Platform release 2026.4

New

Marketplace general availability with 140 launch listings across models, agents, connectors and evaluation suites, each carrying commercial terms, data handling position and evaluation results in a standard form.

Typed tool errors. Tool contracts now declare their failure modes as a typed taxonomy — permission, not found, locked, validation, upstream unavailable — with retryability declared per type. Agents recover far more sensibly than they did from generic error strings.

Retrieval abstention scoring. Retrieval quality is now scored independently of generation, with an explicit abstain decision before the model runs. Correct refusal is reported as a first-class outcome in evaluation.

Improved

• Tool selection accuracy improved for registers above twenty tools through hierarchical composition.
• Vector index refresh is incremental rather than full-corpus on document change.
• Lineage capture extended to cover survivorship decisions, not only source records.
• Multi-node training job scheduling accounts for interconnect topology.

Fixed

• Fixed a case where superseded document versions could be retrieved when recency weighting was disabled.
• Fixed agent memory leaking across sessions where the same principal held two concurrent conversations.
• Fixed evaluation results being cached across model versions with the same tag.

Deprecated