Inngest

Sessions, AI metadata depth, and experiment tooling headline the latest Inngest releases.

Sessions shipped as a first-class primitive. Server-side session parse and emit landed in v1.31.0 alongside a dashboard UI; event payloads in the JS SDK gained a sessions field in v4.7.0; the invoke button now accepts session context; and v1.35.0 added REST V2 endpoints (GET /v2/sessions and GET /v2/sessions/{key}/{id}/runs) for programmatic session queries.

AI step observability expanded across SDKs. The JS SDK now extracts model, provider, response ID, token counts, finish reasons, and operation names from OTel GenAI spans — with an opt-out flag in v4.8.0. Server-side AI Metadata fields were renamed in v1.36.0: .model → .request_model and .system → .provider to align with OpenTelemetry GenAI standards. @inngest/otel added CommonJS and Google AI support in v0.2.0.

Experiments gained a REST API and richer charts. v1.35.0 added GET /v2/experiments and per-function experiment endpoints to the REST V2 API, plus box-plot charts for visualizing numeric metrics.

Rerun from step now works in the cloud. Previously dev-server only, the feature shipped in v1.34.0 for all step types, including the ability to update step inputs before rerunning.

SvelteKit serve handlers added streaming. JS SDK v4.12.0 added streaming support to SvelteKit serve handlers and fixed a hang on parallel steps when optimizeParallelism is off.