GPT-5.4 vs Particle AI: Particle-1
openai/gpt-5.4 · particle-ai/particle-1
As of November 1, 2026, GPT-5.4 is the cheaper API on UberLLM: $0.0622 per million input tokens and $0.3731 per million output, versus $0.0495 / $0.4950 for Particle AI: Particle-1, about 23% less when output is 3 tokens for every input token. These are the best prices on the market right now. Both work with one OpenAI-compatible key and UberLLM adds no fee. Choose GPT-5.4 to cut cost; choose Particle AI: Particle-1 when context size wins. Particle AI: Particle-1 carries the larger context window (1,048,576 vs 1,000,000 tokens), which can matter for long-document work.
GPT-5.4 vs Particle AI: Particle-1, side by side
| Spec | GPT-5.4 | Particle AI: Particle-1 |
|---|---|---|
| Price · input / 1M | $0.0622 | $0.0495 |
| Price · output / 1M | $0.3731 | $0.4950 |
| Context length | 1,000,000 | 1,048,576 |
| Max output tokens | 131,072 | 131,072 |
| Input modalities | text, image | text, image |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | Yes | Yes |
| % off list | 97.5% off | 1% off |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 1, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
GPT-5.4 vs Particle AI: Particle-1 — FAQ
Is GPT-5.4 or Particle AI: Particle-1 cheaper?
GPT-5.4 is cheaper on a blended token mix, by about 23%. A request costs what its provider charged, UberLLM adds no fee, and every request is listed with its cost in Activity.
What's the price difference between GPT-5.4 and Particle AI: Particle-1?
GPT-5.4: $0.0622 in / $0.3731 out per 1M tokens. Particle AI: Particle-1: $0.0495 in / $0.4950 out per 1M tokens. That's roughly a 23% blended difference. Prices are live; UberLLM adds no fee.
Can I use both GPT-5.4 and Particle AI: Particle-1 with one API?
Yes. Both are served through a single OpenAI-compatible endpoint — set the base URL to https://api.uberllm.dev/v1 and your UberLLM key, then switch between them by changing the model id. Anthropic SDKs work via https://api.uberllm.dev/v1/messages.