In late 2024, Anthropic's annualized revenue was approximately $1 billion. By the end of 2025, it had reached $9 billion. On February 12, 2026, the company disclosed a run rate of $14 billion. By the end of February — roughly two weeks later — the figure had climbed past $19 billion. [1] No software company in history has added $5 billion in annualized revenue in a single month. The number is not contested. What it means is the subject of increasingly loud disagreement.

Bloomberg reported the milestone on March 3, noting that Anthropic's revenue surge was occurring against the backdrop of a public dispute with the Pentagon over military applications of its Claude AI model. [2] CNBC's Kate Rooney confirmed the figure on March 4. [3] The Information reported the same week that OpenAI's annualized revenue had topped $25 billion, placing the gap between the two companies at roughly $6 billion — down from an estimated $19 billion gap just fourteen months earlier. [4]

The Claude Code Factor

The engine behind Anthropic's acceleration has a specific name: Claude Code. The company's coding assistant, launched in late 2025, reached $2.5 billion in annualized revenue by early March 2026. [5] That single product line, which did not exist eighteen months ago, now generates more revenue than most publicly traded software companies.

Axios reported on March 18 that Anthropic is capturing 73 percent of all spending among companies purchasing AI tools for the first time, according to corporate card data from Ramp. [6] The figure suggests that while OpenAI retains its incumbent install base, Anthropic is winning the marginal customer — the enterprise that had been evaluating both and has now decided. Claude's 70 percent share of the US enterprise coding-assistant market, per data cited by Reddit's r/Anthropic community, reinforces the pattern. [7]

The growth rate is structurally different from OpenAI's trajectory. Since each company crossed $1 billion in annual revenue, Anthropic has grown at approximately 10x per year versus OpenAI's 3.4x. [8] OpenAI had the advantage of ChatGPT's consumer virality. Anthropic's revenue is overwhelmingly enterprise and developer — stickier, higher-margin, and less susceptible to the churn that follows hype cycles.

The Hallucination Objection

Reuters published a Breakingviews column on March 10 titled "Anthropic gives lesson in AI revenue hallucination." [9] The argument was not that the revenue was fabricated but that annualized run rates, in a market growing this fast, are a poor proxy for sustainable business performance. On February 12, Anthropic claimed a $14 billion run rate. By month's end, the figure was $19 billion. The February revenue, annualized, would imply roughly $1.6 billion was generated in a single month — plausible for an enterprise software company with Anthropic's contract sizes, but also the kind of number that can be inflated by large one-time enterprise deals that do not recur at the same rate.

The objection has merit as accounting caution. It has less force as competitive analysis. Even if Anthropic's true sustainable run rate is closer to $15 billion than $19 billion, the trajectory is unmistakable: a company that was generating $1 billion fourteen months ago is now generating somewhere between $15 billion and $19 billion. The precise number matters less than the slope.

The Race Tightens

Anthropic's most optimistic internal projections, reported by Yahoo Finance in January, see revenue reaching $55 billion in 2027 and $148 billion by 2029. [10] These numbers assume the current growth rate is approximately sustainable — an assumption that has been correct for three consecutive quarters and may not be correct for three more. OpenAI, for its part, is not standing still: its $25 billion run rate includes revenue from a broader product portfolio (ChatGPT, DALL-E, API, enterprise), and the company is raising capital at a $300 billion valuation.

What has changed is the narrative. Twelve months ago, the AI revenue conversation was about OpenAI's dominance and everyone else's distance from it. Today, the conversation is about whether Anthropic will overtake OpenAI's revenue before the end of 2026. Manifold Markets, the prediction platform, currently prices this outcome at roughly even odds. [11] The race that was supposed to be settled is instead accelerating.