SpaceXAI: Grok 4.5 vs Free Models Router: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing SpaceXAI: Grok 4.5 (x-ai/grok-4.5) vs Free Models Router (openrouter/free). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
SpaceXAI: Grok 4.5 (x-ai/grok-4.5) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for SpaceXAI: Grok 4.5: 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.
Free Models Router (openrouter/free) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Free Models Router: Activate ephemeral prefix caching to slash input costs by 50% (down to $0/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing SpaceXAI: Grok 4.5 (API ID: x-ai/grok-4.5) vs Free Models Router (API ID: openrouter/free), Free Models Router offers lower standard input pricing at $0/1M tokens ($0/1M output), while Free Models Router leads in cached prefix economics at $0/1M tokens (50% discount). SpaceXAI: Grok 4.5 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 4.5 | Free Models Router | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | x-ai/grok-4.5 | openrouter/free | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $2 / $6 | $0 / $0 | Free Models Router |
| Cache Read Price (per 1M) | $1/1M (50% Off) | $0/1M (50% Off) | Free Models Router |
| Context Window / Max Output | 488K In / 439K Out | 195K In / 64K Out | SpaceXAI: Grok 4.5 |
| P90 First-Token / Edge Latency | 280ms | 280ms | SpaceXAI: Grok 4.5 (-0ms) |
Grok 4.5 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM.
The simplest way to get free inference. openrouter/free is a router that selects free models at random from the models available on OpenRouter. The router smartly filters for model
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 4.5 to Free Models Router
The simplest way to get free inference. openrouter/free is a router that selects free models at random from the models available on OpenRouter. The router smartly filters for model Verified P90 latency of 280ms.