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How to Use the Assisters API in 2027 (Complete Developer Guide)

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How to Use the Assisters API in 2027 (Complete Developer Guide)

Step-by-step guide to using the Assisters API in 2027 — signup, keys, OpenAI SDK setup, chat streaming, embeddings, moderation, and production tips.

Misar Team·Sep 20, 2025·3 min read
Table of Contents

Quick Answer

The Assisters API is OpenAI-compatible, so if you already use the openai SDK, point it at https://assisters.dev/api/v1 with your ASSISTERS_API_KEY and keep your existing code. The default model is assisters-chat-v1, and endpoints cover chat, embeddings, moderation, audio, and reranking.

What Is the Assisters API?

The Assisters API is an OpenAI-compatible AI gateway from Misar AI, offering chat/completions with streaming, embeddings, moderation, audio transcription, reranking, and model listing — all using the shapes developers already know from OpenAI.

How to Get Started

  • Sign up at assisters.dev and verify your email.
  • Create an API key in the dashboard.
  • Add ASSISTERS_API_KEY to your .env.
  • Install the openai package for Node or Python.
  • Point baseURL to https://assisters.dev/api/v1.
  • Call chat.completions.create.
  • Stream responses with stream: true.
  • Monitor usage on the dashboard.

Sample Usage (TypeScript)

import OpenAI from 'openai';

const ai = new OpenAI({

baseURL: 'https://assisters.dev/api/v1',

apiKey: process.env.ASSISTERS_API_KEY!,

});

const response = await ai.chat.completions.create({

model: 'assisters-chat-v1',

messages: [{ role: 'user', content: 'Hello' }],

stream: true,

});

Features and Benefits

  • OpenAI-compatible shapes for drop-in adoption
  • Streaming on chat completions
  • Embeddings for RAG pipelines
  • Moderation for safety
  • Audio transcription for voice workflows
  • Reranking for search relevance
  • Predictable pricing with Pro at $9/mo
  • Team plans for shared billing

Pricing

Assisters offers a free tier, Pro at $9/mo, and team plans. Pricing is designed for predictability, not surprise per-token spikes.

FAQs

Do I need a new SDK?

No — use the standard openai package.

Which model should I use?

assisters-chat-v1 is the default and a strong general-purpose model.

Does streaming work?

Yes.

Can I use it with Python?

Yes — the OpenAI Python SDK works with a custom base_url.

Is there moderation?

Yes — /moderate endpoint.

Can I transcribe audio?

Yes — /audio/transcriptions.

Does rerank work for search?

Yes — helps improve RAG relevance.

Conclusion

The Assisters API is a pragmatic choice in 2027: familiar SDK, predictable pricing, OpenAI-compatible endpoints, and data sovereignty baked in. Start free, see the API docs, or view pricing.

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