← ModelRumors.ai buyer's guide
HEAD TO HEAD · UPDATED NOV 6, 2026
GPT-6 Astra vs Grok 4.7
OpenAI against xAI, on sourced numbers only. Green marks the higher (or cheaper) value on each row; the text below only calls a lead when the gap is bigger than measurement noise.
| GPT-6 Astra | Grok 4.7 | |
|---|---|---|
| Arena Elo | 1476 source ↗ | 1441 source ↗ |
| GPQA Diamond | 96.0% source ↗ | not published |
| $ per 1M in / out | $10 / $50 source ↗ | $2 / $6 source ↗ |
| Blended $ per 1M (3:1) | $20.00 source ↗ | $3.00 source ↗ |
| Context window | 1.05M source ↗ | 500K source ↗ |
| Output speed | not published | 72 tok/s source ↗ |
| Released | Sep 3, 2026 source ↗ | Sep 21, 2026 source ↗ |
| Open weights | No source ↗ | No source ↗ |
| Reasoning effort tiers | low · medium · high · xhigh · max (default: not stated) | low · medium · high · xhigh (default: high) |
| API effort control | reasoning={"effort": "low" | "medium" | "high" | "xhigh" | "max"} source ↗ | reasoning_effort="low" | "medium" | "high" | "xhigh" source ↗ |
| Additional benchmarks | DeepSWE v1.1: 74.1% source ↗ Terminal-Bench 4.0: 57.9% source ↗ AA Intelligence Index v5.0.1: 57 (Max) source ↗ | DeepSWE v1.1: 71.0% source ↗ CursorBench 4.0: 46.3% source ↗ AA Intelligence Index v5.0.1: 35 (xhigh) source ↗ |
| Best for (workload) | OpenAI's most capable model: 96.0% GPQA Diamond, 74.1% DeepSWE v1.1 and 57.9% Terminal-Bench 4.0 (OpenAI). source ↗ | xAI's flagship. Reasoning is always on and cannot be turned off; 500K context; 71.0% on DeepSWE v1.1 (xAI). source ↗ |
Arena Elo from the arena.ai text leaderboard as of Oct 27, 2026 source ↗. Speed measured by Artificial Analysis and varies by provider.
Which one should I use?
For high-volume work where cost matters most, Grok 4.7 is about 6.7 times cheaper per token. For overall answer quality as rated by people in blind tests, GPT-6 Astra leads clearly (1476 vs 1441 Arena Elo). On release timing, OpenAI is at day 11 of a typical ~23-day gap (ADOPT NOW · FRESH RELEASE), and xAI is at day 46 of a typical ~46-day gap (PAST TYPICAL GAP).
Key differences from the sourced numbers
- Grok 4.7 is the cheaper option: $3.00 vs $20.00 per 1M tokens at a 3:1 input-to-output mix (about 6.7 times less).
- GPT-6 Astra scores 35 Elo points higher (1476 vs 1441) on the Arena text leaderboard, where people vote on blind side-by-side answers.
- GPT-6 Astra pricing note: Prompts up to 272K tokens; $20 / $75 above 272K. Batch and Flex: $5 / $25.
- Grok 4.7 pricing note: Prompts under 200K tokens; $4 / $12 above 200K.
Frequently asked questions
Is GPT-6 Astra or Grok 4.7 better?
Grok 4.7 is the cheaper option: $3.00 vs $20.00 per 1M tokens at a 3:1 input-to-output mix (about 6.7 times less). GPT-6 Astra scores 35 Elo points higher (1476 vs 1441) on the Arena text leaderboard, where people vote on blind side-by-side answers. GPT-6 Astra pricing note: Prompts up to 272K tokens; $20 / $75 above 272K. Batch and Flex: $5 / $25. Grok 4.7 pricing note: Prompts under 200K tokens; $4 / $12 above 200K.
Which one should I use: GPT-6 Astra or Grok 4.7?
For high-volume work where cost matters most, Grok 4.7 is about 6.7 times cheaper per token. For overall answer quality as rated by people in blind tests, GPT-6 Astra leads clearly (1476 vs 1441 Arena Elo). On release timing, OpenAI is at day 11 of a typical ~23-day gap (ADOPT NOW · FRESH RELEASE), and xAI is at day 46 of a typical ~46-day gap (PAST TYPICAL GAP).
How much does GPT-6 Astra cost compared with Grok 4.7?
GPT-6 Astra lists at $10 / $50 per 1M input/output tokens ($20.00/1M blended at 3:1). Grok 4.7 lists at $2 / $6 per 1M input/output tokens ($3.00/1M blended at 3:1).
Facts checked Nov 5, 2026 against official sources. Every number links to its source. Spotted an error? Email [email protected].