GPT-6.1 Sol Pro vs Particle-1
Price, context window & benchmark comparison
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Verdict: Particle-1 is 24.6× cheaper than GPT-6.1 Sol Pro on a typical 3:1 input/output mix. GPT-6.1 Sol Pro has the larger context window (1.1M vs 1M).
| GPT-6.1 Sol Pro | Particle-1 | |
|---|---|---|
| Input price / 1M | $2.00 | $0.05 |
| Output price / 1M | $10.00 | $0.50 |
| Blended price (3:1) | $4.00 | $0.16 |
| Cached input / 1M | $0.10 | $0.003 |
| Context window | 1.1M | 1M |
| Max output | 128K | 131K |
| Intelligence index | — | — |
| Coding index | — | — |
| Providers | 7 | — |
| Best provider uptime (30m) | 100.0% | — |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-09-29 | 2026-10-28 |
| Retirement | — | — |
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FAQ
Which is cheaper, GPT-6.1 Sol Pro or Particle-1?
Particle-1 is 24.6× cheaper than GPT-6.1 Sol Pro on a typical 3:1 input/output mix.
GPT-6.1 Sol Pro vs Particle-1: which has a bigger context window?
GPT-6.1 Sol Pro: 1,050,000 tokens. Particle-1: 1,048,576 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: GPT-6.1 Sol Pro ≈ $9,000, Particle-1 ≈ $350.00.
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