GPT-6 Astra vs Grok 4.6
Price, context window & benchmark comparison
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Verdict: Grok 4.6 is 6.7× cheaper than GPT-6 Astra on a typical 3:1 input/output mix. GPT-6 Astra scores higher on the Artificial Analysis Intelligence Index (52.7 vs 44.3). GPT-6 Astra has the larger context window (1.1M vs 500K).
| GPT-6 Astra | Grok 4.6 | |
|---|---|---|
| Input price / 1M | $10.00 | $2.00 |
| Output price / 1M | $50.00 | $6.00 |
| Blended price (3:1) | $20.00 | $3.00 |
| Cached input / 1M | $1.00 | $0.50 |
| Context window | 1.1M | 500K |
| Max output | 128K | 450K |
| Intelligence index | 52.7 | 44.3 |
| Coding index | 76.9 | 76.8 |
| Providers | 6 | 5 |
| Best provider uptime (30m) | 100.0% | 100.0% |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-09-04 | 2026-08-12 |
| Retirement | — | — |
Cost calculator
FAQ
Which is cheaper, GPT-6 Astra or Grok 4.6?
Grok 4.6 is 6.7× cheaper than GPT-6 Astra on a typical 3:1 input/output mix.
GPT-6 Astra vs Grok 4.6: which has a bigger context window?
GPT-6 Astra: 1,050,000 tokens. Grok 4.6: 500,000 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: GPT-6 Astra ≈ $45,000, Grok 4.6 ≈ $7,000.
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