OpenAI: GPT Luna Latest vs SpaceXAI: Grok 4.6: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing OpenAI: GPT Luna Latest (~openai/gpt-luna-latest) vs SpaceXAI: Grok 4.6 (x-ai/grok-4.6). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
OpenAI: GPT Luna Latest (~openai/gpt-luna-latest) 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).
SpaceXAI: Grok 4.6 (x-ai/grok-4.6) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for SpaceXAI: Grok 4.6: Activate ephemeral prefix caching to slash input costs by 50% (down to $1/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing OpenAI: GPT Luna Latest (API ID: ~openai/gpt-luna-latest) vs SpaceXAI: Grok 4.6 (API ID: x-ai/grok-4.6), OpenAI: GPT Luna Latest offers lower standard input pricing at $0.1/1M tokens ($0.5/1M output), while OpenAI: GPT Luna Latest leads in cached prefix economics at $0.05/1M tokens (50% discount). OpenAI: GPT Luna Latest 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 Luna Latest | SpaceXAI: Grok 4.6 | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | ~openai/gpt-luna-latest | x-ai/grok-4.6 | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.1 / $0.5 | $2 / $6 | OpenAI: GPT Luna Latest |
| Cache Read Price (per 1M) | $0.05/1M (50% Off) | $1/1M (50% Off) | OpenAI: GPT Luna Latest |
| Context Window / Max Output | 1025K In / 125K Out | 488K In / 439K Out | SpaceXAI: Grok 4.6 |
| P90 First-Token / Edge Latency | 280ms | 280ms | OpenAI: GPT Luna Latest (-0ms) |
This model always redirects to the latest model in the GPT Luna family.
Grok 4.6 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM. It is succeeded by [Grok 4.7](/x-ai/grok-4.7).
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 Luna Latest to SpaceXAI: Grok 4.6
Grok 4.6 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM. It is succeeded by [Grok 4.7](/x-ai/grok-4.7). Verified P90 latency of 280ms.