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Replit Agent 3 goes autonomous + ElevenLabs upgrades voice agents (57)

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O P
September 12, 2025

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In today’s Agent Pulse:

  • 📡 Latest AI Agents Development

  • ❤️ Open-Sourced Agents

  • ⚔️ Grok 4 is #1 on Agent Arena

  • 🧭 Agents Leaderboard

  • ✨ Featured Agents

  • 🗺️ Agents Landscape Map

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The Latest Agentic AI Development

🚀 Replit launches Agent 3

Replit unveiled Agent 3, its most autonomous coding agent yet. Key upgrades:

  • Self-testing & fixes: runs apps, finds bugs, and applies patches automatically.

  • Extended runtime: up to ~200 minutes per session for more complex builds.

  • Agent creation: can generate other agents and workflow automations.

Why it matters

Agent 3 shifts Replit from a coding assistant toward a hands-off software collaborator. Developers can focus less on debugging and more on product design, while enterprises gain a lightweight way to build internal automations without extra engineering overhead. The launch coincides with Replit’s $250M funding round (valuation: $3B), underscoring confidence in this direction.

What to watch

Autonomy brings both upside and risk. Potential concerns:

  • Over-reliance on self-fixes could introduce hidden bugs.

  • Real-world costs may challenge Replit’s “10× cheaper” efficiency claims.

  • Security and permissioning will be critical as agents integrate with third-party tools.

The next few weeks will show whether developers adopt Agent 3 as a true autonomous teammate or keep it in “experimental” mode.

🎤 ElevenLabs launches Voice Remixing & Agent Tests

Two big updates from ElevenLabs this week:

  • Voice Remixing (alpha): edit voices you own by changing style, accent, pacing, and tone while keeping their core identity. Supports expressive tags ([whispers], [laughs], etc.) and iterative remixes.

  • Tests for Agents: structured simulations to validate workflows, tool use, and human handoffs - integrated into CI/CD pipelines for safer deployments.

Why it matters

Voice Remixing gives creators far more creative control without starting from scratch, unlocking use cases in games, branding, and storytelling. Tests for Agents directly tackle reliability, helping teams avoid regressions and confidently push updates into production. Together, these features push ElevenLabs from being a voice generation tool toward becoming a voice agent platform ready for enterprise adoption.

What to watch

  • Alpha limits: Remixing may feel unstable or inconsistent across different voices.

  • Prompting is key: expressive tags and prompt length heavily affect results.

  • Testing overhead: designing realistic test scenarios adds work but is critical for long-term reliability.

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TOP 5 AI (Sep 11):

  1. Grok 4

  2. DeepSeek V3

  3. Llama 3.3 70B

  4. Gemini 2.5 Flash-Lite

  5. ChatGPT-4o

✨ Featured Agents

✨ AI Agents Leaderboard

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