Comparing 2 models
Gemini 4 Argon vs GPT-6 Astra
Benchmarks through
Verdict
Gemini 4 Argon places higher on 9 of the 10 tasks where both are ranked. Gemini 4 Argon costs 5.0x less per input token. GPT-6 Astra accepts 1.0x more context.
- Choose Gemini 4 Argon for Logic & Problem Solving (#1), Grounded RAG (#1), RAG & Long Context (#1).
- Choose GPT-6 Astra for Frontend & UI (#6).
Built from the published task rankings below; ranks come from each task's own weighted benchmarks, so a win on one task says nothing about another.
Measured head to head
Benchmarks both models were run on
| Evaluation | Gemini 4 Argon | GPT-6 Astra | Source |
|---|---|---|---|
| FACTS Grounding | 78.6% | 82% | source · 2026-10-12 |
| FrontierMath Tiers 1-3 (Epoch AI) | 86% ± 2.1 | 93.7% ± 1.4 | source · 2026-10-13 |
| GPQA Diamond (Epoch AI) | 96.4% ± 1.2 | 95.8% ± 1.4 | source · 2026-10-13 |
| LMArena Agent | 13.7 | 13.7 | source · 2026-10-14 |
| LMArena Agent Bash Recovery | -21.4 | 5.5 | source · 2026-10-08 |
| LMArena Agent Steerability | 16.8 | 14.6 | source · 2026-10-14 |
| LMArena Agent Task Outcome | 14.6 | 12.5 | source · 2026-10-14 |
| LMArena Agent Tool Hallucination | 0 | 0.6 | source · 2026-10-14 |
| LMArena Creative Writing | 1527 Elo | 1421 Elo | source · 2026-10-15 |
| LMArena Instruction Following | 1536 Elo | 1455 Elo | source · 2026-10-15 |
| LMArena Long Query | 1546 Elo | 1461 Elo | source · 2026-10-15 |
| LMArena Math | 1536 Elo | 1465 Elo | source · 2026-10-15 |
| LMArena Text | 1524 Elo | 1477 Elo | source · 2026-10-15 |
| LMArena Text Factuality | 1511 Elo | 1466 Elo | source · 2026-10-15 |
| LMArena WebDev | 1678 Elo | 1780 Elo | source · 2026-10-13 |
| OTIS Mock AIME (Epoch AI) | 100% ± 0 | 100% ± 0 | source · 2026-10-13 |
| SimpleQA Verified (Epoch AI) | 76% ± 1.4 | 75.6% ± 1.4 | source · 2026-10-13 |
Values are as published by each evaluator, in its own units; rows from different evaluators are not on a common scale.
task evidence
How they place when the question changes
Lower ranks are better. “Best” marks the strongest option in this shortlist for that task.