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News, updates, and insights about LLM testing, prompt engineering, and building reliable AI applications.

Test Case Search & Filtering: Find the Right Test in Seconds

January 30, 2026Read more

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Parallel Test Execution: Run Your Test Suites Faster

Multi-Turn Conversation Testing: Test Your AI Like Real Users Do

Keyboard Shortcuts: Navigate Probefish at the Speed of Thought

Probefish v1.0.0 "Marlin": Production-Ready LLM Testing

New in v0.8.0

Probefish 🐟 is open source now!

Minor update v0.7.1

Probefish 🐡 v0.9.0 (Swordfish) just dropped. MCP is here!