gpt-oss-120b (High) vs Grok 4.3 (High)
Which is better for the money: gpt-oss-120b (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 13.3 points higher (24.9 vs 11.6) but costs 3.0× as much to run the benchmark ($363 vs $123; both mid-range class). Pick Grok 4.3 (High) when the extra intelligence is worth the premium, otherwise gpt-oss-120b (High).
| Metric | gpt-oss-120b (High) | Grok 4.3 (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 11.6 | 24.9 | +114.7% Grok 4.3 (High) is 2.1× more intelligent |
| Total AA cost (lower is better) | $122.71 | $363.24 | +196.0% Grok 4.3 (High) is 3.0× more expensive |
| End-to-end time (lower is better) | 11.29s | 28.87s | +155.7% Grok 4.3 (High) is 155.7% slower |
| Price per 1M tokens (in / out) | $0.15 / $0.60 | $1.25 / $2.50 | |
| Input modalities | Text | Text, Image |
Grok 4.3 (High) vs gpt-oss-120b (High): 114.7% more intelligence, 196.0% more cost to run the AA benchmark, and 155.7% slower end-to-end.
Today's Pareto frontier
Against the frontier
- gpt-oss-120b (High) is off the frontier: at the same or lower cost, GPT-6 Luna (Max) scores 38.10 for $122.
- 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-120b (High)Grok 4.3 (High)Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
Compare something else
Agents:
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-oss-120b/grok-4-3 · Markdown: /api/v1/compare/gpt-oss-120b/grok-4-3?format=md · llms.txt · agent skill