The Tensor.Art alternative where NSFW stayed free.

What happened on November 27, 2025

Per Tensor.Art's announcement, the main platform became fully SFW that day. NSFW prompts are blocked outright, and output that trips the filter is auto-censored. Adult generation moved to a separate, token-gated site — TensorHub — running on its own currency. SFW work stayed put; everything adult crossed the fence.

The terms of the move drew most of the anger. TensorHub launched with no free daily allocation, and existing credits could be converted to its tokens once, at 2:1 — a swap users widely described as a 50% haircut. Users also report that credits spent on generations the new filter blocked weren't refunded.

None of this was illegal or even unusual — platforms adjust to processors, app stores and advertisers all the time. But "the rules can change and your balance can be repriced" is now part of the deal you accept there, and it's worth naming plainly before you spend again.

If you'd built a habit there — a style, a character sheet, a nightly queue — that wasn't an inconvenience. It was the platform re-pricing your hobby after you'd already paid. The rest of this page is about a place where that can't happen, because there's nothing to convert and nothing that expires.

A balance that behaves

A wallet should be boring. November made wallets interesting in the worst way — so here is SirenRender's entire policy, and none of it has an asterisk:

• Credits never expire — no seasons, no resets, no conversion events, ever.
• One currency — the same credits cover premium images, edits and video. There's no second site with a second token.
• Packs from $1 — one-time crypto payments (USDC and others). No card on file, so nothing can auto-renew or silently rebill. Any credit pack, even the $1 one, turns the ads off for good.
• Siren Pass, $12.99 — 30 days: front of the render queue on every engine, premium tiles at no credit cost (fair use 150/day), unlimited edits, no ads, no watermark, 5 saved Sirens, a top-up to 2 credits every day. Non-recurring. Video still costs credits. It expires unless you top it up — the closest thing to a subscription here, and it isn't one.

A 2:1 conversion is only possible when a platform controls both sides of the swap. SirenRender never mints a new currency, so the swap can't exist. What you bought is what you hold.

The same logic protects lapsed users. Walk away for six months and your balance is exactly where you left it — no expiry sweep, no inactive-account clause, no email asking you to log in before your points vanish.

The free tier, side by side

Dates and terms, not adjectives. One column comes from Tensor.Art's own announcement and its users' public reaction; the other is simply how this site works.

Anonymous matters here too. The free tier doesn't ask who you are, and signing up — if you ever bother — takes a throwaway email. No KYC, no phone number. For adult work that's a real difference: the account you never created can't be leaked or breached.

Built for the work you were already making

Tensor.Art's crowd skews anime and character illustration. So does a lot of ours — and the toolset runs wider than stills. Nothing below needs a checkpoint download or a workflow file.

• WAI-Illustrious, free — booru-tag prompting from SFW through hentai, on the anime tier.
• Quick Generate (Krea 2) — free photoreal renders in seconds; see the realistic page.
• AI image editor — 5 free edits a day, no credit needed.
• Bring It to Life — 0.5 credit/sec, 2-credit minimum (Wan 2.2 Video: 1 credit/sec, 3-credit minimum). Paid from the same credit balance.

Everything sits on one domain, behind one balance. There is no "main site" and "adult site" — the uncensored models are the site. And if Illustrious-family checkpoints were your home on Tensor.Art, the anime tier will feel familiar from the first prompt: same tag grammar, same strengths.

What fifty a day actually covers

Fifty free generations sounds like a marketing number until you spend a day with it. In practice it's a working allowance, not a teaser.

• Iterate a character — twenty renders to lock a face, outfit and palette, thirty left for scenes.
• Test the ceiling — run the same idea across Anime & Hentai, Quick Generate and Nudity & Sex and compare.
• Polish with the editor — 8 free edits a day, on top of the 50 generations.
• It resets daily — no monthly pool to ration, no rollover math.

Because it's free, experimenting carries no bill. The habit TensorHub priced — trying things — is the part that costs nothing here. And if you eventually outgrow it, the smallest paid step is a $1 credit pack, not a token bridge.

One site, and what you make stays yours

There's no second domain to migrate to and, deliberately, no public gallery of user generations — no feed, no rankings, no strangers browsing your output. Everything renders on GPUs SirenRender owns; prompts never go to a third-party API and are never used for training. The full pledge — hardware, privacy, moderation — is written out on the why page.

A public feed is the part people forget to worry about. On gallery-driven platforms, your generations become content for the site. Here they're output for you: nothing performing for an audience, nothing farming engagement, and nothing for a search engine to index anywhere near your name.

18+ only. SirenRender is an adult service for fictional, generated people. Real-person likenesses aren't allowed, sexual depictions of minors are blocked and logged, and uploads of real people can't be edited into nudity.

Questions

Keep exploring

One studio, several engines. And if your move started on a different platform, the Civitai story is told the same way — dates, terms, and what stayed free.