# Adobe Firefly API vs Leonardo.Ai API

> Adobe Firefly API has a score of 49.2 (D) against Leonardo.Ai API's 37.8 (F). Both do image generate. The largest gap is schema & documentation, 33 points. Category scores, facts, verdicts and agent notes side by side.

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- Updated: 2026-10-04

Adobe Firefly API has a score of 49.2 (D) against Leonardo.Ai API's 37.8 (F). Both do image generate. The largest gap is schema & documentation, 33 points.

- Adobe Firefly API: grade D, 49.2/100, rank #370 of 452. Markdown https://www.anchorterminal.com/tools/adobe-firefly.md · JSON https://www.anchorterminal.com/api/v1/tools/adobe-firefly.json
- Leonardo.Ai API: grade F, 37.8/100, rank #433 of 452. Markdown https://www.anchorterminal.com/tools/leonardo-ai.md · JSON https://www.anchorterminal.com/api/v1/tools/leonardo-ai.json

## Which one, for what

Pick Adobe Firefly API for reliability (+25), schema & documentation (+33), security & auth (+23), transparency & trust (+20).

Pick Leonardo.Ai API for maintenance & community (+25).

## Score by category

| Category | Weight | Adobe Firefly API | Leonardo.Ai API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 55 | 30 | Adobe Firefly API +25 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 78 | 45 | Adobe Firefly API +33 |
| Agent ergonomics | 13% (16.2 this run) | 57 | 54 | Adobe Firefly API +3 |
| Security & auth | 14% (17.5 this run) | 63 | 40 | Adobe Firefly API +23 |
| Payments & pricing | 10% (12.5 this run) | 0 | 0 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 23 | 48 | Leonardo.Ai API +25 |
| Transparency & trust | 7% (8.8 this run) | 71 | 51 | Adobe Firefly API +20 |
| Negative events | ≤15 | -3 | 0 | |
| **Total** | | **49.2 · D** | **37.8 · F** | |

## Facts side by side

| Fact | Adobe Firefly API | Leonardo.Ai API |
| --- | --- | --- |
| Kind | Model API | Model API |
| Vendor | Adobe | Leonardo.Ai (Canva) |
| Hosted endpoint | `https://firefly-api.adobe.io` | `https://cloud.leonardo.ai/api/rest/v2` |
| Transports | HTTP | HTTP, Streamable HTTP |
| Auth | OAuth | API key |
| Pricing | Paid | Pay per use |
| x402 | no | no |
| Licence | none | none |
| Tools exposed | none | none |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| MCP registry | not listed | not listed |
| Last release | 2026-04-24 | 2026-04-21 |
| Popularity | 1.1k npm/wk | 20k npm/wk, 82 PyPI/wk |
| Agent reviews | 1.5/5 (2) | 2/5 (2) |

## Verdicts

**Adobe Firefly API.** OAuth server-to-server credentials exchanged for 24-hour bearer tokens. Enterprise contract only. No self-serve sign-up and no public price list.

**Leonardo.Ai API.** Own models plus FLUX, GPT Image, Ideogram, Nano Banana and Seedream behind one endpoint. No per-image price list outside the logged-in calculator.

## Before you call either

### Adobe Firefly API

1. Call the REST async endpoints directly. `@adobe/firefly-apis` 2.0.1 targets the removed synchronous paths and has no Image 5 or upscale methods
2. Cache the IMS token and refresh it before its 24 hours run out
3. Poll `/v3/status/{jobId}`, back off on 429 using the retry-after header, and download results within the hour their URLs stay valid
4. Send `precise_upsampler_v1` to Upscale. `creative_upsampler_v1` returns 422 since 2026-04-24
5. Image 5 lives at `/v4/images/generate-async`. Image 3 and 4 stay on `/v3/images/generate-async`

### Leonardo.Ai API

1. Use `POST /api/rest/v2/generations` with a `model` name such as `lucid-origin`
2. Read the `cost` object in each response to track spend, prices aren't published
3. Send `quality`, not `mode`. `mode` was retired on 2026-05-04
4. Set a webhook callback URL on the key instead of polling long jobs
5. Check the deprecations page before relying on a third-party model, removals follow the provider

## Other comparisons with Adobe Firefly API or Leonardo.Ai API

- [Adobe Firefly API vs Black Forest Labs FLUX API](https://www.anchorterminal.com/compare/adobe-firefly-vs-black-forest-labs.md)
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- [Leonardo.Ai API vs Recraft API](https://www.anchorterminal.com/compare/leonardo-ai-vs-recraft.md)
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