Ax vs Rig
Ax and Rig are both agent frameworks. Ax is published by Ax and Rig by Playgrounds. On GitHub, Rig has 8,963 stars and Ax has 2,969. Both were last active in Oct 2026. The table lines up where they differ (publisher, license, weekly downloads and languages) and has the install commands for both. Everything here comes from the listings' public sources and is refreshed daily. Ax describes itself as: DSPy-style toolkit for typed LLM signatures, agents and flows, TypeScript-first with Python, Java, C++, Go and Rust libraries. Rig: Rust library for LLM applications with agents, tool calling, streaming and 20+ model providers, plus a terminal coding agent. Licenses: Ax Apache-2.0, Rig MIT.
Updated Oct 26, 2026 · Built from catalog data; how we rank and grade
Ax
Ax
DSPy-style toolkit for typed LLM signatures, agents and flows, TypeScript-first with Python, Java, C++, Go and Rust libraries.
Rig
Playgrounds
Rust library for LLM applications with agents, tool calling, streaming and 20+ model providers, plus a terminal coding agent.
Who should pick which
- Pick Ax if you work in TypeScript and Python.
- Pick Ax if you need several agents working together.
- Pick Ax if you want a stable release (Rig is marked beta).
- Rig has the larger community: 8,963 GitHub stars against 2,969.
From listing data only. We don't pick a winner on security beyond the grades; read how grades work.
Side by side
| Fact | Ax | Rig |
|---|---|---|
| Type | Harness | Harness |
| Publisher | Ax | Playgrounds |
| License | Apache-2.0 | MIT |
| Pricing | Not stated | Not stated |
| Runs | Not stated | Not stated |
| Auth | Not stated | Not stated |
| Hosts supported | Not stated | Not stated |
| Tools | Not listed yet | Not listed yet |
| Security grade | –Security: not graded yet | –Security: not graded yet |
| Freshness grade | AFreshness: A | AFreshness: A |
| GitHub stars | 2,969 | 8,963 |
| Weekly downloads | 27,168 | 152,367 |
| Last release | Oct 21, 2026 | Oct 19, 2026 |
| Last activity | Oct 21, 2026 | Oct 24, 2026 |
Facts from each listing's public sources, checked daily. Tool lists arrive with tool scans.
Install
Ax
npm install @ax-llm/ax
Rig
cargo add rig-core
Also consider
- 0.777score
ADK for TypeScript
Google
TypeScript toolkit for agents with Zod-typed tools, graph and multi-agent workflows, and Node.js or browser runtimes.
HarnessAFreshness: A★ 1.4K↓ 143.5K/wk - 0.748score
LangGraph
LangChain
Low-level Python orchestration framework for long-running stateful agents, with durable execution, human review points and short- and long-term memory.
HarnessAFreshness: A★ 43.8K↓ 13.1M/wk - 0.737score
Mastra
Mastra
TypeScript framework for AI agents and apps with graph-based workflows, memory, suspend-and-resume approvals, MCP servers and model routing.
HarnessAFreshness: A★ 29.1K↓ 1.4M/wk
Questions
- Is Ax or Rig more popular?
- Rig has more GitHub stars (8,963 against 2,969). Stars measure attention, not quality, so check freshness and docs too.
- Are Ax and Rig open source?
- Yes: Ax is Apache-2.0 and Rig is MIT.
Related
Cite this page
Ax vs Rig. Agent Mart. https://agentmart.dev/compare/ax-vs-rig (last updated 2026-10-26)