Grok 4 0709
SpaceXSI
Key facts · verified Oct 29, 2026
Grok 4 0709 is a SpaceXSI model released on 9 Jul 2025. It was retired on 15 May 2026. Its last listed API price was $3 per million input tokens and $15 per million output tokens. Its context window is 256K tokens. It ranks #152 on LMArena's text leaderboard (Elo 1411, read 2 Nov 2026). Source: docs.x.ai.
Grok 4 0709 is a SpaceXSI model that was available on the xAI API as grok-4-0709 until 15 May 2026, when xAI retired it and began redirecting requests to Grok 4.3 at low reasoning effort. LMArena listed it at $3 per million input tokens and $15 per million output tokens, with a 256K-token context window. On LMArena's text leaderboard: 1411 Elo (rank 152).
Pricing & specs checkedSource: vendor documentation · checked Oct 29, 2026LMArena: 1411 Elo (rank 152) · source · retrieved Nov 2, 2026
Full Specifications
$3 / $15 per million tokens | |
|---|---|
| Identity | |
| Developer | SpaceXSI |
| Released | Jul 2025 |
| Retired | 15 May 2026 |
| Status | Retired. xAI retired grok-4-0709 on 15 May 2026 at 12:00 PM PT; requests redirect to grok-4.3 (low reasoning effort) and are billed at grok-4.3 rates. |
| Licence | Proprietary |
| Self-hostable | No |
| Cost | |
| Blended $/1M tokensinput × 0.75 + output × 0.25 | $6.000 / 1M tokens |
| Input price | $3.000 / 1M tokens |
| Output price | $15.000 / 1M tokens |
| Capacity | |
| Context window | 256K tokens |
| Measured quality | |
| LMArena Elo | 1411 (checked Nov 2026) |
| LMArena rank | Rank 152 |
| GPQA Diamond | 87 |
| Elo per dollarLMArena Elo ÷ blended $/1M tokens | 235 |