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Hindsight

hindsight.vectorize.io · listed 14 Oct 2026

Open-source memory layer so AI agents can learn from past experience, with Memlake object-storage backend.

Developer toolsResearchOpen sourceAPI · CLI · WebPublic APIOpen source
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PREVIEWfrom hindsight.vectorize.io · 14 Oct 2026
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Verified 14 Oct 2026
✓ Online · checked 14 Oct 2026✓ Reviewed by an editorHow we check
Overview

What is Hindsight?

Hindsight is an open-source long-term memory system for AI agents from Vectorize. It extracts typed facts (world, experience, observations, mental models, knowledge pages), then recalls with four parallel strategies (semantic, keyword, graph, temporal) and can reflect with an agentic loop. Deploy embedded locally, on your Postgres/pgvector, or on Hindsight Cloud; Memlake is their Rust object-storage memory engine for large scale. Integrates with 20+ coding-agent harnesses plus MCP/HTTP/SDKs. Self-host free; Cloud free credits are mentioned on Product Hunt — exact Cloud plan dollars were not fully listed on the overview page fetched 2026-10-14.

Good for
  • Agent builders who need memory beyond naive vector RAG
  • Teams wanting retain/recall/reflect APIs with temporal and graph retrieval
  • People self-hosting agent memory on Postgres or object storage
Watch out for
  • Cloud plan prices were not fully detailed on the overview page fetched 2026-10-14
  • Benchmark numbers are vendor-published; compare against your workload
  • Observation consolidation runs as a background worker — fresh facts may be stale until consolidated
Features

What it does

  1. 01retain / recall / reflectThree core APIs: store transcripts as typed facts, multi-strategy recall, agentic reflect with citations.
  2. 02Four-way retrievalSemantic, BM25 keyword, entity graph, and temporal search fused by rank then cross-encoder rerank.
  3. 03Observation consolidationBackground worker merges facts into evidence-grounded beliefs with history.
  4. 04Wide integrations20+ coding harnesses, MCP, HTTP, SDKs; Hermes/OpenClaw memory provider.
Pricing

Hindsight pricing

From the product site · 14 Oct 2026
Self-host / embedded$0/ onceOpen source local or bring-your-own Postgres
Hindsight CloudQuoteManaged; free credits on PH — full plan dollars not verified on overview
Crawler record

Change log

What our crawler noticed on hindsight.vectorize.io since listing.

  1. 14 Oct 2026+Listed after editor review
FAQ

Questions about Hindsight

Is Hindsight open source?

Yes. You can run embedded or on your own Postgres cluster. Source: https://hindsight.vectorize.io

What is Memlake?

A Rust storage engine for agent memory in object storage, launched with Hindsight 1.0 on Product Hunt (2026-10-14). Source: https://www.hunted.space/dashboard/vectorize

See also

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