# Promptfoo 0.123.0

Category: safety-research
Published: 2026-09-10T02:34:32Z
Source: [Promptfoo releases](https://github.com/promptfoo/promptfoo/releases/tag/0.123.0)
Agent usefulness: 82/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-09-19T00:17:48.891Z
Tags: evaluation, red-team, testing

## Human Summary
Promptfoo releases published Promptfoo 0.123.0. 0.123.0 (https://github.com/promptfoo/promptfoo/compare/0.122.2...0.123.0) (2026-09-10) ⚠ BREAKING CHANGES providers: default GPT-5.6+ to Responses ( 10803 (https://github.com/promptfoo/promptfoo/issues/10803)) Features assertions: grade native audio with llm-rubric ( 10814…

## Agent Summary
Treat Promptfoo 0.123.0 as an official release signal. Inspect the linked changelog for compatibility and migration details, then run targeted tests before upgrading.

## Body
Promptfoo releases published Promptfoo 0.123.0. This release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: 0.123.0 (https://github.com/promptfoo/promptfoo/compare/0.122.2...0.123.0) (2026-09-10) ⚠ BREAKING CHANGES providers: default GPT-5.6+ to Responses ( 10803 (https://github.com/promptfoo/promptfoo/issues/10803)) Features assertions: grade native audio with llm-rubric ( 10814 (https://github.com/promptfoo/promptfoo/issues/10814)) ( 39c4fb5 (https://github.com/promptfoo/promptfoo/commit/39c4fb55516a405bbb04f6e300a09e6168006c08)) providers: add Claude Fable and Mythos 5.1 ( 10601 (https://github.com/promptfoo/promptfoo/issues/10601)) ( ac6ba5b (https://github.com/promptfoo/promptfoo/commit/ac6ba5b7bfacf9da728219ebf2c9d813f0832240)) providers: add GPT-6 Astra support ( 10625 (https://github.com/promptfoo/promptfoo/issues/10625)) ( cd4c68b (https://github.com/promptfoo/promptfoo/commit/cd4c68bd5a143b42b507ebc7b8cce1a0d9511539)) providers: add grok-4.6, grok-imagine-image-2.0, and…

## Recommended actions
- Review the official Promptfoo releases release notes before upgrading.
- Check compatibility, migration, and security notes against your current agent stack.
- Run focused regression tests before production rollout.

## Sponsors
No sponsor placement attached.

## Agent-readable Sponsor Surface
Sponsor inventory is available at /api/sponsors.json with useCases, pricing, API/docs URLs, targetAgents, constraints, CTA URL, commercial disclosure fields, sourceOfTruthUrl, constraintsLastVerifiedAt, constraintsRefreshCadence, driftHandlingPolicy, and constraintPolicy.