LiveKit Inference drops Grok 4.1 Fast SKUs, swaps Rime Arcana for Gradium TTS
LiveKit's per-minute inference catalog lost xAI's Grok 4.1 Fast and Grok 4.1 Fast Reasoning LLM SKUs and replaced Rime's Arcana voice with a new Gradium TTS provider; all LiveKit Cloud plan prices (Build free, Ship $50, Scale $500, Enterprise custom) held unchanged.
LLM catalog included xAI Grok 4.1 Fast and Grok 4.1 Fast Reasoning (both $0.0007/min, $0.200 input / $0.500 output per million tokens, no cached-input rate). TTS catalog's Rime lineup included an Arcana voice at $40.00/M characters on Build/Ship and $30.00/M on Scale; no Gradium provider was listed.
LLM catalog no longer lists either Grok 4.1 Fast SKU. TTS catalog drops Rime's Arcana voice and adds a new provider, Gradium (Gradium TTS), at $48.00/M characters on Build/Ship and $36.00/M on Scale.
LiveKit reshuffled two corners of its LiveKit Inference catalog — the per-minute LLM/STT/TTS service billed against each Cloud plan’s credit allotment — without touching any Cloud plan price. On the LLM side, xAI’s Grok 4.1 Fast and Grok 4.1 Fast Reasoning (both $0.0007/min) were both delisted, trimming xAI’s published lineup from seven models to five (Grok 4.20, Grok 4.20 Reasoning, Grok 4.20 Multi-Agent, Grok 4.3 and Grok 4.5 remain).
On the TTS side, Rime’s Arcana voice ($40.00/$30.00 per million characters on Build-Ship/Scale) was removed and a brand-new provider, Gradium, joined the catalog with a single Gradium TTS voice priced higher at $48.00/M characters on Build/Ship and $36.00/M on Scale. This is the sixth LiveKit Inference catalog update since 2026-07-21, continuing LiveKit’s pattern of restocking its model catalog roughly weekly without moving Cloud plan pricing (Build free, Ship $50/mo, Scale $500/mo, Enterprise custom).
Plan structure holds (Build free / Ship $50 / Scale $500 / Enterprise custom). LiveKit Inference delists xAI's Grok 4.1 Fast and Grok 4.1 Fast Reasoning LLM SKUs (each formerly ~$0.0007/min), trimming xAI's published lineup to five models, and swaps Rime's Arcana TTS voice for a new provider, Gradium, at $0.0288/min (Build/Ship) / $0.0216/min (Scale).