GPT-6 Astra (High) vs Grok 4.6 (Medium)
Which is better for the money: GPT-6 Astra (High) by OpenAI or Grok 4.6 (Medium) by SpaceXAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
GPT-6 Astra (High) scores 8.1 points higher (50.9 vs 42.8) but costs 1.9× as much to run the benchmark ($2925 vs $1557; flagship vs premium cost classes). Pick GPT-6 Astra (High) when the extra intelligence is worth the premium, otherwise Grok 4.6 (Medium).
| Metric | GPT-6 Astra (High) | Grok 4.6 (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 50.9 | 42.8 | −15.9% Grok 4.6 (Medium) is 15.9% less intelligent |
| Total AA cost (lower is better) | $2,925.01 | $1,557.04 | −46.8% Grok 4.6 (Medium) is 46.8% cheaper |
| End-to-end time (lower is better) | 49.57s | 31.67s | −36.1% Grok 4.6 (Medium) is 36.1% faster |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $2.00 / $6.00 | |
| Input modalities | Text, Image | Text, Image |
Grok 4.6 (Medium) vs GPT-6 Astra (High): 15.9% less intelligence, 46.8% less cost to run the AA benchmark, and 36.1% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-6 Astra (High) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
- Grok 4.6 (Medium) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
GPT-6 Astra (High)Grok 4.6 (Medium)Today's Pareto frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-6-astra-high/grok-4-6-medium · Markdown: /api/v1/compare/gpt-6-astra-high/grok-4-6-medium?format=md · llms.txt · agent skill