# Pareto 26.9 vs Particle-1

> Side-by-side benchmark comparison for Pareto 26.9 and Particle-1 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/pareto-26-9-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: Pareto 26.9 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.
- Particle-1 has the larger published context window at 1M.

## Model Snapshot

| Property | Pareto 26.9 | Particle-1 |
|----------|----------|----------|
| Creator | Unbiased | Particle AI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | N/A | 1M |
| Independent public score (not head-to-head) | null | null |
| Benchmarks Covered | 4 | 5 |
| Pricing (input/output) | $2.50 / $7.50 | $0.25 / $1.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Pareto 26.9 public-lane score: Coming soon
- Particle-1 public-lane score: Coming soon

| Benchmark | Pareto 26.9 | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.0 | 51.00% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 79.9% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Pareto 26.9 public-lane score: Coming soon
- Particle-1 public-lane score: Coming soon

| Benchmark | Pareto 26.9 | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| DeepSWE | 74.0% | 72.6% | Pareto 26.9 |
| Terminal-Bench 2.1 | Coming soon | 79.9% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Pareto 26.9 public-lane score: Coming soon
- Particle-1 public-lane score: Coming soon

| Benchmark | Pareto 26.9 | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 78% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Pareto 26.9 public-lane score: Coming soon
- Particle-1 public-lane score: Coming soon

| Benchmark | Pareto 26.9 | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| HLE w/o tools | 49% | Coming soon | Coming soon |
| GPQA-D | Coming soon | 90.4% | Coming soon |
| MMLU | Coming soon | 86.1% | Coming soon |

## FAQ

### Is there enough evidence to pick between Pareto 26.9 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

- [Pareto 26.9 vs Pareto 26.10 Preview](/compare/pareto-26-10-preview-vs-pareto-26-9)
- [Particle-1 vs Pareto 26.10 Preview](/compare/pareto-26-10-preview-vs-particle-1)
- [Pareto 26.9 vs Gemini 4 Carbon](/compare/gemini-4-carbon-vs-pareto-26-9)
- [Particle-1 vs Gemini 4 Carbon](/compare/gemini-4-carbon-vs-particle-1)

## Explore More

- [Pareto 26.9 profile](/models/pareto-26-9)
- [Particle-1 profile](/models/particle-1)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)