gpt-oss-20b (High) vs Grok 4.3 (High)
Which is better for the money: gpt-oss-20b (High) by OpenAI or Grok 4.3 (High) by SpaceXAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Trade-off
Verdict
Depends on your budget
Grok 4.3 (High) scores 15.9 points higher (24.9 vs 9.0) but costs 13× as much to run the benchmark ($363 vs $28.8; mid-range vs budget cost classes). They are not alternatives at one budget: pick Grok 4.3 (High) when you need intelligence above 9.0, and gpt-oss-20b (High) when 9.0 is enough.
| Metric | gpt-oss-20b (High) | Grok 4.3 (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 9.0 | 24.9 | +176.7% Grok 4.3 (High) is 2.8× more intelligent |
| Total AA cost (lower is better) | $28.81 | $363.24 | +1160.8% Grok 4.3 (High) is 13× more expensive |
| End-to-end time (lower is better) | 15.23s | 28.87s | +89.6% Grok 4.3 (High) is 89.6% slower |
| Price per 1M tokens (in / out) | $0.05 / $0.22 | $1.25 / $2.50 | |
| Input modalities | Text | Text, Image |
Grok 4.3 (High) vs gpt-oss-20b (High): 176.7% more intelligence, 1160.8% more cost to run the AA benchmark, and 89.6% slower end-to-end.
Today's Pareto frontier
Against the frontier
- gpt-oss-20b (High) is off the frontier: at the same or lower cost, GPT-6 Luna (Low) scores 21.50 for $10.6.
- Grok 4.3 (High) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Medium) scores 47.80 for $361.
gpt-oss-20b (High)Grok 4.3 (High)Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-oss-20b/grok-4-3 · Markdown: /api/v1/compare/gpt-oss-20b/grok-4-3?format=md · llms.txt · agent skill