Comparisons & Migrations
5 issues in this category
Promptfoo alternatives after OpenAI acquisition
Promptfoo joined OpenAI on March 9, 2026. MIT license preserved; the steward changed. For multi-provider eval and red-teaming, the credible 2026 alternatives.
Langfuse alternatives: the honest comparison
Langfuse alternative tools compared in 2026: five buyer scenarios where Langfuse isn't the right fit, with honest tool recommendations for each.
LangSmith alternatives without per-trace fees
LangSmith's auto-upgrade-on-feedback can turn per-trace billing superlinear. Compare Langfuse, Helicone, Phoenix, Braintrust, and where Prompt Assay fits.
PromptLayer alternatives: the honest comparison
PromptLayer alternatives compared honestly: current 2026 pricing, BYOK posture, and when Prompt Assay, LangSmith, Langfuse, or Braintrust fits better.
Migrate from Humanloop: a 2026 re-home guide
Humanloop shut down Sep 2025. If the replacement you picked isn't sticking, this 2026 guide covers the durable asset, destinations, and BYOK math.