Hark launches Handoff²: Benchmarks surpass Opus 5.5 High, up to 3.8x faster at booking flights

Beating AI News Flash: Hark, the personal AI assistant of Figure AI founder Brett Adcock, has launched its next-generation web operation model Handoff², now available to all Hark Pro users. Compared with the previous generation, the new version completes web tasks at an average speed twice as fast overall, with flight booking accelerated by up to 3.8 times and long-duration research tasks faster by more than 5 times.

Hark tested the new model across 478 tasks covering 238 websites, with the task completion rate rising from 73% to 82%, an increase of 9 percentage points. Its ability to handle website CAPTCHAs also improved by 80%.

According to Hark's own testing, Handoff² surpasses Claude Opus 5.5 High in both web operation performance and speed. Compared with the higher reasoning tier Opus 5.5 Max, the accuracy gap is less than 5 points, but it completes tasks at roughly twice the speed.

Hark mainly achieved the speedup by improving reinforcement learning training. During training, excessive reasoning, repetitive operations, and time-consuming steps are penalized, teaching the AI to execute multiple operations at once. For example, it can fill in multiple form fields consecutively, or combine recurring operations for direct reuse later. After training, the new model's per-task time dropped by 46%, and combined with backend optimizations, overall speed increased to an average of twice that of the previous generation.

Hark also disclosed that since its official launch in October this year, Handoff has cumulatively run more than 5.6 million browser sessions and processed over $20 million in shopping transactions.