Toolbox/Agent capabilities

Voice & realtime

voice and realtime conversational agents

3 repositories, most starred first

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State of the category

GetStream/Vision-Agents GetStream/Vision-Agents is the de facto leader by adoption and offers the most complete ultra-low-latency, real‑time voice+video agent stack; teams should choose it when they want production-ready edge-hosted agents but be aware it assumes a cloud/edge service model rather than a fully self-hosted, game‑embedded, or ultra‑specialized avatar pipeline.

Self-hosting & Privacy

Organizations with strict data, compliance, or offline requirements need fully self-hostable stacks rather than cloud/edge‑hosted services, because keeping audio/video processing on premises changes architecture and vendor risk profiles.

→ CyberVerse

Game‑native NPCs

Game teams need drop‑in NPC tooling that integrates without modifying game source, supports runtime constraints, and provides synchronized lip‑sync/voice behavior for shipped titles.

→ Interactive-LLM-Powered-NPCs

Photoreal Avatars & Personas

Consumer apps and virtual human experiences demand single‑photo avatar generation, continuous persona/multi‑agent management and believable facial animation to create convincing, uninterrupted voice‑first interactions.

→ CyberVerse, Interactive-LLM-Powered-NPCs

Find your fit

Which one matches your setup?

Answer any of the questions — the shortlist updates as you go. Recommendations come from the capability passports below, nothing else.

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Model access?

Pick at least one answer to get a shortlist.

Side by side

Comparison matrix

Axes are extracted from each project's docs by our review pipeline; the maturity score is computed from stars, growth and commit activity — not an opinion. Click a column to sort.

	Runs in	Models	Context					Cost to run
GetStream/Vision-Agents ↗Leader ⭐ 8.2k +9/7d	CLIWeb appCI	BYOKOpenAIAnthropicGemini	Whole-repo analysis	None mentioned	●●●●●	Cloud APIs (your key)	●●●●●	Free Stream tier (333,000 participant minutes) + your model/API costs
AkshitIreddy/Interactive-LLM-Powered-NPCs ↗ ⭐ 732 +5/7d	CLIIDE	BYOKOpenAI	Per-character files	Prompt shaping	●●●●●	Cloud API key	●●●●●	Requires your Cohere API key (free trial available); optional OpenAI/GPT-4 if configured.
Lynpoint/CyberVerse ↗ ⭐ 1.7k +18/7d	Web appCLI	BYOKFixed provider	Session only	None	●●●●●	Self-hostable	●●●●●	Your API keys — provider usage billed

At a glance

Capability profiles

Six axes, 0–5 each. The shape tells you the strategy: a wide hexagon is a generalist, a spike is a specialist.

GetStream/Vision-Agents⭐ 8.2k

Delivers ultra-low-latency, real-time video+voice agents using Stream's edge network with pluggable vision processors and native LLM integrations.

AkshitIreddy/Interactive-LLM-Powered-NPCs⭐ 732

Provides real-time, lip-synced facial animation and voice integration for NPCs in existing games without modifying game source code.

Lynpoint/CyberVerse⭐ 1.7k

Provides a self-hostable, real-time digital-human agent platform that can drive optional avatar video from a single photo while combining Persona/SubAgent multitasking for uninterrupted voice-first interaction.