SpaceXAI: Grok Build 0.1 vs OpenAI: GPT-6 Luna Pro: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing SpaceXAI: Grok Build 0.1 (x-ai/grok-build-0.1) vs OpenAI: GPT-6 Luna Pro (openai/gpt-6-luna-pro). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
SpaceXAI: Grok Build 0.1 (x-ai/grok-build-0.1) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for SpaceXAI: Grok Build 0.1: Activate ephemeral prefix caching to slash input costs by 50% (down to $0.5/1M) or route via asynchronous Batch API for 50% off standard token rates.
OpenAI: GPT-6 Luna Pro (openai/gpt-6-luna-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 SpaceXAI: Grok Build 0.1 (API ID: x-ai/grok-build-0.1) vs OpenAI: GPT-6 Luna Pro (API ID: openai/gpt-6-luna-pro), OpenAI: GPT-6 Luna Pro offers lower standard input pricing at $0.1/1M tokens ($0.5/1M output), while OpenAI: GPT-6 Luna Pro leads in cached prefix economics at $0.05/1M tokens (50% discount). SpaceXAI: Grok Build 0.1 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 | SpaceXAI: Grok Build 0.1 | OpenAI: GPT-6 Luna Pro | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | x-ai/grok-build-0.1 | openai/gpt-6-luna-pro | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $1 / $2 | $0.1 / $0.5 | OpenAI: GPT-6 Luna Pro |
| Cache Read Price (per 1M) | $0.5/1M (50% Off) | $0.05/1M (50% Off) | OpenAI: GPT-6 Luna Pro |
| Context Window / Max Output | 250K In / 225K Out | 1025K In / 125K Out | SpaceXAI: Grok Build 0.1 |
| P90 First-Token / Edge Latency | 280ms | 280ms | SpaceXAI: Grok Build 0.1 (-0ms) |
Grok Build 0.1 is SpaceXAI’s fast coding model trained specifically for agentic software engineering workflows. It supports text and image inputs with text output, and is optimized
GPT-6 Luna Pro is the same underlying model as [GPT-6 Luna](https://openrouter.ai/openai/gpt-6-luna), served with `reasoning.mode` set to `pro` for higher-quality responses on comp
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 SpaceXAI: Grok Build 0.1 to OpenAI: GPT-6 Luna Pro
GPT-6 Luna Pro is the same underlying model as [GPT-6 Luna](https://openrouter.ai/openai/gpt-6-luna), served with `reasoning.mode` set to `pro` for higher-quality responses on comp Verified P90 latency of 280ms.