Skip to content
The Agents Index
Sign inSubmit an agent

Collection

Model-Agnostic AI Agent Tools (2026)

We track 20 model-agnostic AI agent tools. Our October AI answer check covered 20 of them.

Updated 1 November 2026

18 with a free plan · prices checked 2 September–1 November 2026

Reviewed by The Agents Index editorial team.

On this page
  1. At a glance
  2. The 20 agents
  3. Browse the full categories
  4. Sources and method
  5. Where next
See the 20 agents ↓

AI agent tools whose own product documentation supports multiple model providers or a bring-your-own-key layer, so the underlying LLM can be swapped without rebuilding the agent.

A model-agnostic AI agent is one whose own listing names multiple model providers or an explicit bring-your-own-key (BYOK) layer, rather than baking in a single vendor's models.

At a glance

agents
20
Free to start
18 of 20
free plan or freemium
Public API
18 of 20
2 more only on a paid tier
Public pricing
19 of 20
price on their own site
What this collection covers

The set below is the buyers' shortlist when the question is "what runs everywhere": agents whose own product documentation names Claude, GPT, Gemini and at least one open-weight family, and where swapping the underlying model is a configuration change rather than a rewrite.

Per-entry notes name which providers each agent explicitly supports, so the gap between "model-agnostic in name" and "model-agnostic in the listing's own text" is visible at a glance.

What it takes to be on this list

A tool earns a place here only when its own Published, sourced listing sets `attributes.modelAgnostic` to Yes, meaning the tool's own documentation names multiple model providers (Anthropic, OpenAI, Google, Mistral, Meta, DeepSeek and so on) or exposes an explicit bring-your-own-key layer where any compatible API endpoint can be plugged in. A single named provider with a roadmap promise of more does not qualify. Neither does a vendor's general "we work with all models" marketing claim that does not surface in the listing's own fields. Membership is derived from each listing's already-researched, quality-gated `attributes` and `integrations` data, not from inference about a tool's flexibility. Where a tool's claim to multi-provider support lives only in a third-party blog post or a community report, that is not enough; the listing must surface it in a field the listings lane has already verified.

The 20 agents

Browse the full categories

All Agent frameworks All Agent builders All Agent platforms All Coding agents All Terminal coding agents All Conversational agent builders All Agent memory All AI workflow automation All Cloud coding agents All Voice agents Every collection

Sources and method

Every price here was read on the maker's own pricing page.

All 20 sources