Comparing 2 models
Claude Sonnet 5.5 vs Gemini 4 Argon
Benchmarks through
Verdict
Gemini 4 Argon places higher on 4 of the 6 tasks where both are ranked. Gemini 4 Argon accepts 1.0x more context.
- Choose Claude Sonnet 5.5 for Coding (#2), Frontend & UI (#2).
- Choose Gemini 4 Argon for Tool & Function Calling (#2), Competition Math (#3), Math & Reasoning (#3).
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 | Claude Sonnet 5.5 | Gemini 4 Argon | Source |
|---|---|---|---|
| Design Arena Coding | 1366 Elo | 1335 Elo | source · 2026-10-16 |
| Design Arena UI | 1378 Elo | 1319 Elo | source · 2026-10-16 |
| Design Arena Website | 1330 Elo | 1321 Elo | source · 2026-10-16 |
| FrontierMath Tiers 1-3 (Epoch AI) | 88.8% ± 1.9 | 86% ± 2.1 | source · 2026-09-29 |
| GPQA Diamond (Epoch AI) | 95.6% ± 1.4 | 96.4% ± 1.2 | source · 2026-09-29 |
| LMArena Agent | 12.5 | 13.7 | source · 2026-10-14 |
| LMArena Agent Bash Recovery | 15 | -21.4 | source · 2026-10-08 |
| LMArena Agent Steerability | 12.3 | 16.8 | source · 2026-10-14 |
| LMArena Agent Task Outcome | 20 | 14.6 | source · 2026-10-14 |
| LMArena Agent Tool Hallucination | 0.5 | 0 | source · 2026-10-14 |
| LMArena Creative Writing | 1467 Elo | 1527 Elo | source · 2026-10-15 |
| LMArena Instruction Following | 1488 Elo | 1536 Elo | source · 2026-10-15 |
| LMArena Long Query | 1494 Elo | 1546 Elo | source · 2026-10-15 |
| LMArena Math | 1499 Elo | 1536 Elo | source · 2026-10-15 |
| LMArena Text | 1475 Elo | 1524 Elo | source · 2026-10-15 |
| LMArena Text Factuality | 1474 Elo | 1511 Elo | source · 2026-10-15 |
| LMArena WebDev | 1774 Elo | 1678 Elo | source · 2026-10-13 |
| OTIS Mock AIME (Epoch AI) | 100% ± 0 | 100% ± 0 | source · 2026-09-29 |
| SimpleQA Verified (Epoch AI) | 46.5% ± 1.6 | 76% ± 1.4 | source · 2026-09-29 |
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.