3.5
Aion 3.5 is a multi-model roleplaying and storytelling system from AionLabs, built on the GLM family of models. It uses a collaborative generation process in which multiple special Verified P90 latency of 280ms.