Registry › Compare › Bolna vs Speech To Speech

Bolna vs Speech To Speech

Speech To Speech leads on trust: 63.2/100 (Grade C) against 58.0/100 (Grade C), a 5.2-point gap. Bolna leads on supply-chain integrity; Speech To Speech leads on transparency and adoption.

C Bolna 58.0

Conversational voice AI agents

bolna-ai/bolna · #726 overall · #8 Voice & Conversational · coverage C (2/5)

Choose Bolna if supply-chain integrity matters most.

+1.8Safety / Integrity: 99% of recent commits signed, against 35%

C Speech To Speech 63.2

Build voice agents with open-source models

huggingface/speech-to-speech · #577 overall · #5 Voice & Conversational · coverage C (2/5)

Choose Speech To Speech if transparency and adoption matter most.

+2.9Adoption: 13.4k GitHub stars against 787
+0.9Transparency: OSSF Scorecard 6.6 against 5.5
+0.9Maintenance

Where they differ

11.8

Safety / IntegrityBolna +1.8

10.0

13.2

TransparencySpeech To Speech +0.9

14.1

19.0

MaintenanceSpeech To Speech +0.9

19.9

7.0

AdoptionSpeech To Speech +2.9

9.9

-3.8

Runtime calibrationSpeech To Speech +2.3

-1.5

1 dimension identical: Identity 10.8 · Full evidence table

An independent, evidence-based trust comparison of Bolna and Speech To Speech, two Voice & Conversational projects in the HVTracker registry. Scores come from public, checkable signals — supply-chain provenance, OSSF Scorecard, maintenance, and adoption — not popularity.

Full evidence

Signal	Bolnabolna-ai/bolna	Speech To Speechhuggingface/speech-to-speech
HVTrust score	58.0	63.2
Evidence grade	C	C
Coverage grade	C	C
Overall rank	#726	#577
Rank in Voice & Conversational	#8	#5
GitHub stars	787	13.4k
Last updated	today	1d ago
Build provenance	No	No
OSSF Scorecard	5.5 / 10	6.6 / 10
License	MIT	Apache-2.0
Downloads	—	—
Trust dimensions (points earned)
Safety / integrity / 25	11.8	10.0
Identity & provenance / 18	10.8	10.8
Transparency / 17	13.2	14.1
Maintenance / 20	19.0	19.9
Adoption / 20	7.0	9.9
Runtime capability surface (full matrix)
MCP server	—	—
External providers	6 — ElevenLabs, Google Gemini, Groq, …	2 — OpenAI, OpenRouter
Requires API keys	Yes	Yes
Plugin surface	—	—
Provenance drift	—	—

Open in the live compare tool → Bolna profile Speech To Speech profile More Voice & Conversational →

How to read this: HVTrust (0–100) weighs supply-chain signals (provenance, OSSF Scorecard, signed commits, open license) alongside real-world adoption, scaled by an evidence-confidence factor. Grade bands: A ≥ 80, B ≥ 65, C ≥ 50, D < 50. Signals refresh daily. Full methodology v4.4 →