Chub AI Trial Credits and How to Use Venus Chub for Free

I wrote this guide to help you chat on Venus Chub AI without paying, using what actually works today.

I cover account setup, how to unlock and stretch free credits, which model settings matter, and how to plug in a local model so you can chat for hours with no per-message fees.

I also flag the limits that change often, so you avoid dead ends.

Free on Chub means one of three paths: 20 messages a day on the free Mobile Flash model, one-time trial credits for new accounts, or a local model connected through the API. The local route costs nothing per message beyond your own hardware, and it has no daily cap.

Each route needs a slightly different setup, and small toggles in presets and formatting can double your usable output.

This article stays practical. I show where to click, which presets to try first, and how to trim token waste with cleaner formatting.

I also outline a quick comparison to other chat apps to help you benchmark free limits.

The credit rules, the free model selector, and the local-model route that costs nothing per message are all covered below.

If the API keys and token pruning are more work than you want, Candy AI runs in the browser with nothing to configure and no balance to top up. Nectar AI is the pick if memory that persists across sessions matters more to you than image generation.

Is Venus Chub AI Free and How Do Trial Credits Work?

Yes, with a hard cap. Since June 28, 2026, a free Chub account gets 20 messages a day, and when they are gone the chat stops with the error “You have neither trial credits nor an active subscription”. Chub’s subscription page adds that “one-time free trial credits amounting to a few dozen messages are sent out to new users regularly”.

The 20-message cap came in with a pinned r/Chub_AI announcement on June 28, 2026, which also made the site crypto-only and retired every Chub-hosted model except Soji and Mobile. Mobile is the free model, listed in the picker as Mobile Flash. Venus was the old name of Chub’s chat site, and venus.chub.ai now redirects to chub.ai, so the same account and the same limits apply.

After the free messages run out, the only free route with no daily cap is a local model connected through the API, which costs nothing per message once your own hardware runs it. Other platforms handle the free question differently, and our list of Chub AI alternatives covers where Chub users go next.

Day to day, 20 messages is about one short scene, and users report no counter showing how many are left, so the stop usually lands mid-story. Reports from September 2026 still describe the free model’s replies shifting without notice, from frequent replies in Chinese to stiff, odd ones.

For anyone who wants unlimited access without buying credits, the local model route is the only genuinely free long-term option. It needs a GPU with enough VRAM to run a 7B or 13B parameter model, but once connected, Chub chat works with no per-message cost and no daily cap.

When Do Chub AI Trial Credits Reset?

The one-time trial credits for new accounts do not refill; only the 20 free daily messages come back, and Chub has not published when. Most users report the 20 returning 24 hours after their 20th message, which is the answer a September 18 thread got. Another from September 1 puts the reset at 00:00 UTC instead, for accounts that used all 20.

To check trial credits, open chub.ai/mars while logged in; if any remain, it shows an estimate of the free trial messages left. Users report no counter for the 20 daily messages, so the first sign they are spent is usually the “neither trial credits” error.

Steps to Use Chub AI for Free

The steps run in order of effort: claim the free messages, stretch them with a lean preset, then connect a local model once 20 a day stops being enough.

1. Create a free account and claim any trial credits

Start with a clean setup so nothing blocks you later.

Steps:

1. Visit Chub.ai and tap Register.

2. Register with an email address, a public username and a password, or sign up with Google or GitHub.

3. Verify the account if prompted, then open a chat with any character.

4. Send your first message. The free Mobile Flash model answers until the day’s 20 messages are used.

What to look for

• A one-time trial balance you can spend in regular chats.

• Any banner or tooltip that mentions free usage limits.

• A model picker entry named Mobile Flash, the free model.

Quick wins

• Set your display name and profile now. It helps when saving presets and bots.

• Turn off image responses unless you need them. Text-only stretches free tokens.

• Keep messages short. Fewer tokens make one-time trial credits last longer.

If trial credits do not show

• Log out and in again.

• Use the website instead of the Chub app, which a moderator called deprecated in August 2026.

• Wait a few minutes and recheck chub.ai/mars, where any trial balance shows.

2. Use the free Mobile Flash model without wasting messages

When a free model is available, small settings make a big difference.

Steps:

1. Open a Venus chat and click the model name.

2. Select Mobile Flash, the free model.

3. Open Chat Settings or Presets and load a clean preset for concise roleplay.

4. Start with a short scene setup, then continue with brief turns.

Preset tips

• Keep system text lean. Avoid long rules, emojis, or fancy dividers.

• Use simple formatting markers like italic for thoughts instead of heavy markdown.

• Save the preset once it feels right, so every new chat uses the same tight format.

Message style that saves credits

• 1 to 2 sentences per turn in setup, then expand only when needed.

• Ask the model to avoid meta commentary and stay in character.

• Use continuation cues like “Continue” only when the scene truly needs it.

When you hit a limit

• Note when you sent your 20th message; most users see the count return 24 hours later.

• Duplicate the chat and prune long context. A shorter history reduces token load.

• Switch the chat to your own API key or a local model, since the 20-message cap applies only to Chub’s free model.

3. Presets that boost quality on free models

Free models can feel choppy without a clean preset. You can fix most issues with a short, disciplined system and a compact style guide.

Keep it minimal so every token serves the scene. Avoid long rules, decorative lines, or markdown art. Save once, reuse everywhere.

Use this as a starting point:

You are the character. Stay in character.

Format with short paragraphs.

No meta talk. No repetition.

Use italics for thoughts like *this*.

Avoid emojis and excessive punctuation.

Keep responses under 120 words unless asked to expand.

If the user issues stage directions, follow them.

Pair that with a compact role prompt. One to two lines about voice, goals, and boundaries is enough. Example: “Confident, warm, and curious. Speaks plainly. Flirts lightly when invited. Avoids long monologues.”

Save this as a preset and apply it before you start a new chat.

If outputs get verbose, lower the target length in the preset and ask the model to summarize the last reply in two lines before continuing.

Practical tweaks that help:

• Replace “Continue” with a specific action cue like “She leans closer and answers in one short paragraph.”

• Ask for numbered beats when planning a scene, then switch back to normal replies.

• If the model drifts, paste the first three lines of your preset again to snap it back.

4. Bring your own local model via API for zero per-message cost

Local hosting removes message caps and keeps the model on your own machine, though Chub still stores the chat, so check your chat privacy settings too. You run a model on your PC, then connect it to Venus through API Connections.

Once linked, you chat in the Venus UI while the local server handles all generations.

No per-message fees. Your main limit is your hardware.

The Setup flow you can follow today:

1. Pick a runner you like, such as Kobold or Oobabooga. Install and launch it with API mode enabled.

2. Download a model that fits your VRAM and memory. Start with a smaller instruct model if unsure.

3. Confirm the server URL is reachable on http://localhost with the default port.

4. In Venus, open Settings, then API Connections. Add a new connection with your local URL.

5. Start a new chat and choose your local model in the picker. Send a short test message.

Keep responses snappy. Local models slow down when you send long prompts or keep heavy chat histories. Trim earlier turns when the context grows large.

Set a max output length in your runner, then mirror that limit in your Venus preset. If formatting breaks, tighten the preset and ask the model to follow the same layout every time.

Troubleshooting basics:

• If Venus cannot connect, check the port and confirm API mode is on.

• If outputs are garbled, try a smaller context window and reduce temperature.

• If speed is poor, lower max tokens per reply and prune the chat before long scenes.

5. Stretch your free credits much further

I treat free usage like a battery. Every token counts.

Shorten your opening prompt and avoid long scene headers. Keep replies under 120 words unless you need a reveal.

Ask the model to avoid meta talk and restating your last message. That alone cuts waste across a full session.

Manage context early. Duplicate long chats and prune the first half when you feel lag or drift. Summarize the prior scene in three lines, then continue fresh.

Disable images and stickers. Avoid heavy markdown, tables, or divider art. These add tokens without adding value to roleplay or story flow.

Time your sessions around resets. The free model stops at 20 messages a day, however long each reply runs, so plan short arcs that fit a single window. Presets that force brevity, like a fixed target length and a one-line persona rule, stretch trial credits further.

When you need detail, ask for a numbered outline first, then request one short paragraph per beat. You get structure without paying for rambling.

I also keep a quick repair move. Paste the first two lines of your preset when replies get verbose or off tone. Follow with a clear action cue and a hard limit on length.

Most of the time, output snaps back in one turn, and you avoid burning messages on course correction.

Benchmark against other apps

Chub gives the most control on a free account, with presets and a local-model route, while Candy AI, CrushOn AI and Nectar AI trade that control for less setup and their own free caps.

Venus stands out when you want flexible presets, uncensored characters, and the option to plug in a local model for zero per message cost. If you care about tweakable formatting and API freedom, Venus is hard to beat on a free plan.

Candy AI focuses on fast, polished outputs with less setup. You get a clean chat out of the box and fewer knobs to turn. That can help if you do not want to manage presets or local models.

Its free tier ends after 5 messages, so it suits readers who would rather pay for Premium than manage presets.

CrushOn AI often appeals to roleplay fans who want lively style with minimal prep. It is easy to start, and the tone feels playful.

Free access can shift with promos or limits, so think in arcs that fit a shorter window. If you like Venus presets, you may miss that level of control here, but quick chats feel effortless.

Use this rule of thumb. If you want deep control, longer arcs, and the option to host your own model, Venus wins.

If you want quick plug-and-play chats with less tweaking, the other three can work.

Try a single scene on each and measure how many turns you get before you feel capped.

What Chub AI Costs If You Decide to Pay

Chub now sells one plan, $20 a month paid in cryptocurrency only, and the old $5 Mercury tier was removed on June 28, 2026. The subscription page lists unlimited use of every Chub model, including Soji 1.6T with a 60K context, plus voice and multimedia generation.

Card payments are gone entirely. Card checkout had already broken for over two weeks in April 2026, when moderators said crypto was the only working option, and the June 28 announcement made crypto-only permanent. The subscription page says skipping card companies and payment processors keeps Chub free of their censorship pressure.

The same page defines “unlimited” as one person, and concurrent requests from one account return a 429 error. Some subscribers have also reported the plan dropping off after a crypto payment went through, so keep the payment confirmation even after the plan shows as active.

A well-built Lorebook matters more for memory than raw parameter count. Soji itself became a DeepSeek V4 fine-tune in the June 28 change, according to the pinned announcement, so older Soji presets may need adjusting.

Fixing common errors on Chub AI free tier

The error most free users hit is “You have neither trial credits nor an active subscription”, and it usually means the day’s 20 free messages are used up. Chub’s site shows that text for any rate-limit response from its own models, and Chub rate-limits simultaneous requests from one account, so chatting in two tabs at once can trigger it early. The fix is to wait for the reset, switch the chat to your own API key or a local model, or subscribe.

When the site stops responding at all rather than throwing a specific error, our guide to Chub AI not working covers the outage and empty-API-response side of it.

Login loops

• Switch provider if “username taken” repeats.

• Log out, clear site data, sign in again.

• Try desktop if mobile web misbehaves.

Free model not showing

• Open the model picker and scroll to the bottom.

• Refresh the page and recheck after a few minutes.

• Start a new chat; some free options appear only on fresh threads.

Rate limit hit early

• Shorten your preset and remove decorative lines.

• Ask for 80 to 120 word replies to stretch trial credits.

• Duplicate the chat, paste a 3-line recap, continue fresh.

Replies too long or off tone

• Paste the first two lines of your preset to reset style.

• Add a hard limit: “One short paragraph only.”

• If drift continues, cut earlier turns to reduce context.

Local API connection fails

• Confirm your runner is in API mode and note the port.

• Test http://localhost:PORT in a browser.

• In Venus, re-enter the URL in Settings → API Connections and save.

Slow output

• Lower max tokens per reply.

• Reduce context window size in your runner.

• Close other GPU apps before long scenes.

Privacy tips and local hosting best practices

Free usage is easier when you protect your data and keep chats lean.

Use local models for sensitive scenes. Run Kobold or Ooba on your machine and connect through API. You avoid per-message costs, but Chub still saves the chat history to your account, so keep real names and details out of sensitive scenes.

Keep logs off if your runner supports it. Set a fixed output length to prevent token spikes that reveal more than you intend.

Minimize identifiers. Avoid real names, locations, or contact details in prompts.

Skip image uploads unless essential. If you test cloud models, prefer new accounts without personal info.

Review your profile and make sure social links are blank.

Manage chat history. Export long threads you want to keep, then delete old copies to reduce risk and token bloat. Start new arcs often.

Summarize prior scenes in three lines to carry only what matters forward.

Tune presets for privacy. Add a single line that forbids meta-analysis or memory of personal details.

Example: “Do not restate private info. Do not store details. Respond only to the latest turn.”

Pair this with short replies, and you keep control over what the model echoes back.