AI Clients Dart

Type-safe Dart clients for OpenAI, Anthropic, Google Gemini, Mistral, Ollama, and more — all sharing a consistent API shape. Built for Flutter apps, backends, CLIs, and server-side Dart across every platform.

Table of Contents

• Quickstart
• Packages
• Why choose these clients?
• Used By
• For Coding Agents
• Sponsor
• License

Quickstart

The AI provider clients share a consistent shape — pick one and start with a few lines:

OpenAI

dependencies:
  openai_dart: ^3.0.0

import 'package:openai_dart/openai_dart.dart';

Future<void> main() async {
  final client = OpenAIClient.fromEnvironment();

  try {
    final response = await client.responses.create(
      CreateResponseRequest(
        model: 'gpt-5.4',
        input: ResponseInput.text('What is the capital of France?'),
      ),
    );

    print(response.outputText);
  } finally {
    client.close();
  }
}

Anthropic

dependencies:
  anthropic_sdk_dart: ^1.4.0

import 'package:anthropic_sdk_dart/anthropic_sdk_dart.dart';

Future<void> main() async {
  final client = AnthropicClient.fromEnvironment();

  try {
    final response = await client.messages.create(
      MessageCreateRequest(
        model: 'claude-sonnet-4-6',
        maxTokens: 1024,
        messages: [InputMessage.user('What is the capital of France?')],
      ),
    );

    print(response.text);
  } finally {
    client.close();
  }
}

Google Gemini

dependencies:
  googleai_dart: ^4.0.0

import 'package:googleai_dart/googleai_dart.dart';

Future<void> main() async {
  final client = GoogleAIClient.fromEnvironment();

  try {
    final response = await client.models.generateContent(
      model: 'gemini-2.5-flash',
      request: GenerateContentRequest(
        contents: [Content.text('Explain why Dart works well for APIs.')],
      ),
    );

    print(response.text);
  } finally {
    client.close();
  }
}

Ollama

dependencies:
  ollama_dart: ^2.0.0

import 'package:ollama_dart/ollama_dart.dart';

Future<void> main() async {
  final client = OllamaClient();

  try {
    final response = await client.chat.create(
      request: ChatRequest(
        model: 'gpt-oss',
        messages: [ChatMessage.user('Explain what Dart isolates do.')],
      ),
    );

    print(response.message?.content);
  } finally {
    client.close();
  }
}

Packages

Package	Description	Version	Downloads
openai_dart	OpenAI — Responses, Chat Completions, images, audio, realtime
anthropic_sdk_dart	Anthropic — Claude messages, streaming, tools, extended thinking
googleai_dart	Google AI / Vertex AI — Gemini generation, embeddings, Live API
mistralai_dart	Mistral AI — chat, embeddings, OCR, TTS, reasoning, agents
ollama_dart	Ollama — local chat, streaming, embeddings, tool calling
open_responses	OpenResponses — one typed interface, multiple providers
chromadb	ChromaDB — vector search, collections, multi-tenant RAG
openai_realtime_dart	OpenAI Realtime — lower-level WebSocket sessions
tavily_dart	Tavily — web search and research for agents and RAG

Why choose these clients?

• Pure Dart — works everywhere: Flutter apps, backends, CLIs, and server-side Dart across iOS, Android, macOS, Windows, Linux, and Web.
• Type-safe — sealed classes, typed request/response models, and ergonomic helpers.
• Consistent shape — AI provider clients share fromEnvironment() for config, similar resource methods, and close() for cleanup.
• Minimal dependencies — just http, logging, meta, and where needed web_socket.
• Strict semver — follows semver.org so downstream packages can depend on stable, predictable version ranges.

Used By

These open-source packages and apps use one or more clients from this repo. For more, see the GitHub dependents graph.

Packages

Package	Downloads
langchain_dart
dartantic
genkit-dart

Apps

App	Stars
Anx Reader
ApiDash
Lotti

For Coding Agents

Use llms.txt for package hubs, llms-ctx.txt for the non-optional concatenated context bundle, and llms-ctx-full.txt for the full bundle including optional sources.

Sponsor

If these packages are useful to you or your company, please consider sponsoring the project. Development and maintenance are provided to the community for free, but integration tests against real APIs and the tooling required to build and verify releases still have real costs. Your support, at any level, helps keep these packages maintained and free for the Dart & Flutter community.

License

AI Clients Dart is licensed under the MIT License.