Starbucks Chai Latte has more caffeine than Tazo chai (brewed) on both counts: 95mg per 16 oz grande against 47mg per 8 oz cup, and about 6mg per fluid ounce against 6. The serving sizes differ, so the table below shows both ways of counting.
Tazo chai (brewed) vs Starbucks Chai Latte: the numbers
| Tazo chai (brewed) | Starbucks Chai Latte | |
|---|---|---|
| Caffeine per serving | 47mg per 8 oz cup | 95mg per 16 oz grande |
| Caffeine per fl oz | 5.9mg | 5.9mg |
| Servings to reach 400mg (FDA context) | 8.5 | 4.2 |
Sources: Tazo chai (brewed)'s figure is verified in our Tazo chai (brewed) caffeine guide against Caffeine Informer (source); Starbucks Chai Latte's figure is verified in our Starbucks Chai Latte guide against Starbucks nutrition listing (source).
Which one should you pick?
Pick Tazo chai (brewed) when you want the lighter dose or a slower ramp, and Starbucks Chai Latte when you actually need the bigger hit and know your tolerance. If you are stacking either with other caffeinated drinks through the day, run the math against the 400mg reference rather than guessing.
For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. Tolerance and health vary, so treat these numbers as information, not advice.
Related reading
- Tazo chai (brewed): the full caffeine guide
- Starbucks Chai Latte: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
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Gear from this guide
FAQ
Does Tazo chai (brewed) or Starbucks Chai Latte have more caffeine? Starbucks Chai Latte: 95mg per 16 oz grande versus 47mg per 8 oz cup for Tazo chai (brewed).
Which is stronger per ounce? Starbucks Chai Latte, at about 5.9mg per fluid ounce versus 5.9mg for Tazo chai (brewed).
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