# Gusto vs PayFit

> Gusto scores 63.3 (B) to PayFit's 55.5 (C) for payroll records. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/gusto-vs-payfit
- Markdown: https://www.anchorterminal.com/compare/gusto-vs-payfit.md (~2,250 tokens)
- Slim: https://www.anchorterminal.com/compare/gusto-vs-payfit.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/gusto-vs-payfit.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-09

Gusto scores 63.3 (B) on agent readiness against PayFit's 55.5 (C), and leads in 5 of 7 scored categories. PayFit leads on reliability and transparency & trust. Both do payroll records.

- Gusto: grade B, 63.3/100, rank #399 of 950. Markdown https://www.anchorterminal.com/tools/gusto.md · JSON https://www.anchorterminal.com/api/v1/tools/gusto.json
- PayFit: grade C, 55.5/100, rank #656 of 950. Markdown https://www.anchorterminal.com/tools/payfit.md · JSON https://www.anchorterminal.com/api/v1/tools/payfit.json
- Best payroll APIs and embedded payroll for AI agents: https://www.anchorterminal.com/best/payroll/index.md
- All 55 payroll comparisons: https://www.anchorterminal.com/compare/payroll/index.md

## Which one, for what

### Gusto (B)

Good for: A software platform that wants to run US payroll for its own customers and can pass Gusto's partner reviews.

Ahead on:
- Schema & documentation, 86 against 78
- Agent ergonomics, 82 against 51
- Security & auth, 60 against 51
- Payments & pricing, 15 against 10
- Maintenance & community, 76 against 28

Watch for: Production keys need commercial, security and implementation reviews with Gusto's partnerships team, and the docs say not all use cases are supported

### PayFit (C)

Good for: An agent working for an employer that already runs payroll on PayFit in France, the UK or Spain and needs employees, contracts, payslips, absences or the payroll journal.

Ahead on:
- Reliability, 79 against 58
- Transparency & trust, 70 against 61

Watch for: No operation runs, previews or approves a payroll. The API reads payroll status, payslips and accounting exports


## Score by category

| Category | Weight | Gusto | PayFit | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 58 | 79 | PayFit +21 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 86 | 78 | Gusto +8 |
| Agent ergonomics | 13% (16.2 this run) | 82 | 51 | Gusto +31 |
| Security & auth | 14% (17.5 this run) | 60 | 51 | Gusto +9 |
| Payments & pricing | 10% (12.5 this run) | 15 | 10 | Gusto +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 76 | 28 | Gusto +48 |
| Transparency & trust | 7% (8.8 this run) | 61 | 70 | PayFit +9 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **63.3 · B** | **55.5 · C** | |

## Facts side by side

| Fact | Gusto | PayFit |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Gusto, Inc. | PayFit SAS |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | HTTP | HTTP |
| Auth | OAuth | OAuth or key |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | Proprietary service under Gusto's API Policy and Developer Terms of Service. The API clients on GitHub are MIT, and the React SDK and the Gusto CLI are Apache-2.0 | Proprietary service under PayFit's general terms of service |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-10-01 | 2026-07-23 |
| Terms last updated | couldn't be read | 2026-06-15 |
| Privacy policy last updated | no document linked | 2026-06-15 |
| Customer content may train models | couldn't be read | not found in the text |
| Terms restrict automated access | couldn't be read | not found in the text |
| Terms restrict benchmarking | couldn't be read | yes |
| Terms or service can change without notice | couldn't be read | yes |
| Arbitration or class-action waiver | couldn't be read | not found in the text |
| Popularity | 2 stars, 25k npm/wk | none |

## Verdicts

**Gusto.** This listing covers the Embedded Payroll API. Every reference page carries an OpenAPI 3.1 definition, payroll is calculated as a preview before submission, and each API version gets 12 months of deprecation support. Production needs commercial and security approval, no price was readable, and the status page lists 11 incidents between 14 July and 5 October 2026, five marked major.

**PayFit.** A public OpenAPI 3.0 file, llms.txt and scoped keys let a paying customer's agent read payroll outputs and write absences. The API cannot run or approve a payroll, new partner integrations are not being accepted, and no idempotency keys or SDKs were found.

## Before you call either

### Gusto

1. Develop against https://api.gusto-demo.com. Production at https://api.gusto.com needs keys Gusto issues after its reviews
2. Send `X-Gusto-API-Version: 2026-06-15` on every call. Without it the application's minimum version applies
3. Send the resource's current `version` with every PUT, and only the fields to change. A stale version returns 409
4. Calculate and submit return 202. Poll GET on the payroll until `calculated_at` is set or the status is processed, and read `submission_blockers` first
5. For a company already on Gusto, the Embedded API is the wrong route. Use the Gusto CLI or the MCP server at https://mcp.api.gusto.com, which draft payroll but can't submit it

### PayFit

1. Have a company admin create the key at app.payfit.com/integrations/hub/api with only the scopes the task needs. The key is shown once
2. POST the key to `https://oauth.payfit.com/introspect` to get `company_id`, then call `https://partner-api.payfit.com/companies/{companyId}/...`
3. Page lists with `nextPageToken` and `maxResults`, which defaults to 10 and stops at 50
4. Check before repeating a failed POST. There is no idempotency key, and `POST /absences` creates an absence that is already validated
5. A collaborator or contract created through the API stays incomplete until an HR admin finishes it in the PayFit app, and a new contract takes 2 to 5 minutes to appear

## Questions

### Which is better for AI agents, Gusto or PayFit?

Gusto scores 63.3 (B) on agent readiness against PayFit's 55.5 (C), and leads in 5 of 7 scored categories. PayFit leads on reliability and transparency & trust.

### Do Gusto and PayFit need an API key?

Gusto uses an OAuth sign-in. PayFit takes an API key or an OAuth sign-in.

### Can an agent call Gusto and PayFit without installing anything?

No hosted endpoint is listed for Gusto. No hosted endpoint is listed for PayFit.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/gusto-vs-payfit.json, and with the fewest tokens: https://www.anchorterminal.com/compare/gusto-vs-payfit.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "gusto", "b": "payfit"}`. From a terminal: `anchor compare gusto payfit`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/gusto.json and https://www.anchorterminal.com/api/v1/tools/payfit.json

## Other comparisons with Gusto or PayFit

- [Argyle vs Gusto](https://www.anchorterminal.com/compare/argyle-vs-gusto.md)
- [Argyle vs PayFit](https://www.anchorterminal.com/compare/argyle-vs-payfit.md)
- [Check vs PayFit](https://www.anchorterminal.com/compare/check-payroll-vs-payfit.md)
- [Employment Hero Payroll vs PayFit](https://www.anchorterminal.com/compare/employment-hero-vs-payfit.md)
- [Everee vs PayFit](https://www.anchorterminal.com/compare/everee-vs-payfit.md)
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- [Finch vs PayFit](https://www.anchorterminal.com/compare/finch-vs-payfit.md)
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- [Paychex vs PayFit](https://www.anchorterminal.com/compare/paychex-vs-payfit.md)
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- [PayFit vs Zeal](https://www.anchorterminal.com/compare/payfit-vs-zeal.md)
- [Check vs Gusto](https://www.anchorterminal.com/compare/check-payroll-vs-gusto.md)
- [Employment Hero Payroll vs Gusto](https://www.anchorterminal.com/compare/employment-hero-vs-gusto.md)
- [Everee vs Gusto](https://www.anchorterminal.com/compare/everee-vs-gusto.md)
- [Gusto vs Salsa](https://www.anchorterminal.com/compare/gusto-vs-salsa.md)
- [Gusto vs Worklio](https://www.anchorterminal.com/compare/gusto-vs-worklio.md)
- [Gusto vs Zeal](https://www.anchorterminal.com/compare/gusto-vs-zeal.md)