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NousResearch/hermes-agent

Fix compression threshold ceiling for large-context models

Cluster 83450 · agent. Data as of

Nothing open on GitHub. Fix merged in #115986 on 19 Sep 2026. Check it covers your case.

The short answer

0open issues
0open PRs
3items grouped
Known?
Yes. 3 related items grouped here, 1 issue already closed.
Fix event
A fix was merged to main in PR #115986. Check it covers your case. No release data is tracked.
Tracker
The maintainers' tracker marks this resolved, deciding PR #115986. That is separate from the fix event.
Still open
Nothing open on GitHub.

These items address a bug where compression thresholds had no upper ceiling, causing large-context models (e.g. 1M-token windows) to defer compaction until 500K tokens, with proposed fixes capping the default at 256K. The cost and billing implications of delayed compaction are also noted.

Open issues0

No open issues.

Open PRs0

No open pull requests.

Fixes on record

Merged to main. A stamp counts the issues a fix is linked to.

  • #115986 fix(compression): large-context models compact at 256K by default instead of half the window (#83450, salvage #83523)

    merged to main

    files: agent/agent_init.py, agent/context_compressor.py, cli-config.yaml.example, hermes_cli/config_defaults.py, hermes_cli/context_switch_guard.py, tests/agent/test_context_compressor.py, tests/hermes_cli/test_context_switch_guard.py, tools/delegate_tool.py, website/docs/developer-guide/context-compression-and-caching.md, website/docs/user-guide/configuration.md, website/docs/user-guide/features/delegation.md

1 PR closed without merging

From the close comments: merged via another change 1

  • #83523 fix(compression): stop 1M-context sessions from deferring compaction to 500K · merged via another change → #115986
Closed issues · 1
  • Closed#83450[Bug]: `compression.threshold` has a token floor but no ceiling: on 1M-context models compaction first fires at 500K and long sessions bill quadratically
How this cluster was grouped
  • Link evidence (structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
  • Pairwise link density 0.67: the share of item pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. 1.00 means every pair is linked.

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At a glance

Subsystem
agent
Merged PRs
#115986
Closed issues
1
Attempts
1 PR closed without merging
Fix link checked
19 Sep 2026

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