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research AI tools

2 tracked research tools — 1 still running, 0 confirmed dead, 0 on life support and 1 absorbed into something else.

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2
Tracked
1
Active
0
Possibly dead
0
Shut down
1
Acquired

Still alive (1)

Harvey AI

🟢Active

Harvey launched in 2022 with a GPT-4-based product for case research, drafting, and document review tailored to elite law firms. Allen & Overy and PwC became flagship customers. By mid-2025 Harvey had raised over $500M across Sequoia, Kleiner, GV, and OpenAI's Startup Fund at a $5B+ valuation and counted most of the AmLaw 100 as customers. The product, team, and roadmap continue to grow.

research

Dead, dying or absorbed (1)

Casetext

🟡Acquired / Merged

Casetext launched CoCounsel in March 2023, a GPT-4-powered legal assistant for case analysis, contract review, and deposition prep. The product gained traction with AmLaw 100 firms and Thomson Reuters announced a $650M cash acquisition in June 2023, closing in August. CoCounsel was rebranded as a Thomson Reuters product line and integrated with Westlaw. The standalone Casetext site is gone.

research

Quick pricing overview

Pricing as last recorded. Always check the vendor page before buying.

ToolStatusPricing modelStarts at
Casetext🟡Acquired / Merged——
Harvey AI🟢Active——