# Who uses C3 AI? 35 companies use C3 AI on usedby: 23 confirmed, 12 observed and 0 signals. 6% of them are in Aerospace & Defense. Confirmed or observed customers include Department of Defense, Shell and US Air Force. Latest check 2026-10-08: 35 of 35 companies checked, from 8 public sources. > Agentic AI platform and prebuilt enterprise AI applications for industry, energy, defense and government. - Category: [Enterprise AI Platforms](https://www.usedby.ai/tools/category/enterprise-ai-platforms.md) - Website: [c3.ai](https://c3.ai/) ## Customers Every line is a customer, at one of three proof levels: confirmed (a case study, a named quote or a press release), observed (the vendor shows the company on its own pages) or signal (a job post shows the company's employees use the tool, the weakest proof). The first public proof is the first public page we found, not an adoption date. | Company | Industry | Proof | First public proof | Source | |---|---|---|---|---| | [Department of Defense](https://www.usedby.ai/companies/department-of-defense.md) | Aerospace & Defense | Observed | — | [c3.ai](https://c3.ai/customers), captured 2026-10-08 | | [Shell](https://www.usedby.ai/companies/shell.md) | Energy, Utilities & Cleantech | Confirmed | — | [c3.ai](https://c3.ai/customers/shell), captured 2026-10-08 | | [US Air Force](https://www.usedby.ai/companies/us-air-force.md) | Aerospace & Defense | Confirmed | — | [c3.ai](https://c3.ai/customers/ai-for-aircraft-readiness), captured 2026-10-08 | | [NATO](https://www.usedby.ai/companies/nato.md) | Government & GovTech | Observed | — | [c3.ai](https://c3.ai/), captured 2026-10-08 | | [Johnson Controls](https://www.usedby.ai/companies/johnson-controls.md) | Energy, Utilities & Cleantech | Confirmed | — | [c3.ai](https://c3.ai/testimonials), captured 2026-10-08 | | [GSK](https://www.usedby.ai/companies/gsk.md) | Biotech & Pharma | Observed | — | [c3.ai](https://c3.ai/), captured 2026-10-08 | | [Cemex](https://www.usedby.ai/companies/cemex.md) | Construction | Confirmed | — | [c3.ai](https://c3.ai/testimonials), captured 2026-10-08 | | [Arcfield](https://www.usedby.ai/companies/arcfield.md) | — | Confirmed | — | [c3.ai](https://c3.ai/testimonials), captured 2026-10-08 | | [BAE Systems](https://www.usedby.ai/companies/bae-systems.md) | — | Confirmed | — | [c3.ai](https://c3.ai/testimonials), captured 2026-10-08 | | [Baker Hughes](https://www.usedby.ai/companies/baker-hughes.md) | — | Confirmed | — | [c3.ai](https://c3.ai/customers/baker-hughes-achieves-bottom-line-savings-with-ai-sourcing-optimization), captured 2026-10-08 | | [Bloom Energy](https://www.usedby.ai/companies/bloom-energy.md) | — | Confirmed | — | [c3.ai](https://c3.ai/testimonials), captured 2026-10-08 | | [BNY](https://www.usedby.ai/companies/bny.md) | — | Confirmed | — | [c3.ai](https://c3.ai/testimonials), captured 2026-10-08 | | [CAE](https://www.usedby.ai/companies/cae.md) | — | Confirmed | — | [c3.ai](https://c3.ai/testimonials), captured 2026-10-08 | | [Con Edison](https://www.usedby.ai/companies/con-edison.md) | — | Confirmed | — | [c3.ai](https://c3.ai/customers), captured 2026-10-08 | | [Dow](https://www.usedby.ai/companies/dow.md) | — | Confirmed | — | [c3.ai](https://c3.ai/testimonials), captured 2026-10-08 | | [Fleet Health](https://www.usedby.ai/companies/fleet-health.md) | — | Confirmed | — | [c3.ai](https://c3.ai/testimonials), captured 2026-10-08 | | [Holcim](https://www.usedby.ai/companies/holcim.md) | — | Confirmed | — | [c3.ai](https://c3.ai/testimonials), captured 2026-10-08 | | [Missile Defense Agency](https://www.usedby.ai/companies/missile-defense-agency.md) | — | Confirmed | — | [c3.ai](https://c3.ai/customers/enterprise-ai-for-missile-defense-modeling-and-simulation), captured 2026-10-08 | | [Nucor](https://www.usedby.ai/companies/nucor.md) | — | Confirmed | — | [c3.ai](https://c3.ai/testimonials), captured 2026-10-08 | | [Pantaleon](https://www.usedby.ai/companies/pantaleon.md) | — | Confirmed | — | [c3.ai](https://c3.ai/testimonials), captured 2026-10-08 | | [Seattle Department of Transportation](https://www.usedby.ai/companies/seattle-department-of-transportation.md) | — | Confirmed | — | [c3.ai](https://c3.ai/customers), captured 2026-10-08 | | [Siemens Energy](https://www.usedby.ai/companies/siemens-energy.md) | — | Confirmed | — | [c3.ai](https://c3.ai/testimonials), captured 2026-10-08 | | [Smith+Nephew](https://www.usedby.ai/companies/smith-nephew.md) | — | Confirmed | — | [c3.ai](https://c3.ai/testimonials), captured 2026-10-08 | | [SmithRx](https://www.usedby.ai/companies/smithrx.md) | — | Confirmed | — | [c3.ai](https://c3.ai/testimonials), captured 2026-10-08 | | [Squarcle](https://www.usedby.ai/companies/squarcle.md) | — | Confirmed | — | [c3.ai](https://c3.ai/testimonials), captured 2026-10-08 | | [SWIFT](https://www.usedby.ai/companies/swift.md) | — | Confirmed | — | [c3.ai](https://c3.ai/testimonials), captured 2026-10-08 | | [Amrize](https://www.usedby.ai/companies/amrize.md) | — | Observed | — | [c3.ai](https://c3.ai/), captured 2026-10-08 | | [Austal](https://www.usedby.ai/companies/austal.md) | — | Observed | — | [c3.ai](https://c3.ai/), captured 2026-10-08 | | [Duke Energy](https://www.usedby.ai/companies/duke-energy.md) | — | Observed | — | [c3.ai](https://c3.ai/), captured 2026-10-08 | | [HII](https://www.usedby.ai/companies/hii.md) | — | Observed | — | [c3.ai](https://c3.ai/), captured 2026-10-08 | | [Koch](https://www.usedby.ai/companies/koch.md) | — | Observed | — | [c3.ai](https://c3.ai/), captured 2026-10-08 | | [Qemetica](https://www.usedby.ai/companies/qemetica.md) | — | Observed | — | [c3.ai](https://c3.ai/), captured 2026-10-08 | | [Seaspan](https://www.usedby.ai/companies/seaspan.md) | — | Observed | — | [c3.ai](https://c3.ai/), captured 2026-10-08 | | [U.S. Army](https://www.usedby.ai/companies/u-s-army.md) | — | Observed | — | [c3.ai](https://c3.ai/), captured 2026-10-08 | | [US Steel](https://www.usedby.ai/companies/us-steel.md) | — | Observed | — | [c3.ai](https://c3.ai/), captured 2026-10-08 | ## Published results Reviewed stories only. A figure is the vendor’s or the customer’s claim, quoted with its label; usedby did not measure it. - [Missile Defense Agency](https://www.usedby.ai/case-studies/missile-defense-agency-c3-ai.md): **1000x** increase in the available threat data for a given (Vendor case study, captured by usedby 2026-10-08) ## Before you buy usedby has not verified C3 AI’s pricing, security or data terms yet. ## Alternatives - [Writer](https://www.usedby.ai/tools/writer.md): 74 public customers. Compare: https://www.usedby.ai/compare/c3-ai-vs-writer.md - [Kore.ai](https://www.usedby.ai/tools/kore-ai.md): 36 public customers. Compare: https://www.usedby.ai/compare/c3-ai-vs-kore-ai.md - [Palantir AIP](https://www.usedby.ai/tools/palantir-aip.md): 28 public customers. Compare: https://www.usedby.ai/compare/c3-ai-vs-palantir-aip.md - [Uniphore](https://www.usedby.ai/tools/uniphore.md): 22 public customers. Compare: https://www.usedby.ai/compare/c3-ai-vs-uniphore.md - [Dataiku](https://www.usedby.ai/tools/dataiku.md): 21 public customers. Compare: https://www.usedby.ai/compare/c3-ai-vs-dataiku.md More: https://www.usedby.ai/alternatives/c3-ai.md --- Source: https://www.usedby.ai/tools/c3-ai · How we check: https://www.usedby.ai/methodology