SpaceXAI: Grok 4.6 vs Upstage: Solar Pro 3: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing SpaceXAI: Grok 4.6 (x-ai/grok-4.6) vs Upstage: Solar Pro 3 (upstage/solar-pro-3). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
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.
Upstage: Solar Pro 3 (upstage/solar-pro-3) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Upstage: Solar Pro 3: Activate ephemeral prefix caching to slash input costs by 50% (down to $0.075/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing SpaceXAI: Grok 4.6 (API ID: x-ai/grok-4.6) vs Upstage: Solar Pro 3 (API ID: upstage/solar-pro-3), Upstage: Solar Pro 3 offers lower standard input pricing at $0.15/1M tokens ($0.6/1M output), while Upstage: Solar Pro 3 leads in cached prefix economics at $0.075/1M tokens (50% discount). SpaceXAI: Grok 4.6 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 4.6 | Upstage: Solar Pro 3 | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | x-ai/grok-4.6 | upstage/solar-pro-3 | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $2 / $6 | $0.15 / $0.6 | Upstage: Solar Pro 3 |
| Cache Read Price (per 1M) | $1/1M (50% Off) | $0.075/1M (50% Off) | Upstage: Solar Pro 3 |
| Context Window / Max Output | 488K In / 439K Out | 128K In / 115K Out | SpaceXAI: Grok 4.6 |
| P90 First-Token / Edge Latency | 280ms | 280ms | SpaceXAI: Grok 4.6 (-0ms) |
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).
Solar Pro 3 is Upstage's powerful Mixture-of-Experts (MoE) language model. With 102B total parameters and 12B active parameters per forward pass, it delivers exceptional performanc
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 4.6 to Upstage: Solar Pro 3
Solar Pro 3 is Upstage's powerful Mixture-of-Experts (MoE) language model. With 102B total parameters and 12B active parameters per forward pass, it delivers exceptional performanc Verified P90 latency of 280ms.