GPT-6 Astra vs Grok 4.7: Specs & Benchmark Comparison
GPT-6 Astra is developed by OpenAI, while Grok 4.7 comes from xAI. Both were released in September 2026.
The two models share 3 published benchmarks. GPT-6 Astra leads on 3 of them. The widest gaps are on Terminal-Bench 4.0, where GPT-6 Astra scores 57.7% against 38.0%; HealthBench Professional, where GPT-6 Astra scores 63.4% against 56.7%. Averaged across everything we track, GPT-6 Astra sits at 74.4% and Grok 4.7 at 56.5%.
Grok 4.7 is the cheaper API at $2 per million input tokens and $6 per million output tokens, roughly 5 times cheaper than GPT-6 Astra at $10 and $50. GPT-6 Astra takes the larger context window at 1M tokens, compared with 500K for Grok 4.7. Both accept text and images as input.
| Characteristic | GPT-6 Astra | Grok 4.7 |
|---|---|---|
| Company | OpenAI | xAI |
| Release Date | September 4, 2026 | September 21, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.1M | 500K |
| Context (output) | 128K | — |
| Input Price / 1M | $10.00 | $2.00 |
| Output Price / 1M | $50.00 | $6.00 |
| Average Score | 74.4% | 56.5% |
| Benchmarks | ||
| Terminal-Bench 4.0 | 57.7% | 38.0% |
| HealthBench Professional | 63.4% | 56.7% |
| DeepSWE 1.1 | 74.1% | 71.0% |
Visual Benchmark Comparison
Verdict
Grok 4.7 leads in 2 out of 4 comparison categories.
Both models show comparable average scores: GPT-6 Astra — 0.7, Grok 4.7 — 0.6.
Grok 4.7 is 7.5x cheaper: input $2.00/1M vs $10.00/1M tokens.
GPT-6 Astra supports a larger context: 1M vs 500K tokens.
Grok 4.7 is newer: released 9/21/2026 vs 9/4/2026.
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Frequently Asked Questions
Which is better for coding — GPT-6 Astra or Grok 4.7?
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Which has a larger context window — GPT-6 Astra or Grok 4.7?
The GPT-6 Astra and Grok 4.7 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GPT-6 Astra or Grok 4.7 page. See also the complete list of AI model comparisons.