# Gemini 4 Carbon vs GPT-6 Sol

> Side-by-side benchmark comparison for Gemini 4 Carbon and GPT-6 Sol across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-4-carbon-vs-gpt-6-sol
- Last updated: October 28, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Gemini 4 Carbon leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Gemini 4 Carbon has the higher overall point estimate 88.42 to 78. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in coding, where the averages are 82.2 for Gemini 4 Carbon and 66.6 for GPT-6 Sol.
- The biggest single benchmark swing is ExploitGym in Agentic, with scores of 53.5% and 22.1%.
- GPT-6 Sol also has the larger context window at 1.05M.

## Model Snapshot

| Property | Gemini 4 Carbon | GPT-6 Sol |
|----------|----------|----------|
| Creator | Google | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | null | 1.05M |
| Overall Score | 88.42 | 78 |
| Benchmarks Covered | 9 | 24 |
| Pricing (input/output) | $2.00 / $10.00 | $2.00 / $10.00 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Gemini 4 Carbon public-lane score: Coming soon
- GPT-6 Sol public-lane score: 58.1 (Supported · #35/134)

| Benchmark | Gemini 4 Carbon | GPT-6 Sol | Winner |
|-----------|-----------|-----------|--------|
| AutomationBench | 53.9% | 33.2% | Gemini 4 Carbon |
| OSWorld 2.1 Offline | 81.5% | Coming soon | Coming soon |
| CWE-bench v1 | 71.0% | 52.0% | Gemini 4 Carbon |
| ExploitGym | 53.5% | 22.1% | Gemini 4 Carbon |
| Agents' Last Exam | Coming soon | 56.4% | Coming soon |
| OSWorld 2.0 | Coming soon | 60.5% | Coming soon |
| Hermes Index | Coming soon | 44.1% | Coming soon |
| Hermes Bench | Coming soon | 73.5% | Coming soon |
| MazeBench | Coming soon | 7% | Coming soon |

### Coding

- Winner: Gemini 4 Carbon
- Gemini 4 Carbon public-lane score: 82.2 (Supported · #3/156)
- GPT-6 Sol public-lane score: 66.6 (Supported · #12/156)

| Benchmark | Gemini 4 Carbon | GPT-6 Sol | Winner |
|-----------|-----------|-----------|--------|
| FrontierSWE v2 | 61.2% | Coming soon | Coming soon |
| DeepSWE | Coming soon | 68.8% | Coming soon |
| FrontierCode 2.0 | Coming soon | 34.3% | Coming soon |

### Reasoning

- Winner: Not comparable
- Gemini 4 Carbon public-lane score: 79.5 (Unranked · 2 rankable rows)
- GPT-6 Sol public-lane score: 73.1 (#14/26)

| Benchmark | Gemini 4 Carbon | GPT-6 Sol | Winner |
|-----------|-----------|-----------|--------|
| GraphWalks BFS 256K–1M | 96.2% | Coming soon | Coming soon |
| ARC-AGI-1 | Coming soon | 95.50% | Coming soon |
| ARC-AGI-2 | Coming soon | 89.6% | Coming soon |
| ARC-AGI-3 | Coming soon | 4.6% | Coming soon |
| ARC-AGI-3 Provider Adapter | Coming soon | 23.03% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Gemini 4 Carbon public-lane score: Coming soon
- GPT-6 Sol public-lane score: 87.5 (Unranked · 1 rankable row)

| Benchmark | Gemini 4 Carbon | GPT-6 Sol | Winner |
|-----------|-----------|-----------|--------|
| Chartography (no tools) | 72.5% | Coming soon | Coming soon |
| Blueprint-Bench 2 | 58.6% | Coming soon | Coming soon |
| ExtractBench (LlamaIndex) | Coming soon | 94.57% | Coming soon |
| ParseBench | Coming soon | 68.89% | Coming soon |

### Knowledge

- Winner: Directional only
- Gemini 4 Carbon public-lane score: 88.2 (Supported · #2/178)
- GPT-6 Sol public-lane score: 80.1 (Estimated · #10/178)

| Benchmark | Gemini 4 Carbon | GPT-6 Sol | Winner |
|-----------|-----------|-----------|--------|
| HealthBench (raw) | Coming soon | 47.1% | Coming soon |
| HealthBench (length-adjusted) | Coming soon | 53.2% | Coming soon |
| HealthBench Professional | Coming soon | 60.8% | Coming soon |
| HealthBench Professional (raw) | Coming soon | 59.5% | Coming soon |
| HealthBench Hard | Coming soon | 30.1% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Gemini 4 Carbon public-lane score: Coming soon
- GPT-6 Sol public-lane score: Coming soon

| Benchmark | Gemini 4 Carbon | GPT-6 Sol | Winner |
|-----------|-----------|-----------|--------|
| Gray Swan IPI (15 attempts) | 0.0% | 10.1% | Gemini 4 Carbon |

### Mathematics

- Winner: Not comparable
- Gemini 4 Carbon public-lane score: Coming soon
- GPT-6 Sol public-lane score: 97.3 (Unranked · 2 rankable rows)

| Benchmark | Gemini 4 Carbon | GPT-6 Sol | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | Coming soon | 89.825% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 90.000% | Coming soon |

## FAQ

### Which is better overall, Gemini 4 Carbon or GPT-6 Sol?

Gemini 4 Carbon has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Gemini 4 Carbon and GPT-6 Sol?

The widest category gap is in coding, where the averages are 82.2 for Gemini 4 Carbon and 66.6 for GPT-6 Sol.

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

Gemini 4 Carbon currently has 9 sourced benchmark scores on BenchLM.

### How many benchmarks does GPT-6 Sol cover on BenchLM?

GPT-6 Sol currently has 24 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Gemini 4 Carbon vs Gemini 4 Argon](/compare/gemini-4-argon-vs-gemini-4-carbon)
- [GPT-6 Sol vs Gemini 4 Argon](/compare/gemini-4-argon-vs-gpt-6-sol)
- [Gemini 4 Carbon vs GPT-6 Astra](/compare/gemini-4-carbon-vs-gpt-6-astra)
- [GPT-6 Sol vs GPT-6 Astra](/compare/gpt-6-astra-vs-gpt-6-sol)

## Explore More

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