western lab · United States
xAI
Vertically integrated lab operating the Colossus training cluster in Memphis, shipping the Grok model family with tight distribution through X.
- Founded
- 2023
- Models tracked
- 26
- Valuation
- $113B
- Country
- United States
est. · as of Aug 2026
Founders
Elon Musk
Stock Price
SPCX stock price by TradingView ↗Model Benchmarks
data by
| Model | Released | Intelligence | Coding | GPQA | HLE | SciCode | Terminal-Bench Hard | Tau2 | LCR | IFBench | Speed | TTFT | $/1M in | $/1M out | $/1M blended |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grok 4.6 (high) | 2026-08-12 | 44.3 | 76.8 | 94.9% | 42.9% | 56.5% | — | — | 80.3% | — | 57.6 t/s | 35.83s | $2 | $6 | $3 |
| Grok 4.6 (xhigh) | 2026-08-12 | 44.2 | 75.9 | 93.5% | 44.1% | 53% | — | — | 81% | — | 61.3 t/s | 35.96s | $2 | $6 | $3 |
| Grok 4.6 (medium) | 2026-08-12 | 42.8 | 74.4 | 93.5% | 42.1% | 55.9% | — | — | 81% | — | 59.2 t/s | 23.35s | $2 | $6 | $3 |
| Grok 4.5 (high) | 2026-07-08 | 38.8 | 72.4 | 93.1% | 42.7% | 55% | — | — | 79.3% | — | 0 t/s | 0s | $2 | $6 | $3 |
| Grok 4.6 (low) | 2026-08-12 | 35.1 | 66.3 | 87.9% | 27.6% | 49.4% | — | — | 80.7% | — | 50.6 t/s | 2.51s | $2 | $6 | $3 |
| Grok Build 0.1 0616 | 2026-06-16 | 27.2 | 51.5 | 89.5% | 38.3% | — | — | — | 74.7% | — | 0 t/s | 0s | $1 | $2 | $1.25 |
| Grok 4.20 0309 v2 (Reasoning) | 2026-04-07 | 25.7 | — | 91.1% | 34.5% | — | 37.9% | 93% | 69% | 81.2% | 0 t/s | 0s | $1.25 | $2.5 | $1.56 |
| Grok 4.20 0309 (Reasoning) | 2026-03-10 | 25.2 | — | 88.5% | 32.4% | — | 40.9% | 96.5% | 67.7% | 82.9% | 0 t/s | 0s | $2 | $6 | $3 |
| Grok 4.3 (high) | 2026-04-30 | 24.9 | 42.2 | 90.1% | 37.2% | 48.3% | 37.9% | 97.7% | 73% | 81.3% | 0 t/s | 0s | $1.25 | $2.5 | $1.56 |
| Grok 4.3 (medium) | 2026-04-30 | 24.8 | — | 89% | 30% | — | 30.3% | 91.2% | 75% | 83.3% | 0 t/s | 0s | $1.25 | $2.5 | $1.56 |
Indices on Artificial Analysis 0-100 scale · eval scores are raw accuracy · “—” means the metric is not published for that model
Release Timeline
last 48 months- 2026-09-18xAI released Grok Voice Transcribe 2.0.Model Release
- 2026-09-16xAI built memory in Grok.Milestone
- 2026-09-04xAI set Grok on procurement.Milestone
- 2026-09-03xAI designed Grok Bot.Milestone
- 2026-09-01Biosecurity at the frontier.Milestone
- 2026-08-26xAI included Grok Bot with more plans.Milestone
Milestones written by Frontier Index from Artificial Analysis release dates, disclosed funding rounds, the official newsroom and major tech press. Linked rows open the original report.
Newsroom
source ↗- 2026-09-03Grok Bot for EnterpriseRelease
- 2026-09-16Memory in Grok BuildRelease
- 2026-09-04Setting Grok Bot loose on procurementRelease
- 2026-09-03Designing Grok Bot for a world of persistent agentsRelease
- 2026-09-01Biosecurity at the frontierRelease
- 2026-08-29Grok Bot now works with XRelease
- 2026-08-26Grok 4.6 on Microsoft FoundryModel Launch
- 2026-08-26Grok Bot is now included with more plansRelease
Partners & Investors
- Total raised
- $52.1B
- Latest round
- $20B (Series E)
- Funding rounds
- 15
Funding rounds
- Series D$10B (at a $200B valuation)
Sep 2025 · Investor group not fully disclosed in public reporting
- Debt / Equity Package~$10B (mix of debt and equity)
Jul 2025 · Arranged partly through Morgan Stanley
- Series E$20B
Jan 2026 · Valor Equity Partners, StepStone, Fidelity, QIA, MGX, Baron Capital, NVIDIA, Cisco
- Series C$6B
Dec 2024 · a16z, BlackRock, Fidelity, Kingdom Holdings, Lightspeed, MGX, Morgan Stanley, QIA, Sequoia, Valor, Vy Capital, NVIDIA, AMD
- Series B$6B
May 2024 · Valor, Vy Capital, a16z, Sequoia, Fidelity, Kingdom Holding
- Series A / initial financing$134.7M
Dec 2023 · Initial investors
Disclosed figures only · as of Aug 2026