Decision Workspace
umf vs langdb_core vs vllora_llm
Side-by-side comparison of Rust crates
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
52
langdb_core
growingv0.3.2
AI gateway Core for LangDB AI Gateway.
51
vllora_llm
experimentalv0.1.23
LLM client layer for the Vllora AI Gateway: unified chat-completions over multiple providers (OpenAI, Anthropic, Gemini, Bedrock, LangDB proxy) with optional tracing/telemetry.
Core Metrics
| umf | langdb_core | vllora_llm | |
|---|---|---|---|
| Health Score | 66 | 52 | 51 |
| Total Downloads | 910 | 7.1K | 615 |
| 30d Downloads | 0 | 0 | 0 |
| Dependents | 273 | 19 | 36 |
| Releases | 12 | 12 | 12 |
| Last Updated | 33d ago | 238d ago | 115d ago |
| Age | 6m | 1y 3m | 5m |
Health Breakdown
umf
Maintenance
18
Quality
16
Community
13
Popularity
4
Documentation
15
langdb_core
Maintenance
10
Quality
12
Community
12
Popularity
5
Documentation
13
vllora_llm
Maintenance
14
Quality
11
Community
10
Popularity
3
Documentation
13
Technical Details
| umf | langdb_core | vllora_llm | |
|---|---|---|---|
| Version | 0.2.6 | 0.3.2 | 0.1.23 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT OR Apache-2.0 | Apache-2.0 | Apache-2.0 |
| Dependencies | 6 | 49 | 34 |
| Crate Size | 36KB | 241KB | 175KB |
| Features | 7 | 2 | 2 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2021 | 2021 | 2021 |
| MSRV | 1.70 | — | — |
| Owners | 1 | 2 | 1 |
Links
Quick Verdict
- •umf leads with a health score of 66/100, but none of the options score above 80.
- •langdb_core has the most downloads (7.1K), suggesting wider adoption.
- •umf is depended on by 273 crates — strongest ecosystem trust.