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CurrentReleased Aug 5, 2026ProprietaryReasoningHark Handoff research preview

Hark Handoff

Decision reading
Hark Handoff is tracked, but not publicly ranked yet. The profile exposes 0 sourced benchmark rows and leaves unsupported fields blank until a published record exists.

Released Aug 5, 2026 — see all recent releases

Data as of September 18, 2026 · How the score is built

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Spec sheet

Each documented value carries its source. Missing fields stay visible as not sourced or not published, rather than disappearing from the page.

API model ID
Not published
Context window
Not published
Maximum output
Not sourced yet
Knowledge cutoff
Not sourced yet
Input modalities
Not sourced yet
Output modalities
Not sourced yet
Parameters
Not disclosed by the provider
Availability
Hark introduced Handoff as a research preview on August 5, 2026. Access is currently application-based through Hark's beta sign-up; Hark says its broader platform will be available by the end of summer.
Cloud regions
Not tracked yet
Lifecycle
Current
API capabilities
Tool calling, structured outputs, and batch support are not tracked yet
Prompt caching
Not documented in the pricing record
Self-host
Weights are not published
Rate limits
Not tracked yet

Lineage

The sequence follows explicit supersedes links. A successor's displayed score stays at least 0.1 points above its predecessor; raw benchmark rows do not move. Scores and prices remain blank when the corresponding public row or first-party rate is unavailable.

  1. Aug 5, 2026 · you are here

    Hark Handoff

    Not publicly ranked · Price not listed

research-preview · Research Preview

How to read this profile

The visual layer above carries the decisions. These notes preserve the model, ranking, coverage, and family context behind the numbers.

We track Hark Handoff, but no weighted text-model benchmark result is published on the site yet. This page shows the metadata and separate protocol evidence we can verify now; a BenchLM score will appear only if compatible public evaluations land.

Hark Handoff is a proprietary model. It uses an explicit reasoning mode, which can improve complex problem solving while adding latency and token use.

Hark introduced Handoff as a research preview on August 5, 2026. Access is currently application-based through Hark's beta sign-up; Hark says its broader platform will be available by the end of summer.

Official launch snapshot from Hark's August 5, 2026 Handoff announcement. Hark describes Handoff as a long-horizon computer-use agent that runs in a dedicated virtual computer with a browser, file system, and terminal. Its launch compares the system on Online-Mind2Web, WebTailBench, and internal browser-use evaluations, but the published Online-Mind2Web chart is not exposed as machine-readable values and the WebTailBench/internal results use Hark's own harness. BenchLM therefore records the release without copying non-reconciled values into comparable benchmark fields.

The profile has no source-displayable benchmark row yet.

Radar

Hark Handoff release history

Full release history

Radar confirmed these at the source. Use Hark Handoff in your work? Explore Radar to follow supported changes and choose your alerts.

Questions

How does Hark Handoff perform overall in AI benchmarks?

Hark Handoff does not have any source-displayable benchmark rows yet, so this profile does not assign a public score or rank. Documented specifications remain visible, while score-led charts and claims stay unavailable until a published evaluation can be attached to the exact model.

Does Hark Handoff have full benchmark coverage on BenchLM?

No. Hark Handoff currently has 0 source-displayable rows across 446 tracked benchmark slots. The profile exposes published, non-generated evidence and leaves missing categories blank until an exact evaluation is available. Coverage describes how much was measured; it is not a penalty added to an individual benchmark result.

What is the context window size of Hark Handoff?

Hark Handoff's context window is not documented in a source tied to this exact model yet. The profile leaves the value unavailable instead of borrowing a limit from an earlier family member or an unverified route. Maximum output length remains a separate field.

Compare Hark Handoff with every tracked model490 comparisons

Last updated September 18, 2026. Runtime fields remain blank until a sourced snapshot exists.

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