List of OpenAI GPT-5 Customers
San Francisco, 94158, CA,
United States
Since 2010, our global team of researchers has been studying OpenAI GPT-5 customers around the world, aggregating massive amounts of data points that form the basis of our forecast assumptions and perhaps the rise and fall of certain vendors and their products on a quarterly basis.
Each quarter our research team identifies companies that have purchased OpenAI GPT-5 for Generative AI Platforms from public (Press Releases, Customer References, Testimonials, Case Studies and Success Stories) and proprietary sources, including the customer size, industry, location, implementation status, partner involvement, LOB Key Stakeholders and related IT decision-makers contact details.
Companies using OpenAI GPT-5 for Generative AI Platforms include: Amgen, a United States based Life Sciences organisation with 28000 employees and revenues of $33.42 billion, Cursor, a United States based Professional Services organisation with 150 employees and revenues of $500.0 million, APPS RUN THE WORLD, a United States based Professional Services organisation with 100 employees and revenues of $5.0 million and many others.
Contact us if you need a completed and verified list of companies using OpenAI GPT-5, including the breakdown by industry (21 Verticals), Geography (Region, Country, State, City), Company Size (Revenue, Employees, Asset) and related IT Decision Makers, Key Stakeholders, business and technology executives responsible for the software purchases.
The OpenAI GPT-5 customer wins are being incorporated in our Enterprise Applications Buyer Insight and Technographics Customer Database which has over 100 data fields that detail company usage of software systems and their digital transformation initiatives. Apps Run The World wants to become your No. 1 technographic data source!
Apply Filters For Customers
| Logo | Customer | Industry | Empl. | Revenue | Country | Vendor | Application | Category | When | SI | Insight |
|---|---|---|---|---|---|---|---|---|---|---|---|
 |
Amgen | Life Sciences | 28000 | $33.4B | United States | OpenAI | OpenAI GPT-5 | Generative AI Platforms | 2025 | n/a |
In 2025, Amgen deployed OpenAI GPT-5 across select internal workflows to evaluate and operationalize advanced generative AI capabilities. OpenAI GPT-5 is categorized as Generative AI Platforms and was introduced to Amgen via the vendor release that included API and ChatGPT business access, enabling both embedded API use and conversational workbench adoption for employees.
Implementation focused on leveraging GPT-5 core capabilities such as enhanced reasoning, agent orchestration, context recognition, and structured output generation to support tasks where scientific accuracy and contextual nuance are critical. Amgen performed an internal evaluation led by its AI and data leadership which concluded that GPT-5 met the companys bar for scientific accuracy and quality, with early deployments showing improved navigation of ambiguous context and faster response performance compared to prior models.
Operational scope targeted science and data oriented workflows including research support, data science augmentation, knowledge synthesis, and technical drafting where high fidelity outputs are required. OpenAI GPT-5 was used through the OpenAI API and business ChatGPT layers to integrate model-driven responses into analyst and scientist workflows, supporting both ad hoc conversational use and programmatic automation consistent with Generative AI Platforms capabilities.
Governance and rollout were coordinated under Amgens AI and data organization with phased adoption and internal quality review to validate scientific accuracy and reliability. Early results reported by Amgen included increased accuracy and reliability, higher quality outputs, and faster speeds relative to previous models, and these qualitative outcomes guided subsequent expansion of GPT-5 usage across additional internal workflows.
|
 |
APPS RUN THE WORLD | Professional Services | 100 | $5M | United States | OpenAI | OpenAI GPT-5 | Generative AI Platforms | 2023 | n/a |
In 2023, Tamiami Airport Business Association implemented OpenAI GPT-5 in the Generative AI Platforms category to enable natural language to SQL conversion for internal data querying and reporting. OpenAI GPT-5 is used to translate plain language questions from staff into SQL statements that support operational reporting and ad hoc analytics.
The deployment is architected around cloud API calls to OpenAI GPT-5 orchestrated by lightweight internal middleware, with prompt engineering, input sanitization, and statement generation centralized as core functional capabilities. Generated SQL is produced as a consumable artifact for analysts and system owners, with the middleware handling query templating and interaction logging for traceability.
Operational coverage targets the organization’s small staff and volunteer analytics workflows, integrating the natural language to SQL capability into existing data request and reporting processes. Governance and process changes include role based access to the NLP interface, mandatory human review of generated SQL before execution, and retention of request and response logs to support auditability and troubleshooting.
|
 |
Cursor | Professional Services | 150 | $500M | United States | OpenAI | OpenAI GPT-5 | Generative AI Platforms | 2025 | n/a |
In 2025, Cursor implemented OpenAI GPT-5 under the Generative AI Platforms category. Cursor trained OpenAI GPT-5 on real-world coding tasks in collaboration with early testers across startups and enterprises, using those test signals to guide configuration and model steering decisions.
OpenAI GPT-5 was configured to prioritize code generation and tool calling reliability, with steerability and personality tuning applied during the early tester program. Cursor described the model as "the smartest model [they’ve] used" and "remarkably intelligent, easy to steer, and even has a personality [they] haven’t seen in other models," reflecting fine-tuning and prompt engineering work to shape behavior for developer assistance.
The deployment was delivered as a cloud-hosted API integrated into developer workflows such as in-editor assistance, code review automation and continuous integration gate checks, concentrating operational coverage on engineering and product teams. Vercel characterized OpenAI GPT-5 as "the best frontend AI model, hitting top performance across both the aesthetic sense and the code quality, putting it in a category of its own," indicating a specific strength in frontend code generation and review scenarios.
Evaluation and governance incorporated external benchmark feedback from early testers, Windsurf reported OpenAI GPT-5 is SOTA on their evals and has "half the tool calling error rate over other frontier models," which guided iterative tuning and rollout sequencing. Rollout was staged through iterative tester feedback loops and model steering controls, aligning model usage with developer workflows and prompting guidelines to manage behavior and consistency for production engineering use.
|
Buyer Intent: Companies Evaluating OpenAI GPT-5
Discover Software Buyers actively Evaluating Enterprise Applications
| Logo | Company | Industry | Employees | Revenue | Country | Evaluated | ||
|---|---|---|---|---|---|---|---|---|
| No data found | ||||||||