OpenAI: GPT-5.6 Luna vs OpenAI: GPT-5 Nano: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing OpenAI: GPT-5.6 Luna (openai/gpt-5.6-luna) vs OpenAI: GPT-5 Nano (openai/gpt-5-nano). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
OpenAI: GPT-5.6 Luna (openai/gpt-5.6-luna) 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).
OpenAI: GPT-5 Nano (openai/gpt-5-nano) 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 OpenAI: GPT-5.6 Luna (API ID: openai/gpt-5.6-luna) vs OpenAI: GPT-5 Nano (API ID: openai/gpt-5-nano), OpenAI: GPT-5 Nano offers lower standard input pricing at $0.05/1M tokens ($0.4/1M output), while OpenAI: GPT-5 Nano leads in cached prefix economics at $0.025/1M tokens (50% discount). OpenAI: GPT-5.6 Luna 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-5.6 Luna | OpenAI: GPT-5 Nano | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | openai/gpt-5.6-luna | openai/gpt-5-nano | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.2 / $1.2 | $0.05 / $0.4 | OpenAI: GPT-5 Nano |
| Cache Read Price (per 1M) | $0.1/1M (50% Off) | $0.025/1M (50% Off) | OpenAI: GPT-5 Nano |
| Context Window / Max Output | 1025K In / 125K Out | 391K In / 125K Out | OpenAI: GPT-5.6 Luna |
| P90 First-Token / Edge Latency | 280ms | 280ms | OpenAI: GPT-5.6 Luna (-0ms) |
GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic
GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasonin
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-5.6 Luna to OpenAI: GPT-5 Nano
GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasonin Verified P90 latency of 280ms.