Summary
Legal AI platform Harvey added GPT-5.6 Sol, OpenAI's newest top-tier model, to its agentic platform, reporting stronger BigLaw Bench performance and perfect scores on risk assessment, compliance, and deal-management tasks. Harvey also shipped web-app localization, with French (Canada and France) at general availability.
What changed
As of July 10, 2026 Harvey made GPT-5.6 Sol available to US customers across its legal agents, reporting improved BigLaw Bench results and top scores on risk, compliance, and deal management, alongside new language localization starting with French Canada and French France at GA.
Why it matters
Harvey wiring the just-released GPT-5.6 Sol into production legal agents within days shows how quickly vertical agent platforms now absorb frontier models to compete on domain benchmark quality. Localization plus higher benchmark scores signal a push to defend its lead in regulated, high-stakes professional workflows.
Evidence excerpt
Harvey added GPT-5.6 Sol, OpenAI's latest GPT-5 model, bringing stronger BigLaw Bench results and perfect scores in risk assessment, compliance, and deal management, with US customers able to use it this week as of July 10, 2026.