Show HN: GPT-5 available for free on Gensee

Gensee is a developer-oriented AI agent optimization platform that makes GPT-5 available for free. It eliminates manual model migration overhead by enabling instant model swapping, automated A/B testing, and smart routing across different LLMs. Developers can clone existing agents, swap underlying models with one click, and immediately compare outputs, latency, and costs without code changes or redeployment.

Key Points

• •Instant Model Swapping: Clone agents and swap underlying models (e.g., GPT-4o to GPT-5) with one click, no code changes required
• •Automated A/B Testing: Run test cases simultaneously against multiple model versions with side-by-side comparison of outputs, latency, and cost
• •Smart Model Routing: Automatically select optimal model combinations for tasks to optimize for quality, cost, or speed
• •Pre-built Agent Templates: Access ready-made agents to benchmark across the entire spectrum of new models
• •Zero Redeployment: Test new models without redeploying existing agents or workflows
• •Reduce Engineering Overhead: Eliminate manual testing and analysis cycles when new models are released
• •Free GPT-5 Access: Developers can immediately evaluate GPT-5 on their existing projects
• •Developer-Focused: Platform designed specifically for agent developers managing multiple model versions

Workflow Diagram

Concepts