xAI

What you can manage

• Models — every model your key can call, folded into one list: chat and vision models from /v1/language-models, image generation models, and embedding models. Each carries its full price sheet, including the cached-prompt and long-context rates.
• Voices — xAI’s built-in voices and any custom voices your team has cloned, in a single list. Custom voices are editable and deletable; built-ins are read-only.
• Files — anything uploaded to xAI storage, with size, purpose and expiry (delete).
• Batches — batch inference jobs, with per-request pending/succeeded/errored/cancelled counts.
• API keys — full lifecycle on your team’s keys: create with model and endpoint scopes plus QPS/QPM/TPM limits, rename, enable/disable, rotate the secret, delete.
• Audit events — the team audit log, newest first, paged until it runs out or the 4,000 most recent events are in. A longer log ends with a row saying older events were left behind, so nothing goes missing quietly.

Credentials

xAI splits its API across two hosts with two different keys, and this plugin asks for both.

API Key (required) — console.x.ai → API Keys. This is the xai-… key for https://api.x.ai. Models, voices, files, batches and the whole Speech tab run on it.

Management Key (optional) — console.x.ai → Settings → Management Keys. Your account needs the Management Keys read + write permission. This is a different key for a different host, https://management-api.x.ai.

Without the management key, everything on the inference key keeps working. What you lose is:

• the API keys list (it comes back empty rather than erroring),
• the audit log,
• cost collection and the spend chart — the account will report that billing needs a management key, with a link to the page to create one.

You never have to find your team id. The plugin discovers it from GET /auth/management-keys/validation when a management key is present, and falls back to GET /v1/api-key otherwise.

The Speech tab

Open any voice — built-in or custom — and you get a Speech tab with both halves wired up. Models that declare audio modalities get the tab too.

• Synthesize posts to POST /v1/tts. The voice picker is filled from GET /v1/tts/voices plus your own custom voices, so the built-ins (Eve, Ara, Leo, Rex, Sal) and anything you have cloned appear side by side. Opening a voice preselects it. The language picker covers every BCP-47 code xAI documents, plus Auto-detect.
• Transcribe posts to POST /v1/stt with speaker diarization on, and returns word-level timings with per-word confidence.

Costs and metrics

With a management key attached, spend is collected from POST /v1/billing/teams/{team_id}/usage — a real analytics query, asked for as a daily USD sum grouped by line-item description. That gives you a per-service daily breakdown on the cost page, and a spend chart on each model’s Metrics tab.

Prepaid balance and invoices live on the same host if you need to reconcile against a statement.

Tips & limits

• Synthesis is capped at 15,000 characters per request, and the character counter enforces it before the call goes out.
• Text-to-speech returns JSON, not audio bytes. xAI wraps base64 audio in a JSON envelope alongside content_type and duration, unlike OpenAI and Groq. The plugin unwraps it; you just get a player. MP3 is requested explicitly so the clip plays in the browser.
• Speech tags work. [pause], [laugh], [breath] and wrapping styles like <whisper>, <slow> and <sing-song> are passed straight through to the model.
• Transcription accepts up to 500 MB upstream, but the app caps uploads at 25 MB. A test clip is a sentence or two; anything longer belongs in xAI’s own streaming endpoint.
• Your recording’s container is forwarded as-is. xAI auto-detects WAV, MP3, OGG, Opus, FLAC, AAC, MP4, M4A and MKV from the file header, so nothing is transcoded on the way out — whatever your browser recorded is what xAI receives.
• Model prices are in USD cents per 100 million units on the wire — tokens, generated images or search sources alike. The detail page converts them to dollars, per million tokens for the token rates and per item for the image and live-search rates, so you can compare at a glance.
• Rotating an API key is not instant-revoke. The old secret keeps working for 24 hours by default so in-flight deployments don’t break. The app confirms before rotating and says so.
• Custom voices are cloned from an audio clip, which the app doesn’t upload for you — create the voice in the xAI console or via POST /v1/custom-voices, then manage its metadata here.