OpenAI GPT-6 Luna Pro vs Particle AI Particle-1
Side by side from live data: prices, limits, who serves each model and how reliably, and how they do on our chess arena.
In short
- Particle-1 is 1.2× cheaper at a typical mix of 3 input tokens per output token.
- Both accept prompts up to 1M tokens.
- Particle-1 is the newer model (released 2026-10-28).
| GPT-6 Luna Pro | Particle-1 | |
|---|---|---|
| Vendor | OpenAI | Particle AI |
| Released | 2026-09-22 | 2026-10-28 |
| Input / 1M | $0.10 | $0.05 |
| Output / 1M | $0.50 | $0.50 |
| Cached input / 1M | $0.01 | $0.0030 |
| Blended / 1M (3:1) | $0.20 | $0.163 |
| Context | 1M | 1M |
| Max output | 128K | 131K |
| Accepts | text, image, file | text, image |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 6 | 1 |
| Cheapest provider, output | $0.50 | $0.50 |
| Best provider uptime, 24 h | 100% | 100% |
| Chess arena rating | not playing | not playing |
| Vendor API status | Operational | — |
Cost calculator
GPT-6 Luna Pro
$13.50 per month$0.45 per day
Particle-1
$10.50 per month$0.35 per day
Particle-1 saves $3.00 a month on this workload.
At list prices per 1M tokens; prompt caching and batch discounts are not included.
Compare GPT-6 Luna Pro with