Multi-Model Testing
Run your prompt against 300+ models and compare results before committing to one.
Promptmark connects to 300+ models from OpenAI, Anthropic, Google, Meta, Mistral, and dozens more through OpenRouter. Pick a prompt, pick a model, and run it. Responses stream in real time.
Every test records the model used, token count, latency, and cost. Bring your own OpenRouter API key — Promptmark never handles your AI spend.
What you can do
- 300+ models from OpenAI, Anthropic, Google, Meta, Mistral, and more
- Streaming responses with real-time output
- Token count, latency, and cost tracking per test
- Response quality ratings for longitudinal tracking
- BYOK — your OpenRouter API key, your billing
- Model browser with search, favorites, and provider filtering
Try it free
No credit card required