honest comparison
Locally vs OpenAI API
The API sells you tokens. We rent you the machine that makes them. Past a certain volume, and at any level of privacy, the math flips hard.
| Locally | OpenAI API | |
|---|---|---|
| Pricing model | Flat: $129/mo for a 4090 | Per input + output token |
| 10M tokens a day | Still $129/mo | Hundreds to thousands $/mo |
| Your data | Never leaves your server | Sent to a third party |
| Model choice | Any open model, any quant | Their catalog only |
| Rate limits | None; it is your GPU | Tiered TPM/RPM caps |
| Fine-tunes & custom weights | Run anything, LoRA and all | Limited, priced separately |
| Frontier model quality | Best open weights (70B class) | State of the art closed models |
| Works offline / air-gapped | Yes | No |
| Best for | Volume, privacy, control | Occasional calls, frontier quality |
Pick Locally if...
You push serious volume, handle data you cannot legally or ethically ship to a third party, or just refuse rate limits on principle.
Pick OpenAI API if...
You make a handful of calls a day and need the absolute frontier closed model for every single one of them.