Gemini 4 Argon vs GPT-5.5 Pro
Gemini 4 Argon 
GPT-5.5 Pro Verdict
- Gemini 4 Argon (high) leads on quality: 70.0 vs 65.5.
- Gemini 4 Argon (high) is stronger in agents & tools, coding, composite, human preference, knowledge, long context, maths, reasoning.
- Gemini 4 Argon (high) is 17× cheaper ($4.00 vs $67.50 per 1M blended).
| Metric | Gemini 4 Argon (high) | GPT-5.5 Pro (xhigh) |
|---|---|---|
| BenchLeader Index | 70.0 | 65.5 |
| Agents & tools score | 67.5 | – |
| Coding score | 72.1 | – |
| Composite score | 89.2 | – |
| Human preference score | 73.2 | – |
| Knowledge score | 75.7 | – |
| Long context score | 65.0 | – |
| Maths score | 71.9 | 71.8 |
| Reasoning score | 82.0 | 77.9 |
| Blended price $/M | $4.00 | $67.50 |
| Output speed | – | 22 tok/s |
| Time to first answer | – | 3.4 s |
| Context window | 1M | 1.1M |
| FrontierMath Tiers 1–3 | – | 87.7% |
| FrontierMath Tier 4 | – | 78.0% |
| SciCode | 61.8% | – |
| LMArena Text | 1525 | – |
| LMArena Hard Prompts | 1551 | – |
| LMArena Coding | 1562 | – |
| LMArena WebDev | 1678 | – |
| LMArena Agent | 9.3 | – |
| AA Intelligence Index v4.3.2 | 52.6 | – |
| AA-LCR | 79.7% | – |
| AA-Omniscience | 42.4 | – |
| Humanity's Last Exam (AA) | 57.1% | – |
| SciCode (AA) | 61.8% | – |
| IOI | 100.0% | – |
| LegalBench | 88.3% | – |
| Vals Index | 68.9 | – |
| ARC-AGI-1 | – | 95.0% |
| ARC-AGI-2 | – | 84.2% |
| CritPt | 27.1% | 30.6% |
| GDPval-AA v2.1 | 56.3% | – |
| BioMysteryBench | 76.3% | – |
| Code Migration | 68.2% | – |
| CUA-bench | 4.8% | – |
| CyberBench | 77.9% | – |
| Excel Modeling Benchmark | 75.2% | – |
| Finance Agent v2 | 65.4% | – |
| Harvey's Legal Agent Benchmark | 19.6% | – |
| Legal Research Bench | 54.8% | – |
| MedCode | 58.8% | – |
| MedScribe | 87.4% | – |
| MysteryMechanism | 45.5% | – |
| ProgramBench | 2.5% | – |
| Public Benefits Bench | 69.8% | – |
| SAGE | 53.6% | – |
| SREBench | 44.3% | – |
| Tax Agent Bench | 76.2% | – |
| Terminal-Bench 4.0 (Vals) | 57.6% | – |
| Terminal-Bench Science | 44.3% | – |
| Vibe Code Bench v1.1 | 91.9% | – |
| LMArena Maths | 1528 | – |
| LMArena Creative Writing | 1519 | – |
| LMArena Instruction Following | 1529 | – |
| LMArena Multi-turn | 1553 | – |
| LMArena Longer Queries | 1545 | – |
| LMCA | – | 53.9% |
| DTBench | – | 96.0% |
| FrontierSWE | 55.0% | – |
| Terminal-Bench 4.0 (AA) | 57.1% | – |
| AutomationBench | 77.5% | – |
| GDP.pdf | 21.8% | – |
| AA-Omniscience: accuracy | 49.9% | – |
| AA-Omniscience: non-hallucination | 84.9% | – |
| AA-Briefcase v1.1 | 1488 | – |
Data as of 2026-10-11. Best configuration of each model; every score links to its source on the model pages.
Gemini 4 Argon vs GPT-5.5 Pro: questions
- Is Gemini 4 Argon better than GPT-5.5 Pro?
- Gemini 4 Argon (high) leads on quality: 70.0 vs 65.5. The BenchLeader Index combines every independent quality benchmark; Gemini 4 Argon (high) is ahead overall as of 2026-10-11, but check the category scores for your use.
- Which is cheaper, Gemini 4 Argon or GPT-5.5 Pro?
- Gemini 4 Argon is cheaper: $4.00 against $67.50 per million tokens, blended at three input tokens per output token.
- Which has the larger context window?
- GPT-5.5 Pro accepts more context: 1.1M against 1M tokens.