Decision Workspace
formal-ai vs async-openai vs umf
Side-by-side comparison of Rust crates
56
formal-ai
experimentalv0.123.0
Formal symbolic AI implementation with OpenAI-compatible APIs
67
async-openai
growingv0.40.2
Rust library for OpenAI
66
umf
experimentalv0.2.6
Universal Message Format (UMF) - Provider-agnostic message representation for LLM interactions with ChatML formatting, internal hub model, and MCP support
Core Metrics
| formal-ai | async-openai | umf | |
|---|---|---|---|
| Health Score | 56 | 67 | 66 |
| Total Downloads | 1.3K | 5.1M | 910 |
| 30d Downloads | 1.4K | 593.0K | 0 |
| Dependents | 0 | 5.0K | 273 |
| Releases | 102 | 117 | 12 |
| Last Updated | today | 3d ago | 33d ago |
| Age | 13d | 3y 5m | 6m |
Health Breakdown
formal-ai
Maintenance
19
Quality
12
Community
6
Popularity
4
Documentation
15
async-openai
Maintenance
19
Quality
13
Community
15
Popularity
8
Documentation
12
umf
Maintenance
18
Quality
16
Community
13
Popularity
4
Documentation
15
Technical Details
| formal-ai | async-openai | umf | |
|---|---|---|---|
| Version | 0.123.0 | 0.40.2 | 0.2.6 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | Unlicense | MIT | MIT OR Apache-2.0 |
| Dependencies | 11 | 27 | 6 |
| Crate Size | 1.2MB | 232KB | 36KB |
| Features | 2 | 56 | 7 |
| Yanked % | 0.0% | 0.9% | 0.0% |
| Edition | 2021 | 2021 | 2021 |
| MSRV | 1.70 | 1.75 | 1.70 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •async-openai leads with a health score of 67/100, but none of the options score above 80.
- •async-openai is depended on by 5.0K crates — strongest ecosystem trust.