Sphinx of black quartz, judge my vow.
The quick brown fox jumps over the lazy dog. 0123456789
Weights:
400 600
CSS
font-family: 'optimisticAI', sans-serif;muse.ai/
muse.ai
13 fonts found
Muse — Your Personal AI Agent from Meta
Try Muse, your personal AI agent that gets things done. Give Muse a goal or an everyday task and it handles the rest, from finances and health to shopping and the people you care about.
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What fonts does Muse use?
Muse.ai uses optimisticAI, Optimistic AI Text, hatchLetterCaveat, optimisticMono and optimisticText as its main typefaces. Arial, Roboto, helvetica-neue and Segoe UI are declared as fallbacks. 13 fonts detected, last checked Nov 7, 2026.
Muse.ai is an innovative platform that empowers users to streamline everyday tasks with the help of its AI agent. The use of primary fonts like optimisticAI and optimisticText gives the brand a distinctive character, suggesting a friendly yet capable interface. Additionally, fonts such as hatchLetterCaveat and optimisticMono enhance the overall user experience by providing clarity and focus, aligning with Muse's goal of making personal assistance intuitive and efficient.
Sphinx of black quartz, judge my vow.
The quick brown fox jumps over the lazy dog. 0123456789
Weights:
400italic
CSS
font-family: 'Optimistic AI Text', sans-serif;Sphinx of black quartz, judge my vow.
The quick brown fox jumps over the lazy dog. 0123456789
Weights:
300
CSS
font-family: 'optimisticText', sans-serif;Sphinx of black quartz, judge my vow.
The quick brown fox jumps over the lazy dog. 0123456789
Weights:
400 700
CSS
font-family: 'hatchLetterCaveat', sans-serif;Sphinx of black quartz, judge my vow.
The quick brown fox jumps over the lazy dog. 0123456789
Weights:
300 800
CSS
font-family: 'optimisticMono', sans-serif;Fallback fonts
These fonts are listed in the CSS as backups. The browser only falls back to them if the main fonts above fail to load.
Font stacks
The cascading font order declared in CSS. Browsers try each font left-to-right until one is available.
Legend:AaCustom font (primary)AaSystem fontkwCSS keyword (generic)
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Frequently asked questions about Muse.ai's fonts
What fonts does Muse.ai use?
Muse.ai uses optimisticAI, Optimistic AI Text, hatchLetterCaveat, optimisticMono and optimisticText as its main typefaces. Arial, Roboto, helvetica-neue and Segoe UI are declared as fallbacks. 13 fonts detected, last checked Nov 7, 2026.
What fonts are used on muse.ai?
Muse.ai primarily uses custom fonts including optimisticAI, optimisticText, optimisticMono, and hatchLetterCaveat, providing a unique visual identity.
Where can I find the fonts used on muse.ai?
The primary fonts used on muse.ai, like optimisticAI and optimisticText, are custom creations and not available for public download. Look for similar styles in popular font libraries.
How do the fonts on muse.ai compare to standard fonts?
Fonts like optimisticAI and optimisticMono are designed specifically for Muse, offering a tailored experience that standard fonts like Arial or Roboto may not provide.
What styles and weights are available for the fonts on muse.ai?
Muse.ai utilizes various weights for its custom fonts, including 400 and 600 for optimisticAI, 300 for optimisticText, and 300 to 800 for optimisticMono, enhancing versatility.
Why does muse.ai use custom fonts?
Custom fonts like hatchLetterCaveat and optimisticAI help muse.ai establish a unique brand identity while ensuring readability and user engagement across its platform.