Stack Overflow Revenue: $115M Audited, $125M Claimed on Stage

How much revenue does Stack Overflow make? The audited answer: $115 million for the fiscal year ended March 31, 2025, up 17% in local currency, according to the annual report of its owner, Prosus. The on-stage answer is bigger. Interviewed at Nathan Latka's SaaSOpen conference in March 2024, CEO Prashanth Chandrasekar said revenue was "certainly over $100 million" and, pressed on whether $125 million was fair, eventually let it stand. Prosus's audited figure for the fiscal year that closed three days after that conference: $98 million.

Both numbers are real quotes from real sources, and they do not agree. This page lays out the dated record, keeps the two apart, and shows where the money actually comes from: a SaaS product (Stack Overflow for Teams), a legacy ads business, and, since February 2024, licensing deals with the AI companies that are simultaneously draining the site's traffic.

Stack Overflow revenue, year by year

Stack Overflow is private, but since Prosus bought it in 2021 its revenue has appeared in Prosus's audited accounts. Prosus reports on a fiscal year ending March 31, which is why the rows below do not line up with calendar years.

Prosus also disclosed operating losses: adjusted EBIT of -$57M in FY2024, improving to -$22M in FY2025, which Prosus described as cash-flow breakeven.

$125 million on stage vs $98 million audited

The exchange on the Latka tape is worth quoting, because the hedging is the story. Interviewer Andrew Warner pushed: over $150 million? "Can't say that." Over $125 million? "Wow, that's backing me into a corner. It's certainly over $100 million." Warner tried once more – fair to say over $125 million? – and got a "maybe, maybe" followed by "yes, yes."

Prosus's books say the company recognized $98 million in the twelve months ending March 31, 2024 – the fiscal year that closed the same week Chandrasekar was on stage. A $125 million claim and a $98 million audited figure can both be honest if the larger number is a forward run-rate, bookings, or ARR rather than recognized revenue, but nobody on the tape specified which, and Prosus's audited figure is the one that survives scrutiny. Treat $98 million as the truth for that year and $115 million as the truth for the year after.

A note on our own records: the GetLatka database entry for Stack Overflow carries $125M for 2024, taken from that on-stage concession, alongside an $89M figure for December 2022 (via the Unpacked newsletter) that sits consistently next to Prosus's $94M for the fiscal year ended March 2023. An earlier version of this article went further and called the $125 million "ARR." That was wrong twice over: it is not audited revenue, and it cannot be ARR either, because Chandrasekar said on the same tape that only about 70% of revenue was recurring.

Where the revenue comes from

For its first eleven years Stack Overflow made money from ads and job listings on its public Q&A network. Chandrasekar, named CEO in September 2019, told the SaaSOpen audience that recurring revenue was essentially zero when he arrived and that the pandemic – which gutted both ad spend and hiring – forced the pivot: by March 2024, roughly 60% of revenue came from the SaaS product and close to 70% of total revenue was recurring.

The SaaS product is Stack Overflow for Teams: a private, internal version of the public site. It started in late 2018 when large companies asked for exactly that – "Microsoft was customer number one," Chandrasekar said – and by March 2024 he counted 15,000 customers, with Siemens and Bloomberg among the named accounts. The enterprise tier runs about $18 to $19 per seat per month, per the tape. Sales cycles: nine to twelve months for the largest strategic accounts, around six months for enterprise, one to three months for SMB deals.

Does the arithmetic close? Only against the audited number. Take FY2024's $98 million and the tape's 60% SaaS mix: about $59 million of SaaS revenue across 15,000 customers is roughly $3,900 per customer per year – plausible for a base that spans small teams up to strategic accounts a 2022 slide shown at the conference put near $250,000 a year. The $8.3K average ACV on our database page is derived from the $125M on-stage figure, not an independent data point. Against $125 million, the same math needs a SaaS base half again as large as the audited accounts support.

The AI licensing leg

The newest revenue line is OverflowAPI, Stack Overflow's program for licensing its 60-million-question corpus to AI companies. Google was first: a strategic partnership with Google Cloud announced February 29, 2024, feeding Stack Overflow content into Gemini with attribution and links back. On the Latka tape a month later, asked whether an OpenAI deal was coming, Chandrasekar said "can't comment on it yet" – then, asked if it was a possibility, "absolutely." Six weeks later, on May 6, 2024, OpenAI and Stack Overflow announced their partnership: OpenAI trains on the public dataset via OverflowAPI, and Stack Overflow builds its OverflowAI features on OpenAI models.

These deals are already load-bearing. Prosus attributed FY2025's 17% revenue growth to "API partnerships, cost controls and new offerings like OverflowAPI for AI/LLM providers." Chandrasekar's stated logic on the tape: an internal survey of 100,000 users found 70% wanted to use AI tools for development but only about 40% trusted model output – so Stack Overflow's role is to be the trusted, human-validated layer AI companies pay for, rather than the site they scrape for free.

The risk under the revenue

The uncomfortable context for every number above is that the community generating the licensed asset is shrinking fast. Analyses of Stack Exchange's public data, reported by DevClass in January 2026, put new questions on Stack Overflow at 3,862 in December 2025 – down 78% year over year, against a 2014 peak of roughly 200,000 questions a month. Developers ask ChatGPT, Claude, and Copilot first.

Prosus has priced that risk into its own accounts: it paid $1.8 billion for Stack Overflow in 2021, then took a $372 million goodwill impairment in its FY2024 accounts related primarily to Stack Overflow, citing a decline in business performance. One more discrepancy worth flagging: on the tape Chandrasekar described "about 100 million people that show up every day"; Prosus's own 2021 acquisition release said 100 million people per month. The monthly figure is the one every other public source uses.

So the concrete answer to "what is Stack Overflow's revenue" is $115 million and growing again – but it is a smaller company than its CEO's stage numbers suggested, carrying an owner's write-down, and betting that AI licensing plus Teams subscriptions can outrun the decline of the public site that made both possible. For how the SaaS pivot itself was executed, see our companion piece on how Stack Overflow built the Teams business; for the tracked figures, the Stack Overflow company page.