---
title: "Changelog: Lazu API, model and docs updates"
description: "What changed in the Lazu API, the model catalog and these docs, newest first: new models, endpoints, pricing lanes and fixes."
source: https://lazu.ai/docs/changelog
updated: 2026-10-02
---

# Changelog

## 2026-09-30 — Agent sessions, receipts and long-context prices

- Rebuilt Agent sessions around tasks, models and individual request receipts ([#322](https://github.com/JessyTsui/lazu/pull/322)).
- Added session activity views and subagent lanes ([#327](https://github.com/JessyTsui/lazu/pull/327)). These show gateway activity; local tools are outside the observation boundary.
- Connected long-context pricing to cost calculation, request receipts and public model pages ([#333](https://github.com/JessyTsui/lazu/pull/333)). The actual tier depends on the configured model and lane.
- Corrected sitemap modification dates to reflect actual content changes ([#337](https://github.com/JessyTsui/lazu/pull/337)).

These dates refer to changes merged into the source repository. A self-hosted installation's availability depends on its deployed version. [Reconcile a session's costs](https://lazu.ai/docs/agent-session-costs) using the exported details.

## 2026-05-28 — Usage metadata and cache fields

- Added normalized cache usage fields for OpenAI-compatible responses:
  `cached_tokens`, `cache_write_tokens`, `cache_write_5m_tokens`,
  `cache_write_1h_tokens`, and `cache_miss_tokens`.
- Added `usage_capabilities` to the model catalog so clients can discover
  reported and billable dimensions before sending a request.
- Added `GET /api/usage/requests/{request_id}` for request-level usage,
  billing line items, provider raw cache fields, and routing metadata.
- Documented Qwen/DashScope, DeepSeek, Anthropic, Gemini, OpenAI, and
  OpenRouter cache reporting differences.

## 2026-05-12 — Static docs return to the VPS

- Restore Vocs as the active documentation app for `docs.lazu.ai`.
- Serve docs as a standalone static nginx container.
- Keep the product brand and API examples consistent across the website and docs.

## 2026-05-09 — OpenAPI reference cleanup

- Keep `packages/contracts/openapi/lazu-api-reference.v1.yaml` as the source of truth.
- Sync OpenAPI JSON/YAML into the docs public assets during build.
- Keep the interactive reference available for request and response field checks.