The honest answer before testing

There is not yet enough retained HarnessBase evidence to declare DSH or OpenCode the better choice. The publishable answer will identify which product fits which task and constraint, with current versions and failures visible.

Verify both products before comparing

Confirm the canonical publisher, repository, package, documentation, version, license, and release date for DeepSeek Harness and OpenCode. The test must isolate model/provider behavior from context construction, tools, retries, cache state, and UI mode.

Shared test protocol

Lock one repository commit and task prompt. Use the same model/provider when both products permit it. Align the permission boundary, network access, cache state, and success criterion. Run enough repetitions to expose unstable behavior.

  • Install/setup steps and time.
  • Model/provider and credential route.
  • Context and tool configuration.
  • Permission and approval behavior.
  • Time, tokens if exposed, tool calls, retries, changed files, tests, and failures.

The page will answer scenarios, not crown a universal winner

The final page will separate first-use setup, provider flexibility, extensibility, UI, automation, permissions, performance, and recovery. A developer choosing OpenCode for one workflow may reasonably choose DSH for another.

Publication gate

Research current official sources, complete the same-task runs, retain raw observations, write the scenario selector, and disclose every uncontrolled variable. Only then remove noindex and add the URL to the sitemap.

Sources and evidence boundary

Primary sources establish product facts. HarnessBase labels direct testing separately and does not convert community observations into verified results.

Target query cluster: DeepSeek Harness vs OpenCode · DSH vs OpenCode