Product dossier · by xAI
Grok
Versions, pricing, availability and every story about Grok.
TopicsBrowsers & Assistants
Deals & partnerships · xAI
Partnership
Reflection AI signs ~$6.3B Colossus 2 compute deal with SpaceX
cnbc.com (source, opens in a new tab)Acquisition
SpaceX to acquire Cursor maker Anysphere in $60B all-stock deal
All-stock merger announced June 16, 2026 and closed August 14, 2026 per SpaceX SEC filings; Anysphere shareholders received about 389.3M SpaceX Class A shares. Cursor joins SpaceXAI's coding push.
reuters.com (source, opens in a new tab)Partnership
Google to pay SpaceX $920M a month for Colossus compute (~$30B through 2029)
Per SpaceX's SEC filing: about 110,000 NVIDIA GPUs from October 2026 to June 2029, ramping through September at a reduced fee; either side may terminate after Dec 31, 2026 with 90 days' notice (CNBC, Bloomberg).
cnbc.com (source, opens in a new tab)Partnership
xAI to provide Anthropic with Colossus 1 compute
x.ai (source, opens in a new tab)Partnership
HUMAIN invested $3B in xAI’s Series E
reuters.com (source, opens in a new tab)Acquisition
SpaceX acquires xAI
SpaceX acquires xAI; the company now operates as SpaceXAI.
x.ai (source, opens in a new tab)Funding
xAI raises $20B Series E
Upsized Series E above the $15B target. Valuation (~$230B) per CNBC report, not confirmed by xAI.
x.ai (source, opens in a new tab)Partnership
xAI and Saudi Arabia’s HUMAIN to build 500 MW+ data center and deploy Grok nationwide
Framework agreement at the US-Saudi Investment Forum: hyperscale GPU data centers in Saudi Arabia anchored by a 500 MW+ flagship site (NVIDIA GB300), xAI's first large deployment outside the US; Grok integrated into HUMAIN ONE. Value not disclosed.
x.ai (source, opens in a new tab)Partnership
Pentagon CDAO awards Anthropic, Google and xAI contracts of up to $200M each
ai.mil (source, opens in a new tab)Funding
xAI raises $5B equity alongside $5B debt
reuters.com (source, opens in a new tab)
Sources: company announcements & release notes, press reports.
Release timeline
Every Grok model release · 13 releases
Grok 4.7
docs.x.ai (source, opens in a new tab)Grok 4.6
docs.x.ai (source, opens in a new tab)Grok 4.5
docs.x.ai (source, opens in a new tab)Grok 4.3
docs.x.ai (source, opens in a new tab)Grok 4.20
docs.x.ai (source, opens in a new tab)Grok 4.1
x.ai (source, opens in a new tab)Grok 4 Fast
x.ai (source, opens in a new tab)Grok Code Fast 1
x.ai (source, opens in a new tab)
Show all 13 releases
Grok 4
x.ai (source, opens in a new tab)Grok 3
x.ai (source, opens in a new tab)Grok-2
x.ai (source, opens in a new tab)Grok-1.5
x.ai (source, opens in a new tab)Grok-1 (open weights)
x.ai (source, opens in a new tab)
Sources: company announcements & release notes.
Editor's picks
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Grok 4.1: xAI’s Focus on Emotional AI and Usability
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Versions & specs
Model · date · context · max output · price per 1M tokens (in/out, cached) · modalities · cutoff · license
| Model | Released | Context | Max output | Price in / out (per 1M) | Modalities | Knowledge cutoff | License / access | Spec source |
|---|---|---|---|---|---|---|---|---|
| Grok 4.7 | Sep 21, 2026 | 500K | — | $2 / $6 cached $0.5 Higher rate above 200K context; also on Vertex AI and Microsoft Foundry. | Text, image in → text out | May 2026 | Proprietary (API & app) | docs.x.ai |
| Grok 4.6 | Aug 12, 2026 | 500K | — | $2 / $6 cached $0.5 Higher rate above 200K context. | Text, image in → text out | — | Proprietary (API & app) | docs.x.ai |
| Grok 4.5 | Jul 8, 2026 | 500K | — | $2 / $6 cached $0.3 Higher rate above 200K context. | Text, image in → text out | — | Proprietary (API & app) | docs.x.ai |
| Grok 4.3 | Apr 30, 2026 | 1M | — | $1.25 / $2.5 cached $0.2 Higher rate above 200K context. | Text, image in → text out | — | Proprietary (API & app) | docs.x.ai |
| Grok 4.20 Grok 4.20, Grok 4.20 Multi-agent | Mar 10, 2026 | 1M | — | $1.25 / $2.5 cached $0.2 Higher rate above 200K context. | Text, image in → text out | — | Proprietary (API & app) | docs.x.ai |
| Grok 4.1 | Nov 17, 2025 | — | — | — | Text, image in → text out | — | Proprietary (API & app) | x.ai |
| Grok 4 Fast | Sep 19, 2025 | 2M | — | $0.2 / $0.5 cached $0.05 Prompts ≥128K: $0.40 in / $1.00 out. | Text, image in → text out | — | Proprietary (API & app) | x.ai |
| Grok Code Fast 1 | Aug 28, 2025 | 256K | — | $0.2 / $1.5 cached $0.02 Launch price; model id now aliased to grok-build-0.1 ($1/$2). | Text in → text out | — | Proprietary (API) | x.ai |
| Grok 4 Grok 4, Grok 4 Heavy | Jul 9, 2025 | 256K | — | — | Text, image in → text out | — | Proprietary (API & app) | x.ai |
| Grok 3 Grok 3, Grok 3 mini (Think) | Feb 19, 2025 | 1M | — | — | Text, image in → text out | — | Proprietary (API & app) | x.ai |
| Grok-2 Grok-2, Grok-2 mini | Aug 13, 2024 | — | — | — | Text, image in → text out | — | Proprietary (API & app) | x.ai |
| Grok-1.5 | Mar 28, 2024 | 128K | — | — | Text in → text out | — | Proprietary (API & app) | x.ai |
Vendor benchmark claims
- Grok 3: AIME 2025 93.3% (Grok 3 Think, cons@64, vendor claim) · GPQA 84.6% (vendor claim) · LiveCodeBench 79.4% (vendor claim)
Benchmarks as published by the vendor at launch; not independently verified by i10x.
Sources: company announcements & release notes. Prices = standard API list price in USD per 1M tokens at time of release or current docs; batch is typically 50% off.
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