Best Open-Source Research & Reasoning AI Agents (2026)
As of October 2026, the top open-source research & reasoning AI agent is scientific-agent-skills by K-Dense-AI, with an overall score of 87.3 / 100. 4 research & reasoning agents are tracked in this category on The Agentic Leaderboard.
| Rank | Agent | Score |
|---|---|---|
| #2 | scientific-agent-skills by K-Dense-AI | 87.3 |
| #8 | last30days-skill by mvanhorn | 86.6 |
| #62 | gpt-researcher by assafelovic | 84.5 |
| #83 | cs249r_book by harvard-edge | 83.9 |