Episodic memory · for Claude Code

Your AI forgets.
Hydrate remembers.

Claude Code starts each session with a blank mind. Hydrate captures what was built, decided, and named — then quietly injects it into the next session. No prompt engineering. No screenshots of previous chats. Just context that works.

$ curl -fsSL gethydrate.dev/install | sh
macOS · Linux · Windows
Get started — free Read the benchmarks
Works with Claude Code · data stays on your machine · no account required for Free
2 → 7
sessions shipping
Haiku, multi-session scenario
−57%
cost reduction
Opus, simple scenario
45%
of Sonnet cost
hybrid mode, Sonnet-tier quality
$0
forever
Free tier, local only

From the 2026-04-17 benchmark run. $67 of real API spend. Every number is reproducible.

What changes

The difference is execution, not intelligence.

Models don't get smarter with Hydrate. They get context. That's usually enough.

without Hydrate 
$ claude "add a dark mode toggle"

Haiku: What should the default
 colour scheme be?
Haiku: What do you mean by
 "toggle" — a button? switch?
Haiku: Which pages should be
 affected?

[ nothing written ]
with Hydrate 
$ claude "add a dark mode toggle"

Haiku: edits src/styles/globals.css
Haiku: edits src/components/Nav.tsx
Haiku: Done. Toggle wired to
 prefers-color-scheme. Persists in
 localStorage. Icon updates on
 change.
One intervention · four outcomes

It pays off differently for every model.

Hydrate isn't a uniform speed-up. Each model has a different failure mode without context. Hydrate removes all four — at different costs, with different value propositions.

Haiku 4.5 reliability
before
2/7 sessions ship. Asks clarifying questions instead of building.
with Hydrate
7/7 sessions ship. Executes every prompt.
Sonnet 4.6 −14% cost
before
Builds cleanly, 7/7 sessions.
with Hydrate
Builds cleanly, modest efficiency gain.
Opus 4.7 (simple) −57% cost
before
Re-explores workspace every session.
with Hydrate
Skips re-exploration, produces same output.
Opus 4.7 (complex) 2× features
before
3/7 sessions refuse with "need clarification".
with Hydrate
6/7 sessions build, converting refusals into features.
Hybrid — Sonnet s1 → Haiku s2+ ★ flagship
before
n/a — this is a workflow, not a model.
with Hydrate
Sonnet-tier design propagates to Haiku via memory. $1.41 total.
See the full benchmarks
How it works

Three quiet pieces.

01

Hooks

Hydrate installs two Claude Code hooks — UserPromptSubmit and Stop. They're invisible to you. They capture each session's prompt, decisions, and output.

02

Facts

Between sessions, an extractor pulls concrete facts — "pricing tiers are Free/Pro/Team", "accent colour is #89b4fa" — and stores them scoped to your project.

03

Dashboard

A local dashboard at localhost:8089/dashboard shows your spend, cache ratio, and facts per project. Nothing ever leaves your machine unless you enable Pro sync.

Pricing

Start free. Pay only when you need the rest.

Free

$0/ forever

Full Claude Code memory locally. Data on your machine. No account.

Install
Most popular

Pro

$9/ month

Encrypted cloud backup. Restore on a new laptop in one command.

Go Pro

Team

$29/ user / month

Shared project memory across your team. Hybrid mode shines here.

See Team

Enterprise with SSO, self-host, org-scoped facts — contact sales.

Ready when you are

Install in 30 seconds.

No account. No telemetry. The Free tier never touches the network.

$ curl -fsSL gethydrate.dev/install | sh