Best Open-Source Research & Reasoning AI Agents (2026)
As of June 2026, the top open-source research & reasoning AI agent is scientific-agent-skills by K-Dense-AI, with an overall score of 85.1 / 100. 4 research & reasoning agents are tracked in this category on The Agentic Leaderboard.
| Rank | Agent | Score |
|---|---|---|
| #21 | scientific-agent-skills by K-Dense-AI | 85.1 |
| #53 | last30days-skill by mvanhorn | 83.9 |
| #72 | gpt-researcher by assafelovic | 83.3 |
| #95 | Auto-claude-code-research-in-sleep by wanshuiyin | 82.8 |