The core problem: on credit-metered platforms, you don't know what things cost
On a flat-subscription platform, the deal is simple: pay $X per month, get the features described. Your monthly bill is $X. You know this in advance.
On a credit-metered platform, the deal is: pay $X monthly subscription, then buy credits in packs, then spend credits on actions at costs the platform sets. Your monthly bill is $X + however-many credit packs you consumed. You do not know what that number will be until the month is over.
This isn't a minor difference. It's a fundamentally different pricing shape.
Specific properties of credit-metered pricing that make it unpredictable:
Different actions cost different credit amounts, and the amounts are rarely front-and-center. Sending a message might be 5 credits. Sending a "boosted" message might be 25 credits. Generating a photo might be 50 credits. Generating a video might be 200 credits. Most users don't know these numbers before signup.
Platforms can silently change credit costs per action. A photo that cost 30 credits last month may cost 45 this month. No pricing-page update, no notification. Users notice at month-end when they burned through credits faster.
"Included" credits in the base subscription run out fast for active users. Sticker $9.99 might include 100 credits. Sounds fine until you learn a single video eats 50 of them and you send 20 messages a day.
Top-up packs are priced to feel small individually but compound. $4.99 for 100 more credits sounds trivial. Buying 6 packs a month is $30. Buying 12 is $60. Users rarely track this until the credit-card statement lands.
Comparison shopping is impossible. "$5.99/month" on a credit-metered platform is not comparable to "$9.99/month" on a flat-subscription platform. The credit-metered one might actually cost $30/month for the same use pattern. The sticker prices tell you nothing.
The other gotcha: some platforms charge you when generation fails
A specific dark pattern that's worth calling out separately, because it violates the basic expectation that you pay for what you get.
Grok Imagine video moderation, post-generation. You submit a video prompt. It runs the full generation (several minutes of H100 GPU time). Then Grok's moderation classifier fires on the output, decides the frames violate policy, and returns "content moderated." You get nothing. The quota / credit spent stays consumed. This is documented across community forums for SuperGrok users. The compute already ran; you paid for it; you got no video.
Failed generations on some AI image platforms. Network timeouts, prompt rejections, or infrastructure errors mid-generation. Depending on the platform, the credit may or may not be refunded. Many platforms are opaque about the policy — users report ad-hoc refund treatment that varies by support ticket.
"Retry" that costs a full second generation. When a generation returns a bad result (wrong pose, wrong subject, mangled hands), some platforms charge full price for the retry — same as a new generation. You paid twice for one usable output.
Priority Man boosts on Ashley Madison. You spend 15-30 credits to boost a message into a highly-messaged user's inbox. If she doesn't respond, the credits don't come back. The boost was for surface-placement, not for guaranteed engagement. Documented + widely-reported by male AM users.
The common thread: you pay for compute or attention that didn't deliver the intended result. On a flat subscription, this doesn't come up — the platform absorbs the cost of failures. On credit-metered pricing, the failure cost gets pushed to you.
The four patterns to watch for
1. Coin economies layered on subscription. Monthly sticker + coins/tokens/credits/gems consumed per action. Polybuzz, Candy AI, DreamGF all use this shape. The variable per-action layer is what makes real cost unpredictable. Not "inherently bad" — but you should assume real spend will be 2-4x the sticker if you actively use the product.
2. Opaque per-action pricing. Certain actions cost variable amounts, but you don't see the cost before you take the action. You tap "generate video" and find out afterward it consumed 50 credits. Some Grok Imagine tiers work this way. The platform is asking you to spend without knowing the cost.
3. Charge-on-failure. You pay for compute or attention that doesn't deliver a usable result. Moderated Grok videos. Priority Man boosts that don't get a response. Retries priced same as new generations. This is the dark-pattern-adjacent one.
4. Unpublished limits that move. Free tier and paid tier caps that shift based on server load or aren't documented anywhere. Character.AI has this structurally — free tier users hit caps around 50-80 messages/day on busy servers, but the platform doesn't publish specific numbers so users can't plan around them. Grok's fair-use throttle behaves similarly on paid tiers.
How to spot the pattern before you subscribe
Six specific things to check on any AI companion product's pricing page before typing a card number:
Look for the word "coins," "tokens," "credits," or "gems." If they appear alongside the subscription price, there's a per-action layer on top of the flat subscription. Read exactly what requires them and how many are consumed per action.
Look for daily/monthly limits published as specific numbers. Products that say "20 custom photos/month" are being specific. Products that say "premium generation access" without a number are being vague — usually because the number shifts or isn't their preferred framing.
Search "[product name] refund" and "[product name] hidden cost" on Reddit. Actual users complaining about specific billing patterns is the highest-signal data available. If the same complaints repeat across dozens of Reddit threads, the pattern is real. If community threads describe "I spent $X thinking it would be $Y," that's the credit-metered variance in action.
Ask the platform explicitly what happens on failed generations. If a video generation fails moderation, does the credit refund? If a photo generation errors out, is it billable? If the platform doesn't document the policy on their pricing page, ask support before subscribing and get the answer in writing. Platforms that treat failures as billable are telling you something about their pricing philosophy.
Verify the cancellation flow before subscribing. If the cancel path requires contacting support instead of clicking a button in account settings, that's a dark pattern that correlates with billing friction downstream.
Check community-reported "real monthly cost" for the product. DreamGF: sticker $9.99, real active-user $20-40/month. Ashley Madison: sticker $69/100 credits, real active-user $1,500-$2,000/year. These numbers exist in Reddit threads + review sites — search before signing up.
What transparent pricing looks like
A pricing model that isn't hiding anything shares four properties:
Flat monthly cost. One number, no per-action layer. What you pay is what you get.
Published counts for anything limited. If custom photos are capped, the cap is a specific number, not "premium access." If daily messages are capped, the cap is documented, not "moves with server load."
Cost-per-action visible before you tap. For anything that DOES consume a shared resource (credits for cross-tier upgrades), the cost shows in the UI before you take the action, not after.
One-click cancel in account settings. No support ticket required, no multi-step flow designed to discourage cancellation. Screenshot of the cancel confirmation available for record.
These properties are more common on newer companion products that arrived after the coin-economy patterns became well-known frustrations. Older platforms with entrenched token economies are unlikely to switch to flat because the token layer often subsidizes the base subscription price.
What Sloane charges — the whole picture
Free tier: $0/month. 50 messages/day across any persona. Photos included at the standard cadence. Chat with any of the ~80 curated personas.
Plus tier: $9.99/month. Unlimited chat. Unlimited non-custom photos (photos she sends on the natural cadence). 20 custom photos per month (photos you request specifically). Voice notes at the standard cadence. No coins, no tokens, no per-action layer on top.
Premium tier: $19.99/month. Everything in Plus. 70 custom photos per month (not 20). Custom AI girlfriend builder — spend money on training and pre-populating with images at a loss to the platform, per Sloane's operator. Unlimited chat.
Could Sloane lose money on a heavy Plus user who generates the full 20 custom photos every month, uses unlimited voice, chats constantly? Yes. Could Sloane lose money on a Premium user who builds a custom girlfriend and generates all 70 monthly photos? Also yes. The operator would rather users have a good experience than optimize per-action cost — because the alternative (nickel-and-dime pricing) is what makes the category feel scammy.
The trade-off: Sloane is smaller than the giants (Character.AI, Nomi). Curated ~80 personas vs millions of user-created bots. If catalog scale matters most, this is the tradeoff. If predictable spend with no hidden cost matters most, flat is the shape.
The specific platforms by pricing shape
Credit-metered — real cost significantly above sticker: - DreamGF — sticker $9.99. Real active-user monthly cost per community reports: $20-40. Sticker underprices by 2-4x for active use. - Ashley Madison — sticker $69 for 100 credits. Real active-user annual: $1,500-$2,000. Credit-metered without a monthly subscription option, so there's no "sticker" to compare against — the whole model is variable. - Polybuzz — subscription + coin layer for premium features. Real cost varies wildly with use. - Grok Imagine (SuperGrok tiers) — combined sticker + per-generation quota consumption + charge-on-moderation-failure. Practical cost depends on how many generations succeed vs get moderated.
Flat-subscription — sticker is the actual cost: - Sloane — $9.99 Plus / $19.99 Premium. Published photo counts (20 custom/month on Plus, 70 custom/month on Premium). No coin layer. Failed generations don't consume credits (Sloane absorbs the compute cost of failures). What you pay is what you get. - Candy AI Deluxe — $12.99/month. Flat. - Character.AI c.ai+ — $9.99/month. Flat (though the unpublished free-tier limits are a separate problem). - Nomi — $15.99/month. Flat with published tier features. - Replika Pro — $19.99/month. Flat.
The honest question isn't "which is cheapest" — most of these products list sticker prices in the same $10-20/month range. It's "which pricing shape do you actually want to interact with?" On flat-subscription you know your bill in advance. On credit-metered you don't. That's the axis that matters, not the sticker.