BackSearch Released to Prevent Future Data Leakage in Agent Backtesting

The GenReasoning team introduced BackSearch, a web search tool for LLM agents that prevents future information leakage during backtesting. By allowing users to set an 'asof' date, it ensures models only access web data available before that specific time.

2026-07-24 ~ 2026-07-24 · 4 related posts

• BackSearch lets agents query the web as-of a past date to avoid future leakage — brianrkelly · 2026-07-24
• Introducing BackSearch: A Time-Travel Web Search Tool for LLM Backtesting — rosstaylor90 · 2026-07-24
• BackSearch’s development was led by @ranko3000 with feedback from several collaborators — rosstaylor90 · 2026-07-24
• BackSearch adds an as_of date to web tools so agents can be backtested without future leakage — HanchungLee · 2026-07-24