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The best private LLM API for open models in 2026 is Off Grid AI Boost, because it’s the only one here that pairs a promise to never store or train on your prompts with a fixed monthly price and serving code that will be open source. If you need an API live today, DeepInfra doesn’t store or train either, and it’s the cheapest per token.
Boost is a pre-order now, API key by January 2027. We haven’t run it as a customer, so it’s ranked on what it promises, and we say where that promise isn’t backed by a published policy yet.
We make Off Grid AI Boost, so weigh that, and every price below links to its source.
The private LLM APIs compared
Checked 16 November 2026 on each provider’s own pricing, privacy and docs pages. Prices are per 1M tokens, input / output, for DeepSeek V4.1 Flash unless we say otherwise.
| Stores prompts? | Trains on them? | Price | Limits | |
|---|---|---|---|---|
| 1. Off Grid AI Boost | No (a stated promise; the full policy comes with launch) | No (same) | From $4.99 a month, fixed. Pre-order now, API key by January 2027 | Limits not yet published |
| 2. DeepInfra | No | No | $0.098 / $0.294 | 200 requests at a time per model |
| 3. Featherless | No | Not stated | Chat $25 a month flat; Developer $50 a month in credits | Chat: 4 concurrency units, 32K context, people only |
| 4. Fireworks | No, by default | Not stated | $0.30 / $1.20 | Not on the pricing page |
| 5. NanoGPT | No, by default | No | PRO $12 a month | 60M input tokens a week |
| 6. Chutes | No policy on the page; some models run in secure enclaves | Not stated | $0.30 / $1.20 | Not published |
| 7. Groq | Not by default, but up to 30 days for abuse checks | Not stated | Pricing page shows no prices | qwen3.8-27b: 30 requests a minute, 1,000 a day |
| 8. OpenRouter | Depends on the provider, unless you turn on zero retention | No | Each model’s price plus a 5.5% fee on credits | Free models: 50 requests a day |
| 9. Together AI | Yes, by default | Off by default | $0.30 / $1.20 | Not on the pricing page |
| 10. DeepSeek API | Yes, in China | May train; opt out by email | $0.30 / $1.20, or $0.15 / $0.60 off-peak | 2,500 requests at a time |
Off Grid AI Boost limits not yet published. Every other fact comes from the pages linked in each section below.
How we picked
Every API here serves open models like Qwen and DeepSeek. We ranked them on four things, in this order:
- No storage by default. Your prompts aren’t kept unless you ask, with no setting to remember.
- No training. The provider says plainly that it won’t train on your prompts.
- Code you can check. You can read how your prompts are handled and run the same thing on your own hardware.
- A fixed price. You know the bill before the month starts.
We didn’t rank on model count or price per token. Several providers below beat Boost on both today.
1. Off Grid AI Boost
What it is. Hosted inference for open models on our own GPUs. The Boost page names Qwen 3.8 (it doesn’t say which size yet) and DeepSeek V4.1 Flash, and lists text, vision, speech, voice, embeddings, image and video. One API key works for every model on Boost.
Privacy. “We don’t keep your prompts or train on them” is Boost’s stated promise. The full policy comes with launch, so there’s no Boost privacy policy or data agreement to read yet. The serving code will be open source, so you’ll be able to check how prompts are handled and move to your own hardware if you want to leave.
Price. One fixed price, monthly or yearly, with no per-token meter. Cohort 1 pays half the regular price for as long as they stay. Cohort 2 gets 25% off and cohort 3 gets 10% off.
| Plan | Cohort 1 | Regular | Limits |
|---|---|---|---|
| A | $4.99 a month | $9.99 a month | Limits not yet published |
| B (recommended) | $9.99 a month | $19.99 a month | Limits not yet published |
| C | $49.99 a month | $99.99 a month | Limits not yet published |
| D | $99.99 a month | $199.99 a month | Limits not yet published |
Yearly costs 10 months’ price, so you get two months free. The Boost page shows “save 58%” because it compares a cohort 1 year with 12 months at the regular price.
Best for. Apps and agents that send prompts you’d rather nobody kept, where you want the same bill every month.
The catch. It isn’t live. You pre-order now and your API key arrives by January 2027. The page doesn’t say how much use each plan includes, and the four plans list the same features. The serving code isn’t released yet. We wrote more about how Boost works in a flat-price, private API for open models.
2. DeepInfra
What it is. A per-token host with a long list of open models and some of the lowest prices around.
Privacy. Its data privacy docs say it doesn’t store your prompts or train on them.
Price. Per token, with no plan. DeepSeek-V4.1-Flash-1017 is $0.098 in / $0.294 out, and Qwen3.8-Flash is $0.113 / $0.382 (pricing).
Limits. 200 requests at a time per model.
Best for. The private choice you can use today, at the lowest per-token price on this list.
The catch. The bill moves with your usage, and the serving code isn’t open for you to check.
3. Featherless
What it is. A host for a big catalogue of open models, including the Qwen 3.6 and DeepSeek 4 families, with a flat plan for chatting.
Privacy. Its privacy page says “We do not collect or store prompts or completions.” It doesn’t mention training.
Price. Chat is $25 a month flat. Developer is $50 a month in credits, billed per token. Business is a custom contract (pricing).
Limits. Chat gives 4 concurrency units and 32K context, and it’s for people chatting only, so no app or API traffic and no background automation. Developer gives 100 units and up to 256K context.
Best for. Trying lots of different open models with a flat bill, if you’re the one typing.
The catch. The flat plan can’t sit behind your app. For that you’re on per-token credits.
4. Fireworks
What it is. A per-token host for open models, with cheaper spot prices on some.
Privacy. The pricing page states “Zero data retention by default.” We didn’t find a statement on training.
Price. DeepSeek V4.1 Flash is $0.30 in / $1.20 out, or $0.21 / $0.84 on spot. Qwen 3.8 Max is $2 / $6.
Limits. Not on the pricing page.
Best for. Production apps that need zero retention without changing a setting.
The catch. Per-token billing, and no training statement on the page we checked.
5. NanoGPT
What it is. A subscription that covers many open models, including GLM, DeepSeek, Kimi, MiniMax, MiMo and Qwen.
Privacy. Its privacy policy says it doesn’t store prompts by default and doesn’t train on them. The model providers behind it follow their own policies.
Price. PRO is $12 a month (pricing). It was $8 until 12 May 2026.
Limits. 60M input tokens a week, resetting on Monday. Output on included models is free, and you get 100 images a day. Concurrency caps exist but aren’t published.
Best for. A cheap monthly plan with published weekly limits.
The catch. Your prompt passes to a model provider with its own policy, so the promise covers NanoGPT, not every hop.
6. Chutes
What it is. A per-token host where some models run inside secure hardware enclaves, marked TEE.
Privacy. A TEE model like Qwen3.8-27B-TEE runs inside secure hardware meant to keep your prompt hidden, even from the host. That’s a stronger technical guarantee than a written promise. The pricing page doesn’t state a retention policy.
Price. Pay as you go. Qwen3.8-27B-TEE is $0.039 in / $1.25 out, and DeepSeek-V4.1-Flash-1017 is $0.30 / $1.20. “Monthly plans are no longer sold.”
Limits. Not published.
Best for. Prompts sensitive enough that you want hardware isolation, on the models that offer it.
The catch. Only some models run in enclaves, and there’s no fixed plan any more.
7. Groq
What it is. A host built for speed on its own chips. It carries qwen3.8-27b but no DeepSeek.
Privacy. Its data docs say it doesn’t keep your data by default, but it may hold it for up to 30 days for abuse checks. Training isn’t mentioned.
Price. Per token. Its pricing page showed no prices when we checked.
Limits. qwen3.8-27b allows 30 requests a minute, 1,000 a day and 200K tokens a day (rate limits).
Best for. Low-latency apps, like voice, where speed matters most.
The catch. The 30-day abuse hold means “not kept” has an exception.
8. OpenRouter
What it is. A router to more than 600 models from many providers, behind one key.
Privacy. OpenRouter doesn’t train on your prompts. Zero-retention routing is available on every plan, but it’s a setting. Leave it off and your request can go to any provider, each with its own policy.
Price. No plan. You buy credits with a 5.5% fee, then pay each model’s price (pricing).
Limits. Free models allow 50 requests a day, or 1,000 a day after you buy $10 of credit, at 20 requests a minute.
Best for. The widest model choice, if you remember to turn on zero retention.
The catch. Privacy is opt-in, and the bill moves with your usage.
9. Together AI
What it is. A large per-token host for open models.
Privacy. Together stores prompts by default. Training is off by default, and zero retention is a setting an admin turns on (privacy docs).
Price. Qwen3.8 Flash is $0.15 in / $0.47 out, and DeepSeek V4.1 Flash is $0.30 / $1.20 (pricing).
Limits. Not on the pricing page.
Best for. Teams already on Together, with an admin who’ll turn on zero retention.
The catch. Out of the box, your prompts are kept.
10. DeepSeek API
What it is. DeepSeek’s own API, from the company that makes the models.
Privacy. Its privacy policy says it stores data in China and may use it for training. You opt out by email.
Price. V4.1 Flash is $0.30 in / $1.20 out at peak and $0.15 / $0.60 off-peak, with cache hits at $0.006. V4 Pro is $1.32 / $3.96 (pricing).
Limits. 2,500 requests at a time on Flash.
Best for. Cheap DeepSeek calls where privacy doesn’t matter, like public data.
The catch. It’s the least private option here. Anything sensitive should go to one of the hosts above.
The most private option is your own device
No API beats a model that runs on your own phone or computer, because your prompt never leaves it. The free Off Grid AI apps run open models fully on your own device, with no account. Use an API when you need a bigger model, more speed or a key your app can call.
Which should you pick?
- You want a fixed bill and a no-storage promise: Off Grid AI Boost, if you can wait for January 2027.
- You need a private API today, as cheap as possible: DeepInfra.
- You want hardware isolation on sensitive prompts: Chutes, on its TEE models.
- You want zero retention by default for production: Fireworks.
- You want a cheap monthly plan with published limits: NanoGPT.
- You need 600+ models behind one key: OpenRouter, with zero retention turned on.
- Your prompts must never leave your hands: the free Off Grid AI apps on your own device.
Everything in one app
Most apps on this page do one job. Off Grid AI does all of these, on your own computer and phone, in one app.
Free, on every device
- Local chat with open models, no account
- Answers from your files, with the source shown
- Images made on your own GPU
- Voice in and out
- A local API for your own tools
- iPhone and Android with on-device models
Pro, $34.99 once
- Memory of your screens, meetings, mail and docs
- Meetings recorded without a bot, summarised locally
- Dictation into any app on your computer
- Actions in Gmail, Linear, Jira and Notion, only with your yes
- God, a chief of staff that briefs you and preps your meetings
- Web Use and Computer Use for tasks in your own browser and apps
- Reflect: where your time went, by project and person
- Vault, Clipboard and Sync on up to 5 devices
They work together
- A call becomes a transcript. Its decisions become to-dos. The follow-up email waits in Actions for your yes.
- God's morning brief draws on all of it: yesterday's screens, today's meetings, what people owe you.
- Vault fills logins in the same browser where Web Use runs a task, so the agent signs in and your password never goes to a model.
That is a notetaker, a dictation app, a time tracker, a password manager, a clipboard manager and an AI assistant, for one price. Get Pro for $34.99 once
Which LLM API doesn’t store or train on prompts?
DeepInfra and NanoGPT both say they don’t store prompts by default or train on them. Fireworks has zero retention by default, and Featherless doesn’t store prompts. Off Grid AI Boost promises not to store or train, and its full policy comes with launch.
Is Off Grid AI Boost live?
No. You can pre-order now, and your API key arrives by January 2027. Your plan starts then.
How much use does each Boost plan include?
Limits not yet published. The Boost page lists the same features on all four plans.
Is the Boost serving code open source?
Not yet. The serving code will be open source, so you can check it and run it on your own hardware.
Does OpenRouter keep my prompts?
OpenRouter doesn’t train on them. Zero-retention routing is a setting, and without it your request can reach providers with their own policies.
Is the DeepSeek API private?
No. DeepSeek stores data in China and may train on it unless you opt out by email. The same models are on DeepInfra, Fireworks and Together.