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.
Proof of change
LiveKit's pricing pages, as we captured them on two dates.
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- These prices come from our capture alone — they were not confirmed against an independent second source.
Both images are our own captures, taken on the dates shown. The pixels are unmodified — nothing is retouched, and where a region is highlighted the marker is drawn over the image, not into it. Open either capture to see it at full resolution.
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).