Changelog

What's new in the stack.

Recent releases from HybridDB and CoreMem — including the results we'd rather publish than hide.

CoreMem
v0.16.1 Sep 2026

Timestamp filters compare chronologically.

  • ts_after/ts_before now compare chronologically across mixed naive/aware formats — a naive 23:00 message is no longer excluded by an earlier UTC filter (the documented known limitation since 0.13.2).
  • Boundary semantics unchanged; unparseable values fall back to the legacy lexical comparison.
CoreMem
v0.16.0 Sep 2026

Filtered recall can no longer starve.

  • Equality filters (role, session, user, agent) push into the Chroma scan before the vector search — adopting HybridDB 0.7.0's search(where=).
  • Demonstrated: with 150 same-phrase noise rows, the old over-fetch path returned empty for a session-filtered recall; pushdown returns the target as the top hit.
CoreMem
v0.15.0 / v0.14.0 Sep 2026

Versioned memory — opt-in, then default.

  • Git-like versioned tables (HybridDB 0.6.0): recall against memory as of any point in time.
  • Versioned=True became the default in 0.15.0; HybridDB 0.7.0 is the floor.
HybridDB
v0.7.0 Sep 2026

Metadata pre-filtering, lazy analytics.

  • search(where={...}) pushes scalar-column filters into Chroma before the vector scan — multi-tenant scoping with equality and $gte-style operators, in all modes.
  • DuckDB mirrors are created on first OLAP query instead of at open — tables you never query with olap cost nothing to maintain.
  • Long-document chunking helper: deterministic paragraph/sentence splitter with optional overlap, plus the chunks-as-rows ingestion pattern.
HybridDB
v0.6.0 Sep 2026

Versioned, git-like tables.

  • Versioned tables bring time-travel reads and restores; update-heavy rollbacks are up to 41× faster via batched restores (measured in CoreMem's 0.14.0 perf gate).
ModelPanel
Gateway M2 Sep 2026

Streaming, Anthropic, notices, fusion sidecar.

  • All three dialects stream: chat-completions with fallback-before-first-token, Responses typed events, and Anthropic Messages — E2E-verified against Claude Code.
  • modelpanel/fusion sidecar: task-routed panel recipes with streaming judge synthesis (Python stdlib, OpenAI-compatible on the wire).
  • Opportunity notices: when the served model also lives somewhere healthier, one header + body field says so — never an auto-switch.
  • Adapters: Groq, NIM, Cerebras, OpenRouter, Mistral, Gemini, LLM7; store:false respected end to end.
ModelPanel
Gateway M1 Aug 2026

The core gateway, shipped.

  • Canonical request model, Responses + chat-completions ingress, OpenAI-compatible egress, tier-aware router with rate budgets, registry hot-reload.
  • Key vault with tier flags (free-permanent, free-credits, discounted, paid); CLI: serve, add-key, models, status.
  • Evidence loop: benchmark runs feed panel selection — panel synthesize 95.0% vs 90.0% best single on matched GSM1K.
AgentProfile
v0.2.1 Sep 2026

PyPI packaging polished.

  • PyPI metadata, README, and AGENTS.md; STRATEGY.md facts refreshed.
CoreMem
v0.13.2 Aug 2026

Filter plumbing, fixed end to end.

  • Every recall filter is now honored by every strategy — preference queries, session_cap selection, and fusion no longer leak messages from other sessions.
  • ingest() returns the turn_id actually stored; MCP ingest surfaces invalid metadata JSON instead of dropping it silently.
  • Use-after-close now raises; recall() rejects empty queries instead of returning arbitrary rows.
  • 12 regression tests from a full E2E bug hunt — suite at 175 passing.
CoreMem
v0.13.1 Aug 2026

Memory hygiene, lifecycle, wider MCP surface.

  • New API: list_sessions(), delete_messages(), stats(), close() with context manager — pooled handles no longer wedge the vector store.
  • MCP server widened from 5 to 8 tools — delete, fetch_session, stats; recall accepts role, ts_after, ts_before, session_cap.
  • CLI gains stats and delete subcommands; recall output now includes message ids.
CoreMem
v0.13.0 Aug 2026

Defaults validated by answer evals.

  • Bundle budget dropped to 4k chars with evidence-first ordering — 0.678 answer accuracy vs 0.608 at 16k, with ~60% less context.
  • Preference union and temporal query decomposition folded into the default episodic path (+0.033 / +0.037 session recall on S).
  • ingest_many() — batch ingestion 4.3× faster (550 messages: 49.9s → 11.5s) with identical retrieval.
  • session_cap opt-in: +0.124 message recall@5 at the cost of session recall — documented tradeoff.
HybridDB
v0.5.6 Aug 20, 2026

The reliability release.

  • FTS5 indexes backfill after every rebuild — keyword search no longer silently returns zero results after reindex, drop_column, rename_column, or import_sql.
  • Journal processing is chronological with last-op-wins — fixes a permanent journal wedge on delete-then-reinsert.
  • DuckDB analytics supports custom-PK tables; stale broken mirrors are detected and rebuilt automatically at init.
  • read_query is enforced read-only at the SQLite level — the WITH-clause write bypass is closed.
  • GraphAPI exposes search_graph_ppr and sync_graph_nodes; graph sync rules are validated at registration.
  • insert/update honor explicit primary keys; drop_column refuses to drop the primary key.
CoreMem
v0.12.0 Aug 2026

MCP server, CLI, hooks.

  • coremem mcp — stdio server; hook handlers for Claude Code and Codex; integration configs for Claude Code, Codex, and OpenCode.
  • CLI: recall, ingest, compile, rebuild, sessions, hook, mcp.
  • Zero-LLM recall stays the default — 99.9% session recall@5 on LongMemEval Oracle.
HybridDB
v0.5.5 Aug 16, 2026

Graph fixes.

  • Synced graph node IDs are namespaced by table — two tables with the same keys no longer overwrite each other.
  • Personalized PageRank runs on the undirected subgraph — graph-aware retrieval actually works.
  • Edge rules work with custom primary key names; ghost nodes are removed on re-sync.
HybridDB
v0.5.4 Aug 15, 2026

search_graph fix.

  • search_graph and search_graph_ppr returned [] for default integer-PK tables — the rowid alias collision is fixed.
HybridDB
v0.5.3 Jul 31, 2026

PPR graph retrieval.

  • search_graph_ppr(k_seeds) — separate control over seed count vs. final results.
  • sync_graph_nodes() — public API for syncing table rows into graph nodes.

Full changelogs live in the repos.

Every release is documented in detail, including the bugs that took the longest to find.

HybridDB changelog CoreMem changelog