# AI Agent Tools With Open-Weight Model Support

> Source: https://theagentsindex.com/collections/ai-agent-tools-with-open-weight-model-support (curated, quality-gated, re-verified)

Being "model-agnostic" and supporting an open-weight model are different claims, and this collection only counts the second one: a tool is listed here because its own published listing names a specific open-weight family — Llama, Mistral, DeepSeek, Qwen, GLM or Kimi among them — or explicit local execution through a runtime like Ollama or LM Studio. 24 of the 94 tools in this index clear that bar.

Several tools that look like candidates fail on exactly that distinction rather than on capability. [LangChain](/langchain) describes its model support as "Model-agnostic (any LLM)", [Vapi](/vapi) as "Model-agnostic (bring your own)", [Retell AI](/retell-ai) as "Model-agnostic (choose your LLM)", and [LangGraph](/langgraph) names "OpenAI, Anthropic, Google, and more" — three closed providers and an "and more". Each of the four may well run an open-weight model; nothing any of them publishes says so, so none of them is counted here.

By category: 5 of 14 [agent frameworks](/category/frameworks) (Microsoft Agent Framework, Pydantic AI, Agno, Google ADK, CrewAI), 8 of 25 [coding agents](/category/coding-agents) (Cline, Aider, Juggler, OpenAI Codex CLI, OpenCode, Zot, Zed and Junie, which JetBrains' own docs confirm can point at a local Ollama or LiteLLM runtime alongside its frontier-model options), 6 of 16 [agent platforms](/category/agent-platforms) (n8n, Dify, Botpress, OpenClaw, Vecbase), 3 of 12 [voice agents](/category/voice-agents) (ElevenLabs Conversational AI, Deepgram Voice Agent API, Cartesia) and 3 of 11 [research agents](/category/research-agents) (GPT Researcher, Perplexity and Genspark). Genspark is the one entry where the open-weight model is the vendor's choice rather than yours: its Super Agent blends nine LLMs, DeepSeek among them, and you do not pick which one answers. Everywhere else on this page the open weights are something you select, host or point the tool at.

Our remaining categories — [support agents](/category/support-agents), [sales & marketing agents](/category/sales-marketing-agents) and the newer [agent tools](/category/agent-tools) — have no entry here at all. Every listing in all three is closed-model and cloud-only by its own published record.

| Name | What it is | Why it's here | Pricing | API |
| --- | --- | --- | --- | --- |
| [Microsoft Agent Framework](https://theagentsindex.com/microsoft-agent-framework.md) | Microsoft's unified, MIT-licensed agent SDK for .NET and Python: the supported successor to AutoGen and Semantic Kernel. | Builds an agent from Azure OpenAI, OpenAI, Microsoft Foundry, Anthropic Claude, local models via Ollama or a custom provider — genuinely model-agnostic despite the Microsoft branding. | — | Yes |
| [Pydantic AI](https://theagentsindex.com/pydantic-ai.md) | The Python AI SDK for type-safe agents, realtime voice, image generation and embeddings, with every model a string swap away. | Model-agnostic across OpenAI, Anthropic, Gemini, Mistral, Cohere, DeepSeek, Grok, Bedrock and local models via Ollama — one of the widest named provider lists in this collection. | — | — |
| [Agno](https://theagentsindex.com/agno.md) | An Apache 2.0 Python agent SDK and AgentOS runtime, with a Control Plane you run in your own cloud. | Interchanges 20+ LLM providers including Ollama for local models without rewriting agent code, and a free AgentOS Control Plane runs entirely on your own machine for local development. | — | Yes |
| [Google Agent Development Kit](https://theagentsindex.com/google-adk.md) | Google's open-source, code-first agent SDK with five language runtimes (Python, TypeScript, Go, Java, Kotlin), native A2A and MCP support, and an optional managed runtime on Google Cloud. | Optimized for Gemini but genuinely model-agnostic through a LiteLLM integration — OpenAI, Anthropic Claude, Cohere, local Ollama models and 100+ other providers are all reachable the same way. | — | Yes |
| [CrewAI](https://theagentsindex.com/crewai.md) | Open-source Python framework for role-based multi-agent crews, with a hosted build and runtime that adds enterprise governance, native SDKs for the major LLMs, and Ollama via LiteLLM. | Its integrations list routes through LiteLLM to providers beyond the OpenAI, Gemini and Hugging Face options it names directly, reaching local and self-hosted models via Ollama. | — | Yes |
| [n8n](https://theagentsindex.com/n8n.md) | Source-available workflow automation with native AI-agent nodes and 500+ integrations. Self-hostable free, or on n8n Cloud from €20/month. | Its native AI-agent and LLM nodes list OpenAI, Anthropic, Ollama and more — wire a local Ollama model into the same visual canvas as any hosted provider. | — | Yes |
| [Dify](https://theagentsindex.com/dify.md) | Open-source, visual platform for building production LLM apps and agents, self-host it or run it in the cloud. | Integrates hundreds of LLMs from dozens of providers, explicitly including open and local models alongside OpenAI, Anthropic and Google, so a node can be swapped to a self-hosted model without rebuilding the flow. | — | Yes |
| [Botpress](https://theagentsindex.com/botpress.md) | An open-source (MIT) AI agent platform for customer support, with bi-directional MCP support, webchat, WhatsApp and voice channels. Self-host free or use the managed cloud from $0/month. | Model-agnostic across OpenAI, Anthropic Claude, Google Gemini and open-weight models, per its own published spec. | — | Yes |
| [Cline](https://theagentsindex.com/cline.md) | The open-source coding agent. Bring your own key. Runs in your editor, terminal, and as an SDK, with optional ClinePass for flat-rate open-model access. | Bring-your-own-key across Anthropic, OpenAI, DeepSeek, xAI, Mistral, Cerebras or a local model via Ollama, plus a paid ClinePass tier for discounted access to a curated set of open-weight models (Qwen, DeepSeek, Kimi, GLM and others). | — | Yes |
| [Aider](https://theagentsindex.com/aider.md) | Open-source AI pair programming in your terminal, free under Apache 2.0, built to run against 14 LLM providers | Bring-your-own-key and model-agnostic across Anthropic, OpenAI, DeepSeek, local models and effectively any LLM via Ollama — free either way, since you pay the model provider directly. | — | No |
| [Juggler](https://theagentsindex.com/juggler.md) | A free, open-source visual workbench for AI coding agents: each session is an editable Yjs tree, not a transcript. Single Go binary, no Electron, by the creator of JUCE. | Drives Claude, OpenAI, Gemini, Ollama, OpenRouter or DeepSeek models through a swappable JavaScript plugin system — free, open-source and model-agnostic with no usage cap of its own. | — | No |
| [OpenAI Codex CLI](https://theagentsindex.com/codex-cli.md) | OpenAI's open-source (Apache-2.0) terminal coding agent, bundled into ChatGPT plans from Free through Pro — Business seats are grandfathered-only. | Ships built-in support for local/self-hosted models via Ollama and LM Studio alongside Amazon Bedrock and OpenAI's own models — any other provider needs a manual config.toml entry. | — | Yes |
| [OpenCode](https://theagentsindex.com/opencode.md) | A free, open-source (MIT) AI coding agent for the terminal, desktop and IDE, with 75+ model providers, built-in subscription login, and a tested model marketplace behind it. | Bring any of 75+ model providers, including your own local Ollama models, reachable through Models.dev or wired in directly via the /connect command. | — | Yes |
| [Zot](https://theagentsindex.com/zot.md) | A free, MIT-licensed coding-agent harness in one Go binary. Branch any session from any past message, run 30+ model providers from one catalog, and DM the agent from Telegram. | Connects to 30+ model providers — Anthropic, OpenAI/Codex, Gemini, Kimi, DeepSeek, GitHub Copilot, Bedrock, OpenRouter and local Ollama models — through one static Go binary. | — | Yes |
| [Zed](https://theagentsindex.com/zed.md) | The open-source, GPU-native code editor built from scratch by Atom's creators — runs Claude Code, Codex and other agents via the Agent Client Protocol it created. | Connects to ten-plus model providers including Mistral, DeepSeek, Ollama and LM Studio, and ships its own first-party open-weight Zeta2 model for inline edit prediction, included in every plan. | — | — |
| [ElevenLabs Conversational AI](https://theagentsindex.com/elevenlabs-conversational-ai.md) | The voice-quality specialist’s own agent layer, 10,000+ voices and instant cloning, with a bring-your-own-LLM brain. | An OpenAI-compatible custom endpoint opens the door to open-source models like Llama 3.3 or DeepSeek R1 via hosts such as Cloudflare Workers AI, Groq or Together AI, alongside the built-in OpenAI, Anthropic and Google options. | — | Yes |
| [Deepgram Voice Agent API](https://theagentsindex.com/deepgram-voice-agent-api.md) | The speech-infrastructure vendor's own voice-agent API. Managed STT, LLM and TTS over a single WebSocket, $4.50/hr flat, with 6 LLM providers and self-hosted or VPC deployment on the same product. | Its LLM layer spans OpenAI, Anthropic, Google, NVIDIA, Groq and Amazon Bedrock — more than 30 specific models, including open-weight options such as Groq's gpt-oss-20b and NVIDIA's Nemotron-3-Nano alongside closed frontier models. | — | Yes |
| [Cartesia](https://theagentsindex.com/cartesia.md) | The Stanford SSM-research spinout behind Sonic (TTS) and Ink (STT) — Line, its open-source voice-agent SDK, connects to 100+ LLMs and starts at a genuine $0/month, but the agent layer itself isn't self-hostable. | The Line SDK connects to more than 100 LLM providers via LiteLLM, including open-weight models by name, rather than locking a buyer into Cartesia's own reasoning layer. | — | Yes |
| [GPT Researcher](https://theagentsindex.com/gpt-researcher.md) | Open-source autonomous research agent that plans a question, fans out across many sources and writes a cited report. Bring your own LLM and search keys. | Model-agnostic — drive it with OpenAI, Anthropic, Google, Groq or local Ollama models, pairing whichever LLM you choose with a search back-end like Tavily or Bing. | — | Yes |
| [Junie](https://theagentsindex.com/junie.md) | JetBrains' own AI coding agent. Plans before it codes, drives the real IDE debugger, runs across the JetBrains IDE family plus a standalone CLI. Free 30-day Pro trial; Pro from $10/month. | JetBrains' own docs confirm Junie can point at a local runtime via Ollama or LiteLLM alongside its OpenAI/Anthropic/Google frontier-model options — a genuine open-weight path, not just "model-agnostic" marketing language. | — | Yes |
| [OpenClaw](https://theagentsindex.com/openclaw.md) | Open source AI assistant that runs on your machine and manages email, calendar, and tasks via WhatsApp or Telegram | Routes requests through 64 model and media providers including local runtimes — Ollama and LM Studio — alongside Anthropic, Google and OpenAI, plus gateways such as Amazon Bedrock and OpenRouter. | — | Yes |
| [Vecbase](https://theagentsindex.com/vecbase.md) | One workspace where AI agents with roles like Researcher, Coder, Writer, and Operator work as a team | Agents switch between multiple underlying models — Claude, GPT and Gemini beside the open-weight Kimi and DeepSeek — with transparent per-token billing on whichever one you pick. | — | Yes |
| [Perplexity](https://theagentsindex.com/perplexity.md) | The AI answer engine. Cited answers, Deep Research, and the Comet browser that acts on the web for you. | Names z.ai's GLM and Moonshot AI's Kimi, both added in 2026, alongside its own Sonar models and GPT, Claude and Gemini — the open-weight options are selectable, not just routed to behind the scenes. | — | Yes |
| [Genspark](https://theagentsindex.com/genspark.md) | One web workspace for research, files, slides, code, media and agent-run tasks, backed by a persistent context layer. | Its Super Agent blends nine specialized LLMs including DeepSeek — the one entry here where the open-weight model is chosen by the vendor's router rather than by you. | — | Yes |

## How this list is built

A tool earns a place here only if its own Published, sourced listing names at least one specific open-weight model family (Llama, Mistral, DeepSeek, Qwen, GLM, Kimi or similar) or explicit local-model execution (Ollama, LM Studio, "local model") somewhere in its `whatIs`, `whatItDoes`, `keyFeatures`, `integrations` or `attributes.modelLLM` fields: a generic "model-agnostic" or "bring your own model" claim with no open-weight option ever named does not qualify on its own. Verified directly against each listing's own text, not inferred from the `open-models` tag alone in either direction: a tagged listing that names nothing specific is excluded, and an untagged listing whose own text clears the bar is included.