OpenAI employee says users select /fast less often on weekends
Tibo, identified in the supplied evidence as an OpenAI employee, says users choose /fast less frequently on weekends. The post is informal and includes no underlying metrics or methodology.
Tibo posted on X that users select the /fast option less often during the weekend, joking that weekends are a time to relax—even for the model. The remark reads as a lighthearted observation about product usage rather than a formal announcement or research release.
No sample size, measurement period, baseline, or raw data was provided. The additional evidence supports the broader possibility of weekday–weekend differences in online behavior, but it does not independently confirm /fast usage patterns. The claim should therefore be treated as an unverified internal observation.
Source evidence
[PDF] Understanding of the Day of the Week Effect in Online Consumer Behaviourarchives.marketing-trends-congress.com · supportingprefer to visit their site on weekends rather than weekdays when seeking product information. But they should also note that issues dealing with the financing and insuring of those same vehicles are best dealt with on weekdays. So the weekend becomes the promotional opportunity, but the weekdays provide the opportunity to work through the logic of the actual transaction. Because individuals have full choice over their web browsing activities, it is assumed that this online consumer behavior is also predictive of offline behavior. Future research could attempt to understand offline consumer behavior in the context of the day of the week and consumer modes. This study focused exclusively on American internet users. It would be beneficial to compare behavior across international consumer [...] behavior. Weekdays are dominated by more functional website activities, including business, government and health. Weekends, in contrast, are more social and lifestyle focused. IMPLICATIONS AND FUTU
Daily, weekly, seasonal and menstrual cycles in women's mood, ...homes.cs.washington.edu · supporting60. Won, H. R. & Abbott, J. Optimal management of chronic cyclical pelvic pain: an evidence-based and pragmatic approach. Int. J. Women’s Health 2, 263 (2010). 61. Haines, P. S., Hama, M. Y., Guilkey, D. K. & Popkin, B. M. Weekend eating in the United States is linked with greater energy, fat, and alcohol intake. Obes. Res. 11, 945–949 (2003). 62. Finlay, A. K., Ram, N., Maggs, J. L. & Caldwell, L. L. Leisure activities, the social weekend, and alcohol use: evidence from a daily study of first-year college students. J. Stud. Alcohol Drugs 73, 250–259 (2012). 63. Seasonal allergies: nip them in the bud. The Mayo Clinic [...] model estimate qualitatively similar trends but the mixed model estimates a considerably larger amplitude—0.65 versus 0.24 lb for the linear regression model. This discrepancy occurs because there is substantial change in the average weight of the population over time, likely caused by the expansion in the population using the app, and the mixed model attributes thi
The benefits of understanding weekday/weekend customer demand variation - SME Water Ltdsme-water.co.uk · supportingWhen looking purely at the data, such dramatic changes in net flow profiles between weekdays and weekends may give the impression that there is a possible event on the network, or unknown users are creating periods of high demand within the DMA. However, the more likely scenario is that changes in peoples daily routine is having a great effect on the overall demand pattern. Small alterations, such as not having to wake up to an alarm at the weekend, having time for an extra cup of tea or time to load the washing machine in the morning, can have a surprisingly dramatic effect. Especially if you consider that this could be multiplied by 1500-2000 household properties within a single DMA. Suddenly what seems like a trivial amount of extra consumption can create a totally different morning [...] The same can also be true for the changes in evening demand. Usually in the week most people will arrive home after their commute and have a structured evening and consistent bedtime routine. At th
Weekdays are the New Weekend: Recent Consumer Behavior Dataearnestanalytics.com · supporting#### Less Breakfast, More Lunch Given the broad shifts in consumer behavior to midday, we analyzed restaurants that offer breakfast and would be most sensitive to this shift. Looking at a selection of casual and fast food restaurants, this is indeed what the data suggests. Denny’s, Dine Equity (owner of IHOP and Applebee’s), and McDonald’s are together showing a sharp increase in lunchtime traffic, offset by decreases in breakfast and dinner traffic. Dine Equity mentioned this specifically on their 2Q20 earnings call, noting: > “Breakfast was approximately 200 basis points behind lunch and dinner, respectively. Mainly due to statewide mandates to remain at home and rising unemployment, there were essentially less people stopping for breakfast on their way to work.” > > Dine Equity 2Q20 [...] Shift to Middle of the Day. The overall distribution of consumer traffic (inclusive of all sectors) during COVID has seen morning and evening activity slow, picking up by midday. Midday (11am-3pm
Beyond weekdays: The impact of the weekend effect on eWOM of hedonic ...sciencedirect.com · supporting(Wang et al., 2016; Stone et al., 2012; Ryan et al., 2010; Kennedy-Moore et al., 1992). This phenomenon is often referred to as the ‘weekend effect’, signifying that moods tend to be more positive and less negative during weekends compared to weekdays (Ryan et al., 2010). [...] ## Access through your organization Check access to the full text by signing in through your organization. Access throughyour organization ## Section snippets ## Weekend effects The “weekend effect” concept is deeply ingrained in the societal structure of industrialized nations, where lifestyles revolve around a cycle of workdays and weekends. This cycle prompts systematic variations in numerous aspects of life (Godes and Silva, 2012). Individuals typically follow fixed routines throughout the week (Huttenlocher et al., 1992), with weekdays often dedicated to work demands and weekends providing opportunities for non-work activities, facilitating relaxation and ## Empirical context [...] Specifically, this
Tibo (@thsottiaux) / Xx.com · supportingLog inSign up user avatar Tibo Codex & ChatGPT @OpenAI Joined August 2025 69 Following388.9K Followers RepliesRepliesMediaMedia user avatar Tibo @thsottiaux 4h Fun fact, users use /fast less during the weekend. The weekend is for relaxation, even for the model. 170K user avatar Tibo @thsottiaux 13h The week was for efficiency. The weekend is for 10 major breakthroughs in science. There will be signs. user avatar Sebastien Bubeck @SebastienBubeck 20h yes, nonsofic groups exist: this statement is one of many new beautiful results proved by Astra, our next major model. We're releasing 10 such Astra proofs, complete with lean certificates and CoT walkthroughs for each of them. The results are wide-ranging, from von Neumann [...] 385K user avatar Tibo @thsottiaux 22h Optimize for curiosity 288K user avatar Tibo @thsottiaux Aug 1 To celebrate a week of efficiency and let you run 100'000 Luna threads this weeken