SpaceXAI: Grok 4.20 vs AionLabs: Aion-RP 1.0 (8B): Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing SpaceXAI: Grok 4.20 (x-ai/grok-4.20) vs AionLabs: Aion-RP 1.0 (8B) (aion-labs/aion-rp-llama-3.1-8b). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
SpaceXAI: Grok 4.20 (x-ai/grok-4.20) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for SpaceXAI: Grok 4.20: Activate ephemeral prefix caching to slash input costs by 50% (down to $0.625/1M) or route via asynchronous Batch API for 50% off standard token rates.
AionLabs: Aion-RP 1.0 (8B) (aion-labs/aion-rp-llama-3.1-8b) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for AionLabs: Aion-RP 1.0 (8B): Activate ephemeral prefix caching to slash input costs by 50% (down to $0.4/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing SpaceXAI: Grok 4.20 (API ID: x-ai/grok-4.20) vs AionLabs: Aion-RP 1.0 (8B) (API ID: aion-labs/aion-rp-llama-3.1-8b), AionLabs: Aion-RP 1.0 (8B) offers lower standard input pricing at $0.8/1M tokens ($1.6/1M output), while AionLabs: Aion-RP 1.0 (8B) leads in cached prefix economics at $0.4/1M tokens (50% discount). SpaceXAI: Grok 4.20 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 4.20 | AionLabs: Aion-RP 1.0 (8B) | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | x-ai/grok-4.20 | aion-labs/aion-rp-llama-3.1-8b | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $1.25 / $2.5 | $0.8 / $1.6 | AionLabs: Aion-RP 1.0 (8B) |
| Cache Read Price (per 1M) | $0.625/1M (50% Off) | $0.4/1M (50% Off) | AionLabs: Aion-RP 1.0 (8B) |
| Context Window / Max Output | 1953K In / 1758K Out | 32K In / 29K Out | SpaceXAI: Grok 4.20 |
| P90 First-Token / Edge Latency | 280ms | 280ms | SpaceXAI: Grok 4.20 (-0ms) |
Grok 4.20 is a reasoning model from SpaceXAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict
Aion-RP-Llama-3.1-8B ranks the highest in the character evaluation portion of the RPBench-Auto benchmark, a roleplaying-specific variant of Arena-Hard-Auto, where LLMs evaluate eac
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 4.20 to AionLabs: Aion-RP 1.0 (8B)
Aion-RP-Llama-3.1-8B ranks the highest in the character evaluation portion of the RPBench-Auto benchmark, a roleplaying-specific variant of Arena-Hard-Auto, where LLMs evaluate eac Verified P90 latency of 280ms.