Particle AI: Particle-1 vs Anthropic: Claude Sonnet 5.5
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-11-02.
| Particle AI: Particle-1 | Anthropic: Claude Sonnet 5.5 | |
|---|---|---|
| Vendor | particle-ai | anthropic |
| Quality Score | 100 | 100 |
| Input Price | $0.05/M | $2.00/M |
| Output Price | $0.50/M | $10.00/M |
| Context Window | 1,048,576 | 1,000,000 |
| Max Output | 131,072 | 128,000 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, Particle-1 costs $0.17 and Claude Sonnet 5.5 costs $4.50, so Particle-1 is about 25.7 times cheaper for the same work.
Both take in a similar amount of text: 1,048,576 and 1,000,000 tokens, about 1,573 and 1,500 pages.
Across the 10 tasks where they differ, Particle-1 scores higher on 10 (SQL Generation, Code Completion, Code Documentation and others).
Particle-1 was released in October 2026 and Claude Sonnet 5.5 in September 2026.
Pick Particle-1 if you need lower cost or the stronger all-round task scores.
Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.
Who wins by task?
| Task | Particle AI: Particle-1 | Anthropic: Claude Sonnet 5.5 |
|---|---|---|
| SQL Generation | 133 | 132 |
| Code Completion | 131 | 117 |
| Code Documentation | 131 | 129 |
| Regex Writing | 119 | 117 |
| CSV / Spreadsheet Cleanup | 133 | 132 |
| JSON Extraction | 131 | 121 |
| Bulk Data Labeling | 129 | 118 |
| Long-Document Summarization | 137 | 136 |
| Short-Form Summarization | 123 | 113 |
| Blog Post Writing | 121 | 120 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →