xAI timeline

Every model launch, feature release, outage, usage-limit change and price move we have tracked, newest first. Each links to its sources.

Models, 90 days0Confirmed launches

Features, 90 days0Products and updates

Incidents, 90 days0From status pages and reports

Limits and pricing1Changes in 90 days

Model lineup

Every xAI model in our catalogue, newest first, with context and list price per million tokens (input / output). Compare all prices

Sep 2026Grok 4.7Frontier · 500K ctx$1.60 / $4.80

Aug 2026Grok 4.6Frontier · 500K ctx$2.00 / $6.00

Jul 2026Grok 4.5Frontier · 500K ctx$2.00 / $6.00

May 2026Grok Build 0.1Balanced · 256K ctx$1.00 / $2.00

Apr 2026Grok 4.3Flagship · 1M ctx$1.25 / $2.50

Mar 2026Grok 4.20Reasoning · 2M ctx$1.25 / $2.50

Jul 2025Grok 4Legacy · 256K ctx$3.00 / $15.00Retired

Feb 2025Grok 3Legacy · 131K ctx$3.00 / $15.00Retired

Milestones first. Minor items (small updates, brief status-page incidents, posts without news) are one tap away.

month
Grok 4.7 releasedFrontier · 500K context · $1.60 in / $4.80 out per 1M

12 Aug
Grok 4.6 listed on OpenRouterLimits and pricing · New model generation from a lab
month
Grok 4.6 releasedFrontier · 500K context · $2.00 in / $6.00 out per 1M

month
Grok 4.5 releasedFrontier · 500K context · $2.00 in / $6.00 out per 1M

month
Grok Build 0.1 releasedBalanced · 256K context · $1.00 in / $2.00 out per 1M

month
Grok 4.20 releasedReasoning · 2M context · $1.25 in / $2.50 out per 1M

month
Grok 4 releasedLegacy · 256K context · $3.00 in / $15.00 out per 1M · retired

month
Grok 3 releasedLegacy · 131K context · $3.00 in / $15.00 out per 1M · retired

Stories come from the Wire from July 2026 on; earlier model releases come from our catalogue and are dated to the month. xAI on the Vikshy Score