xAI price history

1. Aug 12, 2026

   New model added: Grok 4.6 new listing

   Grok 4.6 began being tracked.

2. Jul 29, 2026

   Data correction: Grok 4.20 data correction

   Published $2.00/$6.00 was grok-4.5's price, not grok-4.20's. xAI's official per-model table (docs.x.ai/docs/pricing, receipt sha 8cea267d7b) lists Grok 4.20 at $1.25 in / $2.50 out (cached $0.20); grok-4.5 is the $2.00/$6.00 SKU. Our prior receipt anchored on developers/models, which renders only grok-4.5's hero price, so a sibling model's number was published on this row. Data correction, not a market move: xAI did not cut Grok 4.20's price on 2026-07-28. Supersedes the wrong baseline+carry-forward span. Corroborated by the docs/models embedded JSON (grok-4.20 12500/25000 per-token = $1.25/$2.50) and OpenRouter x-ai/grok-4.20 ($1.25/$2.50). (input_per_mtok: $2.00 → $1.25 · output_per_mtok: $6.00 → $2.50)

3. Jul 8, 2026

   New model added: Grok 4.5 new listing

   Grok 4.5 began being tracked.

Per 1M tokens, cheapest blended first. "First tracked" is when this model entered our price history.

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