Grinning Face With Smiling Eyes Emoji
U+1F604:smile:About Grinning Face With Smiling Eyes π
Grinning Face With Smiling Eyes () is part of the Smileys & Emotion group in Unicode. Added in Unicode E0.6. Type on GitHub and Slack to use it. On TikTok, type in comments to insert it. Click copy above to grab it, paste it anywhere.
Works in iMessage, WhatsApp, Discord, Slack, Instagram, Twitter, Gmail, and every app that supports Unicode.
Often associated with eye, eyes, face, and 9 more keywords.
Meaning varies across cultures, see cultural notes below.
Scroll down for the full story: meaning, trends, combos, and more.
How it looks
What does it mean?
A yellow face with a broad, open smile showing upper teeth and crescent-shaped smiling eyes. Of the five nearly identical grinning faces on your keyboard (π π π π π), this one is the warm one. The smiling eyes make π look like it actually means it.
That wasn't always obvious. Before September 2016, Apple's version of π looked so much like π¬ that a University of Minnesota study found it was the most misinterpreted emoji across platforms. Apple users rated it negative. Everyone else rated it positive. The sentiment gap was 4.7 points on a -5 to +5 scale. The broader study found that 25% of emoji tested couldn't even achieve agreement on whether they were positive, negative, or neutral. Even within the same platform, users disagreed by an average of 1.88 points. Across platforms, the gap widened to 2.04. The Washington Post covered the chaos in April 2016. Android Police called Google's version "constipated." People started Change.org petitions to bring back Apple's old design.
Today π is finally stable across platforms. It reads as genuine happiness with warmth behind it. The smiling eyes (curved like crescents, not wide open like π or neutral like π) are what make it feel real. The whole face is smiling, not just the mouth. That's the difference between a polite grin and a Duchenne smile, the involuntary kind where your eyes crinkle because you can't help it. You can search all five grinning faces on LetsEmoji to compare how they render on your device.
π is the grinning face people reach for when they want something warmer than π but less intense than π. "Dinner was amazing π" or "Can't wait to see you π" or "Just got accepted! π." The smiling eyes add sincerity that the other grinning faces lack.
It's popular in group chats and social responses because it reads as friendly without being over the top. Where π says "that's hilarious" and π€£ says "I can't breathe," π says "that made me smile." Lower stakes. More versatile.
On Instagram and TikTok, π shows up in comments that want to be warm but not intense. "Love this π" is softer than "Love this π" and more personal than "Love this π." It occupies a sweet spot of moderate positive emotion that keeps things light.
There's a generational layer too. 74% of Gen Z uses emojis differently than their intended meaning, and the grinning family in general reads as "older" to younger users who prefer π for humor or ironic emoji use. But π escapes most of the boomer-cringe stigma that hits π and π€£, probably because it's not trying to be funny. It's just happy.
Genuine happiness with warmth. The crescent-shaped smiling eyes are what set π apart from the other grinning faces: the whole face is smiling, not just the mouth. It conveys the kind of happiness you can't fake, what psychologists call a Duchenne smile.
A Duchenne smile is a genuine smile that involves the muscles around the eyes (orbicularis oculi), making the eyes crinkle. Named after French neurologist Guillaume Duchenne, it's the marker psychologists use to distinguish real happiness from polite or forced smiles. π's crescent-shaped smiling eyes are designed to represent this.
The Duchenne Paradox: Warm Eyes, Cool Tweets
What it means from...
Good sign. π from a crush means they're genuinely happy in the conversation. It's warmer than π or π (which are more generic) but not as loaded as π (which is flirty). The smiling eyes suggest real pleasure, not just politeness. If they're using π consistently, they enjoy talking to you.
Comfortable happiness. π from a partner is the low-key version of affection: 'I'm having a good time with you.' It doesn't carry the intensity of π or π₯° but it's genuine. It's the emoji of Tuesday-night couch happiness, not first-date fireworks.
The most natural context for π. Friends use it to say 'that's great!' or 'I'm happy for you' or just to keep the mood light. No subtext, no ambiguity, just friendly warmth. This is π's natural habitat.
Safe and professional. π in a work message means 'I'm being friendly, not just formal.' It carries more warmth than π (which is robotic) and less risk than π (which could be misread). Good for 'Great job on the presentation π' or 'Looking forward to the meeting π.'
Inoffensive friendliness. π from someone you don't know well (a new connection, a customer service rep, a landlord) is just them being nice. Take it at face value. The smiling eyes add warmth but no hidden meaning.
Flirty or friendly?
Almost always friendly. π is one of the least flirty emojis in the keyboard. The smiling eyes convey warmth, not attraction. If someone wanted to flirt, they'd use π, π, or π. π is the emoji of 'I'm happy right now,' not 'I'm interested in you.' The only scenario where π reads as mildly flirtatious is if it's paired with compliments: 'You looked great today π' has a different weight than 'Good meeting today π.' But that's the words doing the work, not the emoji.
He's happy in the conversation. π is one of the least loaded emojis, so don't over-analyze it. The smiling eyes suggest real warmth, not just politeness. If he wanted to flirt, he'd use π or π. If he wanted to show attraction, he'd use π. π means he's genuinely enjoying talking to you.
She's being warm and friendly. π's smiling eyes add sincerity that other grinning faces lack. It's warmer than π (generic) and less intense than π₯° (affectionate). In most contexts, it means she's having a good time and wants you to know. Don't read romantic intent into it unless other signals confirm it.
Emoji combos
Origin story
The story of π is really the story of the most confusing emoji redesign in history.
When Apple first rendered π for iOS, the smiling eyes and clenched teeth looked so similar to π¬ (grimacing face) that users couldn't tell whether they were sending happiness or discomfort. The two emoji differed by a few pixels. On a phone screen, that difference disappeared. You'd text someone what you thought was a cheerful grin and they'd wonder why you were grimacing at them.
In April 2016, researchers at the University of Minnesota's GroupLens Lab published a paper titled "Blissfully happy" or "ready to fight" documenting the problem. They had 334 participants rate emoji sentiment on a scale from -5 to +5. The grinning face with smiling eyes was the single most contentious emoji in the study. Apple users rated it negative. Samsung, Google, LG, and Microsoft users rated it positive. The gap between platforms hit 4.7 points, the widest of any emoji tested. NPR covered the study. Fast Company called it "the world's most confusing emoji."
The fallout was real. Frustrated users launched Change.org petitions demanding Apple bring back the old design. Others wanted it changed to look more clearly happy. Android Police published a piece celebrating that Google's redesign in Android O meant the emoji "no longer looks constipated."
Apple fixed the design in iOS 10 (September 2016), giving π clearly distinct eyes from π¬. Google followed in Android O (2017). By 2018, the grimace confusion was mostly resolved. But for six years (2010-2016), π was Schrodinger's emoji: simultaneously a grin and a grimace depending on who received it.
Approved in Unicode 6.0 (2010) as SMILING FACE WITH OPEN MOUTH AND SMILING EYES. Added to Emoji 1.0 in 2015. Later renamed via CLDR to "Grinning Face with Smiling Eyes." Part of the same Unicode 6.0 batch as π, π, and π, all arriving two years before π in Unicode 6.1. The original Unicode name is a mouthful (19 words) because they were trying to be precise about what exactly was going on with this face's mouth AND eyes. The CLDR rename trimmed it to five words.
Design history
- 2010Unicode 6.0 approves U+1F604 SMILING FACE WITH OPEN MOUTH AND SMILING EYESβ
- 2015Added to Emoji 1.0. Renamed via CLDR to 'Grinning Face with Smiling Eyes'
- 2016University of Minnesota GroupLens study finds π is the most misinterpreted emoji across platforms, with a 4.7-point sentiment gap between Apple and other renderingsβ
- 2016Apple redesigns π in iOS 10 (September), finally making it clearly distinct from π¬ grimacing face
- 2017Google redesigns π in Android O so it 'no longer looks constipated' (Android Police)β
- 2023π search interest spikes to 95 on Google Trends (Q2 2023), overtaking π as the most-searched grinning face, likely from renewed cross-platform confusion discourse
Around the world
The grimace/grin confusion wasn't just a design issue. It exposed a deeper problem in cross-cultural emoji communication.
In Western cultures, smiling eyes signal warmth and genuineness. A Duchenne smile (where the eyes crinkle) is considered the mark of real happiness across American and European cultures. π is designed to evoke this. In Chinese digital culture, smiley faces can carry undertones of sarcasm or performed politeness. The broader the smile, the more suspicious it looks to some Chinese users.
There's also the eye-culture vs mouth-culture divide. Japanese people tend to read facial expressions through the eyes, which is why Japanese kaomoji emphasize eye characters: (^_^) uses carets for happy eyes. Americans tend to read the mouth first, which is why Western emoticons emphasize the mouth: :-) uses a parenthesis for a smile. π is one of the few emojis where both the eyes and the mouth are clearly expressive, which theoretically makes it more readable across both cultural frameworks. But "theoretically" didn't stop the GroupLens study from finding massive disagreement about what π means.
It was, according to science. A 2016 study by the University of Minnesota's GroupLens Lab found that π produced the widest sentiment gap of any emoji tested: 4.7 points across platforms. Fast Company called it 'the world's most confusing emoji.' The confusion has largely resolved since platform redesigns in 2016-2017.
After Apple redesigned π in iOS 10 (2016), some users launched Change.org petitions demanding the old ambiguous design back because they liked its versatility (using it for both awkwardness and happiness). Others had wanted the redesign because the old version was confusing. The emoji's identity crisis was polarizing enough to generate actual activism.
Popularity ranking
Search interest
Often confused with
This is the big one. Before Apple's iOS 10 redesign in September 2016, π and π¬ were nearly indistinguishable on iPhones. A University of Minnesota study found the sentiment gap between platforms was 4.7 points on a -5 to +5 scale. π is supposed to be happy. π¬ is supposed to be awkward. For six years, they looked like the same face.
This is the big one. Before Apple's iOS 10 redesign in September 2016, π and π¬ were nearly indistinguishable on iPhones. A University of Minnesota study found the sentiment gap between platforms was 4.7 points on a -5 to +5 scale. π is supposed to be happy. π¬ is supposed to be awkward. For six years, they looked like the same face.
π has wide open eyes (excited energy). π has crescent-shaped smiling eyes (warm energy). π looks surprised by how happy it is. π looks like it's been happy for a while and the joy reached the eyes. At small sizes, the difference between open and crescent eyes often disappears.
π has wide open eyes (excited energy). π has crescent-shaped smiling eyes (warm energy). π looks surprised by how happy it is. π looks like it's been happy for a while and the joy reached the eyes. At small sizes, the difference between open and crescent eyes often disappears.
π is happiness with smiling eyes. π¬ is discomfort with wide, nervous eyes. They were nearly indistinguishable on Apple devices before 2016, but now they're clearly different on all platforms. π reads as warm joy. π¬ reads as 'yikes' or 'this is awkward.'
Same mouth, different eyes. π has neutral eyes (generic happy). π has wide excited eyes (enthusiastic). π has crescent smiling eyes (warm, genuine). π has narrowed beaming eyes (intense joy). π has squinting eyes (laughing hard). At small sizes, most people can't tell them apart. π is the most searched. π is the least.
π's Mystery Spike: The Grinning Family Search Race
Do's and don'ts
- βUse it to add warmth to congratulations, greetings, and positive responses
- βUse it in group chats to keep the mood friendly without being over the top
- βUse it at work when you want to be friendly but not overly casual
- βUse it as your default happy face if you want something warmer than π
- βDon't use it sarcastically (it's too warm and genuine-looking to carry irony)
- βDon't confuse it with π¬ on older devices (the grimace confusion is mostly resolved but not completely gone)
- βDon't assume the smiling eyes mean flirtation (they mean warmth, not attraction)
- βDon't stack five of them (one π is warm, five πππππ is unsettling)
Caption ideas
Aesthetic sets
Type it as text
Fun facts
- β’The University of Minnesota GroupLens Lab found that π produced a sentiment gap of 4.7 points across platforms. 334 participants rated it. Apple users thought it was negative. Samsung and Google users thought it was positive. No other emoji came close to this level of disagreement.
- β’Apple's old design for π resembled π¬ (grimacing face) so closely that the Washington Post wrote about it in April 2016. The headline: "Why that emoji grin you sent might show up as a grimace."
- β’Users launched Change.org petitions both to bring back Apple's old design AND to demand a clearer design. The emoji's identity crisis had people fighting on both sides.
- β’Android Police celebrated Google's Android O redesign of π with the headline: "Google's grinning face with smiling eyes emoji no longer looks constipated."
- β’π was originally named "Smiling Face with Open Mouth and Smiling Eyes" in Unicode 6.0 (2010). That's 10 words to describe a face. The CLDR rename to "Grinning Face with Smiling Eyes" trimmed it to 5.
- β’According to emojitracker.com, π was the 15th most popular emoji on Twitter. It outlasted the grimace confusion and remained consistently used despite the identity crisis.
- β’The GroupLens study found that even within the SAME platform, users disagreed on emoji sentiment by an average of 1.88 points. Cross-platform, the gap widened to 2.04. Emoji communication is inherently noisy, and π was the noisiest signal of all.
- β’Only 4.5% of emoji tested had consistently low sentiment variance across all platforms. π was at the opposite extreme. The emoji keyboard is a minefield of potential miscommunication, and π was the biggest mine.
Common misinterpretations
- β’The grimace confusion (2010-2016): Apple's rendering of π looked so similar to π¬ that users couldn't tell if they were sending happiness or discomfort. This was documented by the University of Minnesota and covered by the Washington Post, NPR, and Fast Company. It's the most documented case of emoji misinterpretation in history.
- β’Some people still associate π with awkwardness or nervousness because they remember when it looked like a grimace. This residual confusion persists even though all platforms now render it as clearly happy.
- β’In Chinese digital culture, broad smiling faces can read as performed politeness rather than genuine warmth. An American user's friendly π might land as "smiling but not meaning it" to a Chinese recipient. The risk is lower with π than with π (which is subtler and more easily read as insincere), but it exists.
In pop culture
- β’Fast Company called π "the world's most confusing emoji" in 2016 based on the GroupLens study. It's one of the few emojis that got its own science-journalism news cycle.
- β’The grimace/grin confusion became a recurring topic in tech journalism. The Washington Post, NPR, Daily Dot, Live Science, and Inverse all covered it. An emoji that was supposed to mean "happy" got more press coverage than most product launches.
- β’π has a cat variant: πΈ Grinning Cat with Smiling Eyes. Same expression, feline packaging. The internet's fondness for cats extends even to emoji taxonomy.
- β’The Duchenne smile that π's crescent eyes mimic was named after Guillaume Duchenne de Boulogne, a 19th-century French neurologist who used electrical stimulation to map facial muscles. His 1862 book MΓ©canisme de la physionomie humaine included photographs of subjects whose facial muscles were stimulated with electrodes. Modern psychology still uses his framework: a genuine smile involves the orbicularis oculi (eye muscles), while a fake smile only uses the zygomaticus major (mouth muscles). π is the only grinning emoji that includes both.
- β’The grimace/grin confusion is the kind of fact that sounds fake but isn't. If you enjoy sorting real facts from AI-generated fakes, try Bluffpedia, where you guess which Wikipedia summaries are real and which are generated.
Trivia
For developers
- β’π is . Unicode name: SMILING FACE WITH OPEN MOUTH AND SMILING EYES. CLDR name: "grinning face with smiling eyes." Common shortcodes: (Slack, Discord, GitHub). Note the asymmetry: gives you π, gives you π. This trips up developers regularly.
- β’The grimace confusion affected automated sentiment analysis tools in 2010-2016. If your NLP pipeline assigns sentiment to emoji, verify that π maps to positive, not neutral or negative. Some older training data may have inherited the Apple-grimace interpretation.
- β’The five grinning faces (πππππ) occupy codepoints in the U+1F600-1F606 range. π is U+1F604. If you're building an emoji picker, consider user-testing whether people can distinguish these at your app's display size. Most can't below 24px.
Before iOS 10 (September 2016), Apple's rendering of π had clenched teeth and smiling eyes that looked nearly identical to π¬ (grimacing face). A University of Minnesota study found a 4.7-point sentiment gap: Apple users rated it negative, other platform users rated it positive. Apple fixed the design in 2016 and the confusion mostly resolved.
See the full Emoji Developer Tools guide for regex patterns, encoding helpers, and more.
What comes to mind when you see π?
Select all that apply
- Grinning Face with Smiling Eyes Emoji (emojipedia.org)
- Emoji miscommunication study (GroupLens/UMN) (grouplens.org)
- "Blissfully happy" or "ready to fight" (PDF) (grouplens.org)
- Why that emoji grin might show up as a grimace (Washington Post) (washingtonpost.com)
- Lost In Translation (NPR) (npr.org)
- The world's most confusing emoji (Fast Company) (fastcompany.com)
- Google's emoji no longer looks constipated (Android Police) (androidpolice.com)
- Grinning Face With Smiling Eyes (Dictionary.com) (dictionary.com)
- Change.org petition to bring back old design (change.org)
- Emoji perception across cultures (Pumble) (pumble.com)
- Duchenne smile (Wikipedia) (wikipedia.org)
- Emoji misunderstanding is more common than you think (Bustle) (bustle.com)
- Cross-Platform Emoji Interpretation (arXiv) (arxiv.org)
- Emoji Sentiment Ranking v1.0 (Novak et al.) (kt.ijs.si)
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