# What AI does Paper Instruments use?

Paper Instruments uses 2 AI tools on usedby: 1 confirmed, 1 observed and 0 signals. Tools: Fireworks AI and E2B. Latest check 2026-11-01: 2 of 2 public lines checked.

- Website: [paperinstruments.com](https://paperinstruments.com)
- Public sources: 4

## AI tools

Each line links to the public page that shows the company with the tool. Every line is a customer, at one of three proof levels: confirmed (a case study, a named quote, a press release, or the company's own public account of using the tool (its own site, or a post by one of its executives, VP or above)), 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). A line the company declared to usedby itself, or that it lists as a sub-processor on its own legal page, is marked declared. The first public proof is not an adoption date. Relationship labels describe the source's scope. They do not establish current contract, spend or company-wide deployment. The claim permalink identifies the usedby record; the primary source supports the relationship. These two links provide attribution for a summary. Evidence is selected, not exhaustive; missing evidence or a public archive does not establish that none exists. Relationship-level dates are not verified publication dates of the selected source.

| Tool | Category | Proof | First public proof | Source | Relationship | Claim |
|---|---|---|---|---|---|---|
| [Fireworks AI](https://www.usedby.ai/tools/fireworks-ai.md) | AI inference & GPU cloud | Confirmed | — | [fireworks.ai](https://fireworks.ai/customers/paper-instruments-trains-a-frontier-level-model-for-knowledge-work-at-98-percent-lower-cost), captured 2026-10-31 | Usage described by a public source | [Paper Instruments · Fireworks AI claim](https://www.usedby.ai/claims/cmvwpumc20034v20dxxsc6lar) |
| [E2B](https://www.usedby.ai/tools/e2b.md) | Agent frameworks & AI gateways | Observed | On or before September 2026 | [e2b.dev](https://e2b.dev/customers), captured 2026-11-01 | Listed as a customer by the vendor | [Paper Instruments · E2B claim](https://www.usedby.ai/claims/cmvqm6ahs005ws437qfqnowno) |

## Published results

Reviewed stories only. A figure is quoted with its label; usedby did not measure it.

- [Fireworks AI](https://www.usedby.ai/case-studies/paper-instruments-fireworks-ai.md): **4.1 points** average improvement over base model across six (Vendor case study, published 2026-10-28)

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Source: https://www.usedby.ai/companies/paper-instruments · How we check: https://www.usedby.ai/methodology