CoreWeave vs Together AI: who uses which
Customers, public proof and the companies that use both.
On usedby, 18 companies use CoreWeave and 31 use Together AI. 1 company uses both, including OpenAI. Together AI leads among the Artificial Intelligence companies on usedby that use either tool.Latest check Oct 7, 2026: 46 of 49 public lines checked. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side.
Who uses CoreWeave, Together AI, or both
Every company with a public proof for at least one of the two tools.
17
use only CoreWeave
1
company uses both
30
use only Together AI
17 companies use only CoreWeave, 30 use only Together AI and 1 uses both, out of the 48 companies on usedby that use at least one of them.
Where it lands
Newest customers
No new customer since tracking started on October 7, 2026.
Where it lands
Newest customers
We have not started tracking changes for Together AI yet.
Who uses both
Companies with a confirmed or observed line on both tools.
| Company |
|---|
 OpenAI |
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
CoreWeave
Together AIWhat customers report
Results as the vendor or the customer published them, with the source and the date.
CoreWeave
The team went from POC to production in three weeks.
Mercado Libre
Vendor case study, wf.coreweave.com, published Jul 2, 2026
saving 75% in cloud costs
NovelAI
Vendor case study, wf.coreweave.com, published Oct 6, 2026
Together AI
70% cost reduction for customers switching to open-source models on Together GPUs
Runware
Vendor case study, together.ai, captured Oct 3, 2026
3–4 months of cumulative research time recovered
Scaled Cognition
Vendor case study, together.ai, captured Oct 3, 2026
Questions about CoreWeave and Together AI
Which is used more, CoreWeave or Together AI?
Together AI has more customers on usedby: 31 against 18 for CoreWeave.
Do companies use both CoreWeave and Together AI?
Yes. 1 company uses both on usedby, including OpenAI.
Who uses CoreWeave?
18 companies on usedby, each with the public page that shows it. See who uses CoreWeave.
Who uses Together AI?
31 companies on usedby, each with the public page that shows it. See who uses Together AI.
How does usedby count customers?
A company counts when a public page shows it: a vendor's customer page, a case study, a press release or a job post, most saved with a dated capture. Every line is a customer, at one of three proof levels: confirmed, observed or signal (a job post, the weakest). A company is named as using both tools when its lines on both are confirmed or observed.