# GPT-6.1 Sol vs Particle-1

> Side-by-side benchmark comparison for GPT-6.1 Sol and Particle-1 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-6-1-sol-vs-particle-1
- Last updated: October 29, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: GPT-6.1 Sol and Particle-1 share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Particle-1 has the lower published output-token price.
- GPT-6.1 Sol has the larger published context window at 1.05M.

## Model Snapshot

| Property | GPT-6.1 Sol | Particle-1 |
|----------|----------|----------|
| Creator | OpenAI | Particle AI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1.05M | 1M |
| Independent public score (not head-to-head) | 85.27 | null |
| Benchmarks Covered | 24 | 5 |
| Pricing (input/output) | $2.00 / $10.00 | $0.25 / $1.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-6.1 Sol public-lane score: 77.2 (Estimated · #5/135)
- Particle-1 public-lane score: Coming soon

| Benchmark | GPT-6.1 Sol | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| AutomationBench | 36.1% | Coming soon | Coming soon |
| Terminal-Bench-Science 0.1 | 57.0% | Coming soon | Coming soon |
| ExploitGym | 35.1% | Coming soon | Coming soon |
| MazeBench | 17% | Coming soon | Coming soon |
| Hermes Index | 57.1% | Coming soon | Coming soon |
| Hermes Bench | 73.9% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 79.9% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- GPT-6.1 Sol public-lane score: 70.3 (Supported · #10/156)
- Particle-1 public-lane score: Coming soon

| Benchmark | GPT-6.1 Sol | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| DeepSWE | 71.9% | 72.6% | Particle-1 |
| Bug Hunt Bench | 44.3 fixes | Coming soon | Coming soon |
| FrontierCode 2.0 | 39.0% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 79.9% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT-6.1 Sol public-lane score: 90.5 (#2/26)
- Particle-1 public-lane score: Coming soon

| Benchmark | GPT-6.1 Sol | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| STEMBench | 2.76 | Coming soon | Coming soon |
| ARC-AGI-1 | 96.50% | Coming soon | Coming soon |
| ARC-AGI-2 | 94.2% | Coming soon | Coming soon |
| ARC-AGI-3 | 52.7% | Coming soon | Coming soon |
| ARC-AGI-3 Provider Adapter | 96.18% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-6.1 Sol public-lane score: 88.2 (Unranked · 1 rankable row)
- Particle-1 public-lane score: Coming soon

| Benchmark | GPT-6.1 Sol | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| ExtractBench (LlamaIndex) | 95.31% | Coming soon | Coming soon |
| ExtractBench Pro | 12% | Coming soon | Coming soon |
| ParseBench | 69.70% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- GPT-6.1 Sol public-lane score: 86.2 (Supported · #3/179)
- Particle-1 public-lane score: Coming soon

| Benchmark | GPT-6.1 Sol | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| HealthBench (raw) | 56.7% | Coming soon | Coming soon |
| HealthBench (length-adjusted) | 58.5% | Coming soon | Coming soon |
| HealthBench Professional | 64.2% | Coming soon | Coming soon |
| HealthBench Professional (raw) | 67.2% | Coming soon | Coming soon |
| HealthBench Hard | 36.2% | Coming soon | Coming soon |
| GPQA-D | Coming soon | 90.4% | Coming soon |
| MMLU | Coming soon | 86.1% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- GPT-6.1 Sol public-lane score: 97.3 (Unranked · 2 rankable rows)
- Particle-1 public-lane score: Coming soon

| Benchmark | GPT-6.1 Sol | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 93.684% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 100.000% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between GPT-6.1 Sol and Particle-1?

Not yet. The models share only 1 sourced benchmark row, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [GPT-6.1 Sol vs GPT-6 Astra](/compare/gpt-6-1-sol-vs-gpt-6-astra)
- [Particle-1 vs GPT-6 Astra](/compare/gpt-6-astra-vs-particle-1)
- [GPT-6.1 Sol vs GPT-6.1 Terra](/compare/gpt-6-1-sol-vs-gpt-6-1-terra)
- [Particle-1 vs GPT-6.1 Terra](/compare/gpt-6-1-terra-vs-particle-1)

## Explore More

- [GPT-6.1 Sol profile](/models/gpt-6-1-sol)
- [Particle-1 profile](/models/particle-1)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)