How popular isHarvard CS50?
In September 2026, people searched for Harvard CS50 by name about 107,000 times worldwide, an 11.3% increase from the previous year. These searches made up 2.5% of all global online coding platform searches, placing Harvard CS50 fifth out of eight platforms. When we asked both ChatGPT and Google AI Overviews about online coding platforms, Harvard CS50 appeared in three of the five answers and was the third most recommended of the eight.
Harvard CS50 is the fifth most searched of 8 competitors and the third most recommended in AI answers.
LeetCodeShare of searches 77.2%Mentioned in 2 of 5 AI answersPlace in AI recommendations 4th
freeCodeCampShare of searches 8.5%Mentioned in 5 of 5 AI answersPlace in AI recommendations 1st
DataCampShare of searches 4.6%Mentioned in 0 of 5 AI answersPlace in AI recommendations –
CodecademyShare of searches 3.8%Mentioned in 5 of 5 AI answersPlace in AI recommendations 2nd
Harvard CS50Share of searches 2.5%Mentioned in 3 of 5 AI answersPlace in AI recommendations 3rd
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Top online coding platforms in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, Harvard CS50 was mentioned in three out of five: in two of the three ChatGPT answers and in one of the two Google AI Overviews. Harvard CS50 is the third most recommended of the eight.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
- freeCodeCamp1st
- Codecademy2nd
- Harvard CS503rd
- LeetCode4th
The Odin Project5th
Scrimba6th
Exercism7th- DataCamp–
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- freeCodeCamp5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Codecademy5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Scrimba4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Harvard CS503 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- LeetCode2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- The Odin Project2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- Exercism1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- DataCamp0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about online coding platforms
5 answers
Asked ChatGPT
“Which online coding platform should I use?”
Asked ChatGPT
“What are the best online coding platforms?”
Asked ChatGPT
“What's the best online coding platform for learning to code?”
Searched Google, AI Overview
“online coding platforms”
Searched Google, AI Overview
“coding lessons online”
Not named in any answer:
Brands are shown in the order each answer named them. The survey took place in the United States on October 21, 2026.
Which online coding platforms compete with Harvard CS50?
Share of searches by month for LeetCode, freeCodeCamp, DataCamp, Codecademy, Harvard CS50. The figures are in the table below the chart.
View monthly share of searches table
| Month | LeetCode | freeCodeCamp | DataCamp | Codecademy | Harvard CS50 | Exercism | The Odin Project | Scrimba |
|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 63.7% | 8.6% | 7% | 12.8% | 2.7% | 2.1% | 1.7% | 1.4% |
| Nov 2025 | 63.5% | 8.5% | 8.5% | 12.8% | 2.3% | 1.7% | 1.4% | 1.1% |
| Dec 2025 | 67.2% | 9% | 6% | 11% | 2.5% | 1.5% | 1.5% | 1.2% |
| Jan 2026 | 68.1% | 9.2% | 5% | 11.2% | 2.5% | 1.5% | 1.5% | 1% |
| Feb 2026 | 66% | 8.9% | 5.9% | 13.3% | 2% | 1.8% | 1.2% | 0.98% |
| Mar 2026 | 65% | 10.7% | 4.8% | 13% | 2% | 2.1% | 1.4% | 0.96% |
| Apr 2026 | 67.6% | 11.1% | 6.1% | 7.4% | 2.8% | 2.2% | 1.5% | 1.2% |
| May 2026 | 68.3% | 11.2% | 6.1% | 6.1% | 3.3% | 1.8% | 1.8% | 1.2% |
| Jun 2026 | 72.9% | 9.8% | 5.4% | 4.4% | 2.9% | 2% | 1.6% | 1.1% |
| Jul 2026 | 77.4% | 8.5% | 3.8% | 3.8% | 2.5% | 1.7% | 1.4% | 0.94% |
| Aug 2026 | 76.6% | 8.4% | 4.6% | 3.8% | 2.6% | 1.7% | 1.4% | 0.93% |
| Sep 2026 | 77.2% | 8.5% | 4.6% | 3.8% | 2.5% | 1.4% | 1.1% | 0.93% |
| Rank | Brand | Share of searches | Estimated monthly branded searches | vs prior month | Share change |
|---|---|---|---|---|---|
| 1, held 1st | 77.2% | 3.4M | 0% | +0.6 points | |
| 2, held 2nd | 8.5% | 368K | 0% | +0.1 points | |
| 3, held 3rd | 4.6% | 201K | 0% | 0 points | |
| 4, held 4th | 3.8% | 165K | 0% | 0 points | |
| 5, held 5th | 2.5% | 107K | -6.5% | -0.2 points | |
| 6, held 6th | 1.4% | 60.5K | -18.2% | -0.3 points | |
| 7, held 7th | 1.1% | 49.5K | -18.2% | -0.2 points | |
| 8, held 8th | 0.93% | 40.5K | 0% | 0 points |
1.
LeetCode77.2%
Held 1st. 3.4M estimated branded searches, 0% vs prior month. Share +0.6 points.
8.5%
Held 2nd. 368K estimated branded searches, 0% vs prior month. Share +0.1 points.
3.
DataCamp4.6%
Held 3rd. 201K estimated branded searches, 0% vs prior month. Share 0 points.
3.8%
Held 4th. 165K estimated branded searches, 0% vs prior month. Share 0 points.
2.5%
Held 5th. 107K estimated branded searches, -6.5% vs prior month. Share -0.2 points.
6.
Exercism1.4%
Held 6th. 60.5K estimated branded searches, -18.2% vs prior month. Share -0.3 points.
1.1%
Held 7th. 49.5K estimated branded searches, -18.2% vs prior month. Share -0.2 points.
8.
Scrimba0.93%
Held 8th. 40.5K estimated branded searches, 0% vs prior month. Share 0 points.
Compare popularity between Harvard CS50 and its closest rivals
Every comparison with Harvard CS50
7 comparisons
How has branded search demand for Harvard CS50 changed worldwide over the last 12 months?
2 findings
- Across the 12 months ending September 2026, estimated monthly branded searches for Harvard CS50 worldwide rose from 96.2K to 107K.
- Across the 12 months ending September 2026, Harvard CS50’s share of searches among online coding platforms worldwide peaked at 3.3% in May 2026 and was lowest at 2% in March 2026.
How did search popularity change for online coding platforms worldwide in September 2026?
6 changes
In September 2026, LeetCode gained share of searches among online coding platforms worldwide, from 76.6% to 77.2%.
Exercism’s share of searches among online coding platforms worldwide has lost ground for 3 months in a row, from 2% to 1.4% in September 2026.
Estimated monthly branded searches for freeCodeCamp worldwide rose 22.3% over 12 measured months, from 301K to 368K in September 2026.
Estimated monthly branded searches for Harvard CS50 worldwide rose 11.3% over 12 measured months, from 96.2K to 107K in September 2026.
Estimated monthly branded searches for Codecademy worldwide fell 63.3% over 12 measured months, from 450K to 165K in September 2026.
Estimated monthly branded searches for DataCamp worldwide fell 18.3% over 12 measured months, from 246K to 201K in September 2026.
How are Harvard CS50’s branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using Harvard CS50’s name. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brand is growing, holding steady, or fading.
- cs50
- harvard cs50
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