# Gemini 4 Argon vs GPT-5.6 Sol

> Side-by-side benchmark comparison for Gemini 4 Argon and GPT-5.6 Sol across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-4-argon-vs-gpt-5-6-sol
- Last updated: September 30, 2026

- Shared sourced benchmarks: 6
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Pick GPT-5.6 Sol if you want the stronger benchmark profile. Gemini 4 Argon only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- GPT-5.6 Sol leads overall 78.06 to 64.59.
- The clearest category separation is in knowledge, where the averages are 72.9 for Gemini 4 Argon and 78.5 for GPT-5.6 Sol.
- The biggest single benchmark swing is Gray Swan IPI (15 attempts) in Instruction Following, with scores of 0.7% and 27.0%.
- Gemini 4 Argon is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- GPT-5.6 Sol also has the larger context window at 1.05M.

## Model Snapshot

| Property | Gemini 4 Argon | GPT-5.6 Sol |
|----------|----------|----------|
| Creator | Google | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | null | 1.05M |
| Overall Score | 64.59 | 78.06 |
| Benchmarks Covered | 17 | 39 |
| Pricing (input/output) | $2.00 / $10.00 | $4.00 / $20.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Gemini 4 Argon public-lane score: 63.7 (Estimated · #14/119)
- GPT-5.6 Sol public-lane score: 68.1 (Supported · #7/119)

| Benchmark | Gemini 4 Argon | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| AutomationBench | 51.3% | Coming soon | Coming soon |
| Finance Agent v2 | 65.4% | Coming soon | Coming soon |
| Terminal-Bench 4.0 | 57.40% | Coming soon | Coming soon |
| Agents' Last Exam | 39.5% | Coming soon | Coming soon |
| OSWorld 2.0 | 69.2% | 62.6% | Gemini 4 Argon |
| CWE-bench v1 | 68.0% | Coming soon | Coming soon |
| Terminal-Bench-Science 0.1 (6x verifier timeout) | 57.6% | Coming soon | Coming soon |
| Terminal-Bench 3.0 | Coming soon | 34.6% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 91.9% | Coming soon |
| BrowseComp | Coming soon | 92.2% | Coming soon |
| CyberGym | Coming soon | 84.5% | Coming soon |
| ExploitGym | Coming soon | 33.7% | Coming soon |
| Toolathlon | Coming soon | 58% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 85.8% | Coming soon |
| ApprenticeBench | Coming soon | 26% | Coming soon |

### Coding

- Winner: GPT-5.6 Sol
- Gemini 4 Argon public-lane score: 68.4 (Supported · #8/144)
- GPT-5.6 Sol public-lane score: 70.8 (Supported · #7/144)

| Benchmark | Gemini 4 Argon | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| DeepSWE | 77.9% | 72.7% | Gemini 4 Argon |
| FrontierSWE v2 | 55.1% | 32.2% | Gemini 4 Argon |
| Vibe Code Bench | 91.90% | Coming soon | Coming soon |
| PostTrainBench v1.1 | 45.3% | 36.2% | Gemini 4 Argon |
| Bug Hunt Bench | Coming soon | 42 fixes | Coming soon |
| SWE-bench Pro | Coming soon | 64.6% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 91.9% | Coming soon |
| FrontierCode 1.1 Extended | Coming soon | 60.6% | Coming soon |
| cursorBench32 | Coming soon | 67.2% | Coming soon |
| VulcanBench v3 | Coming soon | 87.0% | Coming soon |
| VulcanBench CII v1 | Coming soon | 86.5% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 82.6% | Coming soon |
| SWE-bench (Vals) | Coming soon | 96.2% | Coming soon |
| cursorBench40 | Coming soon | 41.7% | Coming soon |

### Reasoning

- Winner: Not comparable
- Gemini 4 Argon public-lane score: 77.1 (Unranked · 3 rankable rows)
- GPT-5.6 Sol public-lane score: 72.5 (#15/27)

| Benchmark | Gemini 4 Argon | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| Graphwalks BFS 128K | 99.7% | Coming soon | Coming soon |
| GraphWalks BFS 256K–1M | 84.2% | Coming soon | Coming soon |
| ARC-AGI-2 | Coming soon | 92.5% | Coming soon |
| ARC-AGI-3 | Coming soon | 7.8% | Coming soon |
| GeneBench-Pro | Coming soon | 28.7% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Gemini 4 Argon public-lane score: Coming soon
- GPT-5.6 Sol public-lane score: 88.6 (#4/49)

| Benchmark | Gemini 4 Argon | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| Chartography (no tools) | 71.6% | Coming soon | Coming soon |
| LVBench | 91.7% | Coming soon | Coming soon |
| MMMU-Pro | Coming soon | 83% | Coming soon |
| MMMU-Pro w/ Python | Coming soon | 84.6% | Coming soon |

### Knowledge

- Winner: GPT-5.6 Sol
- Gemini 4 Argon public-lane score: 72.9 (Supported · #11/170)
- GPT-5.6 Sol public-lane score: 78.5 (Supported · #8/170)

| Benchmark | Gemini 4 Argon | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| LABBench2 | 88.8% | 82.1% | Gemini 4 Argon |
| GPQA | Coming soon | 94.6% | Coming soon |
| GPQA-D | Coming soon | 94.6% | Coming soon |
| HLE-Verified | Coming soon | 54.5% | Coming soon |
| HealthBench Professional | Coming soon | 60.5% | Coming soon |
| HealthBench Hard | Coming soon | 33.1% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 95.2% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 89.1% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Gemini 4 Argon public-lane score: Coming soon
- GPT-5.6 Sol public-lane score: 87.7 (#28/124)

| Benchmark | Gemini 4 Argon | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| Gray Swan IPI (15 attempts) | 0.7% | 27.0% | Gemini 4 Argon |

### Mathematics

- Winner: Not comparable
- Gemini 4 Argon public-lane score: Coming soon
- GPT-5.6 Sol public-lane score: 96.8 (Unranked · 3 rankable rows)

| Benchmark | Gemini 4 Argon | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath (legacy) | Coming soon | 89% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 89.000% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 83.000% | Coming soon |

## FAQ

### Which is better overall, Gemini 4 Argon or GPT-5.6 Sol?

GPT-5.6 Sol is ahead overall on BenchLM right now.

### Where is the biggest gap between Gemini 4 Argon and GPT-5.6 Sol?

The widest category gap is in knowledge, where the averages are 72.9 for Gemini 4 Argon and 78.5 for GPT-5.6 Sol.

### How many benchmarks does Gemini 4 Argon cover on BenchLM?

Gemini 4 Argon currently has 17 sourced benchmark scores on BenchLM.

### How many benchmarks does GPT-5.6 Sol cover on BenchLM?

GPT-5.6 Sol currently has 39 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Gemini 4 Argon vs GPT-5.6 Terra](/compare/gemini-4-argon-vs-gpt-5-6-terra)
- [GPT-5.6 Sol vs GPT-5.6 Terra](/compare/gpt-5-6-sol-vs-gpt-5-6-terra)
- [Gemini 4 Argon vs GPT-5.6 Luna](/compare/gemini-4-argon-vs-gpt-5-6-luna)
- [GPT-5.6 Sol vs GPT-5.6 Luna](/compare/gpt-5-6-luna-vs-gpt-5-6-sol)

## Explore More

- [Gemini 4 Argon profile](/models/gemini-4-argon)
- [GPT-5.6 Sol profile](/models/gpt-5-6-sol)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)