On June 12, 2026, xAI rolled out Grok Skills to all free accounts. The feature let users save custom instructions that Grok applies in every conversation. Free users received three skill slots. Each slot held up to 300 characters of user-defined rules or preferences. The announcement came through the official xAI blog and help center. This was a concrete expansion for people who did not pay for Grok. It followed months of tighter free-tier limits across the industry. For deeper context, see Grok Skills roll out to free users. The change meant users could ask Grok to always respond in a specific tone, avoid certain topics, or remember their job role. No subscription was required. That mattered because free AI tiers had been shrinking in 2026. The feature made personalization a free-tier standard rather than a paid perk.
The change hit every free Grok user globally. It also affected Premium and SuperGrok subscribers by expanding their skill slot counts. Free accounts got three skill slots. Premium accounts received twenty slots. SuperGrok accounts got fifty slots. Skill persistence differed by plan. Free skills stayed active for 30 days without use. Premium skills remained for 12 months. SuperGrok skills never expired. Users in the United States, Europe, and Asia saw the rollout on the same day according to xAI. The limits mirrored changes seen in AI free tier limits get tougher in June 2026. Free users had asked for memory features for months. Many complained that ChatGPT and Claude offered some memory tools even on free plans. Grok Skills answered part of that demand.
Why it mattered became clear by June 14. OpenAI had teased ChatGPT memory for free users but had not shipped full custom instructions. Anthropic restricted most Claude project features to paid plans. xAI decided to put basic personalization in front of free users anyway. That forced a competitive response. Industry watchers compared the move to AI subscription tiers compared across OpenAI, Anthropic, Google, and xAI. The free tier had become a battleground. Providers used limits to push paid upgrades. xAI took the opposite approach on personalization. It gave free users a reason to stay in Grok. The bet was that daily active use would convert some users to paid plans later. Data from the first week suggested 41 percent of free users activated at least one skill. That number came from an xAI spokesperson. It showed free users wanted memory and control.
On the same day, xAI also updated Grok to version 9.1 for free users. That version introduced faster response times and lower latency for skill matching. The previous free model, Grok 9 Medium, had been the default. The new version kept medium weights but added skill routing. Users could see active skills in a side panel. They could toggle them on or off per chat. The update did not remove the five-hour reset seen in Grok v9 Medium free users. Instead, it layered personalization on top of existing compute caps. This distinction mattered. Free users got more control without more compute. That was a smart way to offer a feature without raising inference costs. The company said skill storage used negligible compute. Only the routing logic consumed a small amount of token overhead.
How Do the Top Options Compare?
| Plan | Skill Slots | Persistence | Invocation Limit | Custom Triggers |
|---|---|---|---|---|
| Grok Free | 3 | 30 days | 10 per hour | Basic phrase triggers |
| Grok Premium | 20 | 12 months | 100 per hour | Advanced phrase and context triggers |
| Grok SuperGrok | 50 | Never expires | Unlimited | API and regex triggers |
| ChatGPT Free | Custom instructions (limited) | Session only | Not applicable | No custom triggers |
Comparison based on June 2026 announcements. Limits may change. Free AI News may earn a commission if you sign up for a paid plan through links on this site. This does not affect our reporting.
1. Grok Free Skills , Free users who want persistent custom instructions
Free users received three skill slots on June 12, 2026. Each slot accepted up to 300 characters. Users could write rules like ‘always answer in plain English’ or ‘remember I am a data engineer.’ Grok applied these rules in every new chat. The feature did not require a paid plan. That was the headline. It changed the free tier from a stateless chatbot into a tool that remembered user preferences. More details appeared in Grok Skills arrive for free users. The update landed after weeks of speculation that xAI would follow OpenAI’s lead and restrict memory tools to paid tiers.
Storage limits were real. Free users could not exceed three skills. The 300-character cap forced brief, focused instructions. Skill persistence lasted 30 days. If a user did not invoke a skill for a month, xAI deleted it. The company said this protected free-tier storage costs. Users could export skills before deletion. Free accounts also faced a ten invocation per hour limit. That meant a skill could fire only ten times in a rolling hour. For casual users this was fine. Heavy users hit the wall quickly. The limits echoed patterns in AI free tier limits tighten in June 2026.
Despite the caps, free users gained something they had lacked. They could personalize tone, format, and scope. The side panel showed active skills. Users toggled skills per chat. That flexibility reduced friction. Grok did not force the skills on every response. The routing logic detected relevant context. If a user said ‘write a SQL query,’ the data engineer skill triggered. Otherwise it stayed dormant. This design kept token overhead low. xAI said skill routing added about 0.3 percent to inference cost per request. That was a tiny price for retention gains.
Key strengths:
- ✅ Adds persistent personalization without a paid plan
- ✅ Clear three-slot limit for casual users
- ✅ Toggle skills per chat for control
- ✅ Low overhead means feature may stay free
- ❌ Three skill slots fill up quickly
- ❌ 30-day persistence deletes unused skills
- ❌ Ten invocations per hour limits heavy use
Who it’s for: Free users who want basic memory and custom instructions in Grok.
2. Grok Premium Skills , Paid users who need more skill slots and longer memory
Premium subscribers received twenty skill slots. That was a jump from three on the free plan. Each slot accepted 500 characters. Premium skills persisted for 12 months of inactivity before automatic deletion. Invocation limits rose to 100 per hour. The feature gave paying users a reason to upgrade. The contrast with free was stark. It mirrored the broader pattern in AI subscription tiers compared across OpenAI, Anthropic, Google, and xAI. Premium users could create complex rules that spanned workflow contexts. They could define a skill for coding, one for writing, one for finance.
Premium also unlocked advanced triggering. Users could set context conditions. For example, a skill could fire only when the prompt contained ‘financial report’ and the user asked for an executive summary. Basic free triggers were phrase-only. Premium triggers combined keywords, user role, and output format. The extra control justified the monthly fee for some users. xAI kept Premium pricing unchanged at $30 per month. Existing subscribers saw the new skill slots appear automatically. No migration was needed.
One limit remained. Premium skills did not work across shared chat links. A skill was private to the account that created it. If a user shared a Grok conversation, the recipient did not see active skills. This privacy boundary prevented accidental leaks of role information. It also meant collaborative workflows had to manually re-create skills. For teams, SuperGrok was the better option. But for individual professionals, Premium struck a practical balance.
Key strengths:
- ✅ Twenty slots cover multiple work contexts
- ✅ 500-character instructions allow richer rules
- ✅ 12-month persistence prevents data loss
- ✅ 100 invocations per hour supports heavy use
- ❌ Still costs $30 per month
- ❌ Not available on shared or collaborative chats
- ❌ Advanced triggers require learning syntax
Who it’s for: Professionals who use Grok daily and need persistent, detailed personalization across work tasks.
3. ChatGPT Memory , Free and paid ChatGPT users who want automatic memory, not manual skills
OpenAI had shipped automatic memory to some ChatGPT users by June 2026. But full custom instructions for free users remained inconsistent. Free ChatGPT accounts could set a short custom instruction field. The system stored it for the session only. Persistent memory across chats was still a paid feature in many regions. That changed gradually. ChatGPT memory on the free tier remained a dream for many users. The comparison with Grok Skills became direct. xAI gave free users three explicit skill slots. OpenAI offered a blurrier, less predictable memory.
ChatGPT’s memory model was more passive. The system inferred user preferences from chats. It did not always show what it remembered. Users could not always edit stored facts. Grok Skills used a manual, user-authored approach. That gave more control but required more effort. Some users preferred ChatGPT’s automatic style. Others found it opaque. The two approaches split the market. OpenAI had not announced a date for free persistent memory at the time of xAI’s rollout. That delay gave xAI a brief advantage.
Competitive pressure was real. Within days of the Grok Skills announcement, OpenAI support pages updated to note that free custom instructions would expand in late June. That timeline came after the news. It suggested xAI forced a response. The broader context appeared in major AI model tier changes: flagship models now paid, free tiers get lighter. Free users benefited from the rivalry.
Key strengths:
- ✅ Automatic memory requires no manual setup
- ✅ Available on some free plans in limited form
- ✅ OpenAI rapidly iterating after xAI move
- ❌ Free persistence still inconsistent
- ❌ Opaque memory hard to review
- ❌ Custom instructions often session-only
Who it’s for: ChatGPT users who prefer automatic memory over manually configured skills.
4. Claude Projects , Anthropic users managing context-heavy, project-specific instructions
Anthropic positioned Claude Projects as a way to store project knowledge. The feature let users upload files and set custom instructions per project. But most Project features sat behind the Pro or Max plans. Free Claude users had minimal access. The contrast with xAI was sharp. Free Grok users received three skill slots with no file uploads. Free Claude users got a limited console prompt. The difference in philosophy showed. Anthropic focused on deep project context for paid users. xAI pushed lightweight personalization to free users. More on Anthropic’s free tier limits appeared in Anthropic free tier policy console credits.
Claude Projects supported much larger instruction sets. Paid users could upload files and use knowledge bases. Skill slots in Grok were capped at 300 or 500 characters. Projects could reference entire documents. For professional workflows, Claude Projects was stronger. But it cost more. Claude Pro ran $20 per month at the time, with usage limits. Max cost $100 per month. Grok Premium at $30 undercut Max on price but offered less context depth. The right choice depended on whether a user needed file-level memory or just preference rules.
Anthropic did not announce a free-tier Projects expansion on June 12. The company had already shifted free users to a credit pool earlier in June. That decision upset some users. The gap between free Claude and free Grok widened. xAI’s move highlighted how aggressive free-tier competition had become. It also showed that personalization could be delivered without heavy file storage.
Key strengths:
- ✅ Supports large file-based context
- ✅ Deep project separation for teams
- ✅ Strong paid-tier feature set
- ❌ Minimal free-tier access
- ❌ Requires paid plan for real use
- ❌ No lightweight free skill slots
Who it’s for: Paid Anthropic users who need document-level project memory, not simple preference rules.
Frequently Asked Questions
What are Grok Skills?
Grok Skills are user-authored instructions that Grok applies in conversations. Users write rules about tone, format, or personal context. The system detects when a rule should trigger and applies it automatically.
Did free users get Grok Skills for free?
Yes. Starting June 12, 2026, all free Grok accounts received three skill slots at no cost. No subscription or payment method was required.
How many skill slots do free users have?
Free users received three skill slots. Each slot accepted up to 300 characters. Premium users got twenty slots with 500 characters each. SuperGrok users got fifty slots.
What happens if I don't use a skill for 30 days?
On the free plan, unused skills expired after 30 days. xAI deleted the skill to manage storage costs. Users could export skills before deletion. Premium persistence lasted 12 months.
How do Grok Skills compare to ChatGPT memory?
Grok Skills use a manual, user-authored approach. ChatGPT memory is more automatic and often infers preferences from chats. Free ChatGPT memory remained inconsistent in June 2026, while Grok gave explicit free slots.
Can I use Grok Skills on mobile?
Yes. The rollout covered the Grok mobile apps on iOS and Android. Users could toggle skills per chat from the side panel on mobile and desktop.
Does Grok Skills cost anything for premium users?
No additional cost applied. Premium and SuperGrok subscribers gained expanded skill slots as part of their existing plans. Premium pricing stayed at $30 per month.
What Should You Remember?
- Free tier: xAI gave all free users three Grok Skills slots on June 12, 2026.
- Premium expansion: Paid users received twenty to fifty skill slots with longer persistence.
- Limits: Free slots expired after 30 days and allowed only ten invocations per hour.
- Competitive pressure: The move forced OpenAI and Anthropic to revisit free-tier memory features.
- Cost design: Skill routing added only 0.3 percent to inference cost per request.
- Retention play: xAI used free personalization to keep users in Grok and convert some to paid plans later.
Free AI News is an independent editorial publication. Information about AI pricing, free-tier limits, and features changes frequently and may become outdated. Always verify current details through the vendor’s official pages. Affiliate links may earn a commission at no cost to you, and never affect our reporting.
