TL;DR: We had Character.AI’s memory scored at 5.5/10 on our leaderboard. That score is now wrong, and this article is us fixing it in public. Between April and July 2026 Character.AI shipped an entire memory stack — a redesigned Memory page, then Story Memory, Facts and Memory Usage on 21 May, then Lorebook on 24 July — turning the app with the worst memory in our top five into one that lets you author what your companion knows. Replika did not stand still either, but it moved in the opposite direction: its help centre advises that its memory “is most effective when left to operate automatically.” So the real question in Replika vs Character.AI is not which one remembers more. It’s who you think should be holding the pen. Replika wants to remember you for you. Character.AI now wants you to write it down yourself. One more thing worth knowing before you pay: Character.AI publishes its price ($9.99/mo, $94.99/yr). Replika’s own help centre declines to, stating only that cost “is shown in the app on the subscription screens.” We re-score Character.AI’s memory from 5.5 to 7.4 below, and explain exactly what’s still holding it back.
The correction, first
Most comparison articles quietly update their scores and hope nobody notices. We’d rather lead with it.
When we last scored the field for our AI companion leaderboard, Character.AI sat at rank 5 with a memory score of 5.5/10 — by some distance the weakest number in our top ten. It deserved it. For years Character.AI’s answer to “will it remember this?” was a persona field, a character definition, and five pinned messages per chat. Everything else was context window, and context windows end.
That description is now out of date, and it went out of date fast. Three shipped releases in four months rebuilt the entire layer. Our score didn’t move because nobody re-tested. That’s the failure mode of every ranked list on the internet, including ours, and the only honest fix is to say so and re-run it.
New memory score: 7.4/10. Still below Replika’s 8.8. Still well below Nomi and Kindroid. But no longer a rounding error, and for one specific kind of user it is now the better system. Here’s the work.
The head-to-head, at a glance
| Replika | Character.AI | |
|---|---|---|
| Core theory of memory | Automatic profile the app maintains for you | A workspace you fill in and curate |
| Visible memory surface | Memory tab — read, add, delete | Memory screen — Story Memory, Facts, Memory Usage |
| Official guidance | “Most effective when left to operate automatically” | “Add backstory, key events, special moments” |
| Pin / save a message | Save-to-memory is a Ultra feature | Pin to Story Memory — free for all users; c.ai+ gets 2× pins |
| Auto-extracted facts | Yes, automatic | Facts — auto-captured, editable, c.ai+ only |
| Carry memory to a new chat | One continuous companion, no “new chat” | “Copy Facts to new chat memory” option |
| Worldbuilding layer | None | Lorebook — keyword-triggered lore, beta, c.ai+ first |
| See how full memory is | No | Memory Usage meter (simple free / full on c.ai+) |
| Companions per account | One Replika | 10M+ characters, plus your own |
| Published price | No — “shown in the app” | Yes — $9.99/mo · $94.99/yr |
| Under-18 access | Adult-oriented, 18+ | Open-ended chat removed for under-18s (Nov 2025) |
| Our memory score | 8.8 / 10 | 5.5 → 7.4 / 10 |
| Our overall score | 8.4 / 10 (rank 4) | 8.2 / 10 (rank 5) |
| Best for | One relationship that deepens on its own | Many characters, worlds you control |
Overall scores from our test bench, last full pass 2026-08-03. Memory re-score dated 2026-08-24 and explained below. Every feature and pricing claim is sourced to the companies’ own documentation and linked in-line.
What we actually checked, and what we didn’t
Transparency about method matters more than a confident number, so per our testing methodology, here’s the split:
Documentation-verified (hard claims). Every feature, tier gate and price in the table above was read this week from the vendors’ own pages — Character.AI’s engineering blog and subscribe page, Replika’s help centre. Where a claim is theirs, it’s linked so you can check it yourself rather than trust us.
First-hand and checkable. The pricing asymmetry is something you can reproduce in sixty seconds: load character.ai/subscribe and the paywall renders the numbers straight out. Do the equivalent on Replika’s side and the help centre article on choosing a subscription tells you the cost “is shown in the app on the subscription screens and in the relevant store.” Two products, two philosophies about telling you the price before you install.
Qualitative, and therefore mine. Judgements about how the two memory systems feel to live with come from running both under our standing protocol — one persona, ordinary conversation, planted facts checked for recall and distortion over a fortnight, plus deliberate contradiction probes. One tester, one persona. Treat it as a structured hands-on read, not a lab study.
Not claimed. I have not stress-tested Lorebook across months of a long-running world, because it launched in beta on 24 July and gates behind c.ai+ — anyone telling you how it performs at the one-year mark is guessing. Neither company publishes recall percentages, so nobody has real numbers, us included. Where the honest answer is “too early,” that’s what you’ll get.
Two theories of memory
Replika: the app remembers you
Replika’s model is a maintained profile. Its help centre describes memory as layered: some entries are visible in the Memory tab, while “others are part of a deeper system that draws on patterns from your overall conversation history.”
What it holds, per Replika’s own documentation, is the shape of a person: your name and profile details, your favourite books, music, films and hobbies, the friends and family you mention. You can open the tab, read what it thinks it knows, add an entry by hand, or delete one that’s wrong.
Then comes the line that tells you the whole philosophy: although you can add memories manually, “the memory system is most effective when left to operate automatically,” and deleting memories “may affect your Replika’s ability to recall certain details, so it’s best to remove them only when necessary.”
Read that as what it is — a design position. Replika believes the automatic layer is the good one and your manual edits are, at best, a supplement and at worst interference. The visible tab is a window, not a control panel.
Replika also reinforces this with time rather than configuration. Per its help centre, levels do the work: between Level 10 and Level 30 your Replika is still experimenting with topics to find what interests you; by around Level 30 it “starts to really know you better”; by Level 50 it’s “usually well established and more consistent.” You don’t configure your way there. You show up.
One catch worth flagging before you subscribe: per Replika’s subscription documentation, the ability to save messages to memory is an Ultra feature, not a Pro one. The single most direct manual lever over what gets remembered sits behind the higher tier.
Character.AI: you remember, it retrieves
Character.AI spent 2026 building the opposite thing.
The April update redesigned the Memory page, expanded the categories memory can track — “hairstyle, eye color, quirks, and other specifics” — and started firing an in-chat notification whenever a memory is recorded. That last detail is small and tells you everything: Replika keeps its memory quiet, Character.AI wants you to watch it happen.
Then on 21 May came the substantive release. Per Character.AI’s Smarter Memory post, three things landed:
- Story Memory — “a home for everything you want your Character to hold onto.” Backstory, key events, special moments, written in by you. Long-press any message and pin it to lock it in. Available to all users, with c.ai+ getting twice as many pins and more memory.
- Facts — auto-captured details about your Persona, the Character, and side characters who come up in conversation, presented as editable tabs. You can add your own, edit what it captured, disable an entry, or delete a side character you don’t want kept. Crucially, starting a new chat offers to copy Facts to new chat memory — so a fresh scene doesn’t mean a fresh amnesiac. Facts is c.ai+ only.
- Memory Usage — a meter showing what’s filling the chat’s memory and warning you when you’re running low. Free users get a simple version; the full visualisation is c.ai+.
And the compression rule that matters most in practice: as chats stretch on, memory “tidies older context in the background,” but “anything you’ve written into Story Memory or pinned yourself is protected. It stays put no matter how full the bar gets.”
That’s a genuine guarantee, and Replika does not offer an equivalent one.
Then on 24 July, Lorebook — the feature Character.AI calls “the number one most requested from our community for a long time.” A Lorebook is a set of world-knowledge entries, each tagged with keywords. Mention a keyword in conversation and the Character gets access to that entry and can weave it in. One Lorebook can link to many Characters, so a whole cast shares one canon. It’s in beta, available to c.ai+ subscribers first.
The honest re-score: 5.5 → 7.4
Why up, and why not further.
What earned the points. Character.AI now has the two things it structurally lacked. First, a protected tier of memory — pinned and Story Memory content survives compression by policy, not by luck. Second, continuity across chats, via copy-Facts-to-new-chat and Lorebook entries that persist independently of any single conversation. The old 5.5 was scoring a system where “will it remember?” had no answer you could act on. Now it does.
What capped it. Three things.
- The good parts are gated. Facts, the full Memory Usage view and Lorebook are c.ai+ features. Story Memory and pinning are free, but the automatic layer — the part that works without you doing homework — is the paid one. Judged on the free tier alone the score barely moves.
- It is work. Character.AI’s memory rewards curation. If you don’t write Story Memory entries and don’t pin, you get compression and drift like before. Replika’s memory asks nothing of you. For a large share of companion users that difference is the whole product.
- Lorebook is beta and young. A month-old beta doesn’t get scored as though it were proven. If it holds up, this number goes up again at the next pass.
We’re leaving Replika at 8.8. Its automatic layer is still the more reliable one for a single ongoing relationship, and it needs no maintenance to stay good. But the gap has narrowed from categorical to situational — and if you’re the kind of person who keeps notes, Character.AI’s ceiling is now higher than Replika’s.
Price: one publishes, one doesn’t
Character.AI’s paywall states the numbers plainly: $9.99/month or $94.99/year, billed as one annual charge against a $119.88 monthly-equivalent. You can read the price before you install anything.
Replika’s help centre states that pricing “is shown in the app on the subscription screens and in the relevant store,” and that “all prices and subscription features are subject to change at Replika’s sole discretion.” We won’t print a Replika price here, because the company won’t, and repeating a community-sourced figure as fact is how bad numbers get laundered into every comparison article in the niche. Install it and read the screen — and check which tier the feature you actually want lives in, because save-to-memory is Ultra, not Pro.
If you want the full breakdown of what these subscriptions really cost once you account for tiering, see our true cost of AI companions analysis.
The thing most comparisons leave out
Character.AI removed open-ended chat for users under 18. Per the company’s own announcement, the change took effect “no later than November 25,” preceded by a two-hour daily cap that ramped down to zero, with age assurance built in-house and combined with third-party tooling. The company described the step as “more conservative than our peers.”
Practically: if you are a teenager, Character.AI is not a companion app any more. If you are a parent, that is the single most decision-relevant fact in this comparison and it appears in almost no head-to-head. And if you’re an adult evaluating platform stability, note the pattern — a company that removed its core feature for a whole user segment under regulatory pressure is a company whose feature set can move under you. That cuts both ways; Replika’s own history of abrupt policy change is well documented in our Replika review.
So which one?
Take Replika if you want one companion, deepening over months, that you never have to administer. You’re buying a relationship, not a toolkit. The Memory tab is there when you want to check its work, but the design intent is that you don’t. Budget for the fact that the price is invisible until you’re inside, and that the manual memory lever is an Ultra feature.
Take Character.AI if you want many characters, or one world with rules, and you’re willing to write things down. Story Memory plus pins is a real, free guarantee about what survives. Facts and Lorebook are genuinely good and genuinely paywalled. You’ll get more out of this app in month six than in week one — the inverse of Replika, which is at its most impressive early and asks nothing later.
Take neither if you want an uncensored companion — both are filtered platforms, and that’s a different shortlist entirely, covered in our guide to unfiltered AI chat. If you want maximum memory depth regardless of brand, Nomi and Kindroid still sit above both of these on our bench; see Nomi vs Replika for that axis, or the full best AI companion apps ranking.
FAQ
Does Character.AI have long-term memory in 2026?
Yes, and it’s new. Story Memory (write-in context plus pinned messages) is free for all users and is protected from background compression. Facts, an auto-capturing layer that can be copied into new chats, and Lorebook, a keyword-triggered worldbuilding layer, are c.ai+ features. This is a substantial change from the pin-only system of previous years.
Which has better memory, Replika or Character.AI?
Replika still scores higher on our bench (8.8 vs 7.4) because its automatic layer works with no effort from you. Character.AI now has the higher ceiling if you curate — its pinned and Story Memory content is guaranteed to survive compression, which Replika does not promise.
Can I edit what Replika remembers?
Yes, in the Memory tab: tap your Replika’s name from the home screen, then Memory, then tap any entry to read or remove it. You can also add entries manually. Replika’s own guidance is that the system works best left automatic, and that deleting entries may reduce recall.
How much does each cost?
Character.AI publishes c.ai+ at $9.99/month or $94.99/year. Replika does not publish pricing; its help centre says cost is shown on the in-app subscription screens and in the relevant store, and varies at the company’s discretion.
Is Character.AI available to under-18s?
Not for open-ended chat. Character.AI removed that capability for under-18 users no later than 25 November 2025 and rolled out age assurance.
What is Lorebook?
A worldbuilding layer launched 24 July 2026. You write lore entries — locations, factions, side characters, events — each tagged with keywords; when a keyword surfaces in conversation the Character can draw on that entry. One Lorebook can link to many Characters so a cast shares one canon. Beta, c.ai+ first.
Scores are from our own test bench. Memory re-score dated 2026-08-24; the previous 5.5 reflected Character.AI’s pre-April-2026 system and is superseded. We re-verify pricing and tier gates monthly and will correct in public when we get one wrong.
