Registry › Compare › Pipecat vs Speech To Speech

Pipecat vs Speech To Speech

Pipecat leads on trust: 85.4/100 (Grade A) against 63.2/100 (Grade C), a 22.2-point gap. Pipecat leads on provenance and adoption, and rests on broader evidence.

A Pipecat 85.4

Open Source framework for voice agents, multimodal apps, and realtime AI. Maintained by Daily and the community.

pipecat-ai/pipecat · #88 overall · #3 Voice & Conversational · coverage A (4/5)

Choose Pipecat if provenance and adoption matter most.

+7.5Adoption: 16.4k GitHub stars against 13.4k
+7.2Identity / Provenance: package provenance attested, against none
+7.0Safety / Integrity: package provenance attested, against none
A vs CEvidence coverage: 4 of 5 independent signal types, against 2

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)

Speech To Speech doesn't lead on any scored dimension in this pair.

Where they differ

17.0

Safety / IntegrityPipecat +7.0

10.0

18.0

Identity / ProvenancePipecat +7.2

10.8

13.9

TransparencySpeech To Speech +0.2

14.1

20.0

MaintenancePipecat +0.1

19.9

17.4

AdoptionPipecat +7.5

9.9

-0.9

Runtime calibrationPipecat +0.6

-1.5

Full evidence table

An independent, evidence-based trust comparison of Pipecat 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	Pipecatpipecat-ai/pipecat	Speech To Speechhuggingface/speech-to-speech
HVTrust score	85.4	63.2
Evidence grade	A	C
Coverage grade	A	C
Overall rank	#88	#577
Rank in Voice & Conversational	#3	#5
GitHub stars	16.4k	13.4k
Last updated	today	1d ago
Build provenance	Yes	No
OSSF Scorecard	6.3 / 10	6.6 / 10
License	BSD-2-Clause	Apache-2.0
Downloads	294k/wk	—
Trust dimensions (points earned)
Safety / integrity / 25	17.0	10.0
Identity & provenance / 18	18.0	10.8
Transparency / 17	13.9	14.1
Maintenance / 20	20.0	19.9
Adoption / 20	17.4	9.9
Runtime capability surface (full matrix)
MCP server	—	—
External providers	7 — Anthropic, Google Gemini, Groq, …	2 — OpenAI, OpenRouter
Requires API keys	No	Yes
Plugin surface	plugins	—
Provenance drift	Match	—

Open in the live compare tool → Pipecat 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 →