Holo4 brings screens, code and APIs into one agent workflow
H Company released Holo4 models designed to combine graphical interfaces, code, MCP and APIs within a task. The announcement links downloadable weights, API access and public benchmark trajectories that show the steps behind reported scores. Its comparisons use different tasks and harnesses, and the results are vendor-reported rather than guarantees for a team's workflow. Optimized drafter checkpoints are promised later, not part of today's confirmed release.
Context & source check
Test an agent on one bounded workflow with realistic permissions. Review its actions, recovery from mistakes and completed output, rather than choosing solely by a benchmark score.
Model release and vendor benchmarks. Builder / platform source. Source checked Sep 28, 2026. Not independently tested.

