vendor bill
Compute and third-party AI services behind the company's own AI features
0.43% to 4.2% of the quarter’s revenue
Incremental total: counts in full.
Matched line moved : the whole line, not this channel.
our inferencedisclosure: described· motive: exploratory· before LLMs: new
The company's own AI spend is now described as a research program, with a second generation of its time-series model, dedicated and post-training models for Bits AI, and the Adaptive ML acquisition (claims c13, c38), paid through cloud operating expense and third-party AI services (claim c49). The R&D cloud infrastructure increase doubled as a share of the R&D increase and gross margin fell on third-party cloud spend; the filing attributes neither to AI, and the CFO holds the margin expectation unchanged. The size here is the ledger's own, , built as assumed AI shares of Cost of revenue and Research and development ; the bridge above shows the line movements it sits inside. The counterparty is mixed: cloud providers for training and inference capacity, and third-party AI service vendors.
Evidence: 9 quotes, 4 figures, 4 confounds, 3 from before coverage
What the company pays to train its own models and to run inference for its AI features, including third-party AI services the filing says it uses. It sits inside cloud infrastructure costs in Research and development and in Cost of revenue, which the filing does not split by purpose.
Why this motive
The spend is framed as AI research: dedicated models, post-training models for Bits AI, world models, and the Adaptive ML acquisition to accelerate that research (claims c12, c13, c38), the R&D framing tell. The features this research serves are shipped inside the platform, which would read product-defensive; the less durable motive is kept.
Before LLMs: new
The anchor names no bill for model training, inference or third-party AI services; the 10-K for 2024 says only that the company uses third-party AI services and that building AI into its products takes significant investment in infrastructure. The lines that would carry the cost were Research and development, in Q1 2024, and Cost of revenue, .
“We incorporate AI, including generative AI, into our products. These technologies are complex and rapidly evolving and building them requires significant investment in infrastructure and personnel with no assurance that we will realize the desired or anticipated benefits.”
“In addition, our business may be disrupted if any of the third-party AI services we use become unavailable due to extended outages or commercially unreasonable terms of service.”
“This increase was primarily due to an increase of $158.9 million in personnel costs including allocated overhead costs for our engineering, product and design teams as a result of increased headcount and an increase of $30.4 million in cloud infrastructure-related investments.”
Figures
- Non-GAAP gross margin · 2026-CQ2
- Non-GAAP gross margin, year-ago quarter · 2025-CQ2
- Hosting and software cost increase as a share of the Cost of revenue increase · 2026-CQ2
- Cloud infrastructure and software investment increase as a share of the Research and development increase · 2026-CQ2
Reported line it is matched to
The call describes larger models, post-training for Bits AI and an AI research acquisition (claims c13, c38). Research and development rose to , and the 10-Q names of cloud infrastructure and software-related investments inside that increase, of it, more than double last quarter's share, without saying what the infrastructure is for. Cost of revenue rose with of hosting and software cost, of the increase, and GAAP gross margin fell to from , which the filing attributes to increased third-party cloud spend and not to AI.
2026-CQ2: 2025-CQ2: 2026-CQ2: 2026-CQ2: 2026-CQ2: 2026-CQ2: 2025-CQ2: 2026-CQ2: 2026-CQ2: 2026-CQ2: 2025-CQ2:
What else could explain it
- line composition: Cloud infrastructure and software in Research and development hosts development and test environments as well as model training; the filing does not split it by purpose.
- bundling: Inference for AI features runs on the same third-party cloud that processes customer data inside Cost of revenue; the hosting increase there is explained by increased cloud spend generally, and the CFO's margin expectation is unchanged (claim c17).
- acquisition: Acquisitions in the half, including Adaptive ML, add research personnel and infrastructure to Research and development; their purchase prices sit outside the income statement and are not split out of the lines.
- other: Customer data volumes, including AI telemetry sold through the revenue channels, drive the Cost of revenue hosting line.
Quotes
“Third, next-gen AI introduces new complexity and observability challenges. We are addressing this with what we call Datadog for AI to observe and secure the AI stack from end to end. This includes GPU Monitoring, Agent Observability, Agent Console, Data Observability, AI Guard, and many other products. Finally, our AI research team and our large volume of rich data using critical workflows enable us to conduct groundbreaking research.”
“Now beyond Toto, we are working on larger and more ambitious dedicated models, post-training models to power Bits AI and bringing other modalities beyond time series data into world models that we think can lead to a step change in capabilities for our customers. We plan to accelerate these research efforts with the acquisitions of Adaptive ML, which will close in June.”
“For a gross margin of 79.6%. This compares to a gross margin of 80.2% last quarter, 80.9% in the year ago quarter. As we've discussed in the past, our gross margin varies from quarter to quarter, with investments into innovations for our customers offset by efficiency efforts. There's no change in our expectations for gross margin, which has been in the 80% ± range historically.”
“Acquired Adaptive ML, a frontier AI startup developing the world’s first Reinforcement Learning Operations platform, to accelerate Datadog AI Research’s investment in world models and agentic LLM post-training for observability—combining Datadog’s access to real-world infrastructure and security data with Adaptive ML’s expertise in building specialized, high-performance AI agents.”
“Cost of revenue increased by $74.1 million, or 45%, for the three months ended June 30, 2026 compared to the three months ended June 30, 2025. This increase was primarily due to an increase of $64.1 million in third-party cloud infrastructure hosting and software costs and an increase of $5.2 million in personnel costs including allocated overhead costs as a result of increased headcount.”
“Our gross margin decreased for the three months ended June 30, 2026 compared to the three months ended June 30, 2025, primarily as a result of increased spend with our third-party cloud infrastructure provider costs.”
“Research and development expense increased by $90.5 million, or 23%, for the three months ended June 30, 2026 compared to the three months ended June 30, 2025. This increase was primarily due to an increase of $62.5 million in personnel costs including allocated overhead costs for our engineering, product and design teams as a result of increased headcount and an increase of $28.2 million in cloud infrastructure and software-related investments.”
“We incorporate AI, including generative AI, into our products. These technologies are complex and rapidly evolving and building them requires significant investment in infrastructure and personnel with no assurance that we will realize the desired or anticipated benefits.”
“In addition, our business may be disrupted if any of the third-party AI services we use become unavailable due to extended outages or commercially unreasonable terms of service.”
By quarter
- Q1 2026bounded · our inference · exploratory · $4.3mn to $30mn
- Q2 2026described · our inference · exploratory · $4.8mn to $47mn