generated: '2026-08-26'
method: searched
source: https://docs.hyperstack.cloud/docs/release-notes
docs: https://docs.hyperstack.cloud/docs/release-notes
scheme: dated
cadence: >-
  Dated entries, roughly weekly. 39 dated clusters published between 2026-01-06 and
  2026-08-25 - a genuinely maintained log, not a stale page.
current_version:
  api: v1
  spec_line: '1.54.x'
  note: >-
    The public API has a single major version (v1) that has never been rebased. Change is
    communicated exclusively through these dated release notes; there is no version
    number on a release, no RSS/Atom feed, and no machine-readable changelog.
tags:
- Hyperstack Core
- AI Studio
entries:
- date: '2026-08-25'
  product: AI Studio
  title: Fine-tuning and Hyperstack-hosted models removed
  breaking: true
  highlights:
  - >-
    Fine-tuning and Hyperstack-hosted base models removed from BOTH the console and the
    API. LoRA adapter training and import, model deployment, model aliases, model
    evaluations, training metrics, logs, datasets and data synthesis all withdrawn with
    them.
  - >-
    Retired models: openai/gpt-oss-120b, mistralai/Mistral-Small-24B-Instruct-2501,
    meta-llama/Llama-3.3-70B-Instruct, meta-llama/Llama-3.1-8B-Instruct. Callers must
    pick a replacement from the Model Catalog and change the model name in their requests.
  - >-
    Unaffected: inference through the API, the Playground, Knowledge Bases, system prompts
    and conversations. Billing history for past usage remains available.
  note: >-
    The largest breaking change in the window and the clearest deprecation signal in this
    repo. AI Studio is now inference-only over third-party hosted models. Note that
    billing history endpoints for the withdrawn features are still declared in the
    Hyperstack OpenAPI (Get_fine-tuning_billing_history,
    Get_data_synthesis_billing_history, Get_model_evaluation_billing_history), so the
    contract still describes surfaces the product no longer sells.
- date: '2026-08-10'
  product: Hyperstack Core
  title: Operation failure reporting fix
  breaking: false
  highlights:
  - >-
    Operations such as creating a VM or deleting a volume now report a failure when they
    cannot complete. Previously an operation could intermittently stop without reporting
    an error, so the request appeared accepted but never completed.
- date: '2026-08-06'
  product: AI Studio
  title: Knowledge Bases and grounded responses
  breaking: false
  additions:
  - New Knowledge Bases APIs for programmatic management.
  - Grounding a message by passing a knowledge base to the Send message endpoint.
  - Cited sources with numbered citation markers on grounded replies.
- date: '2026-08-05'
  product: Hyperstack Core
  title: Console fixes and improvements
  breaking: false
- date: '2026-08-03'
  product: Hyperstack Core
  title: Docs MCP Server
  breaking: false
  additions:
  - >-
    Launch of the hosted, anonymous, read-only documentation MCP server at
    https://docs.hyperstack.cloud/mcp.
- date: '2026-07-30'
  product: AI Studio
  title: Kimi K3 in AI Studio
  breaking: false
- date: '2026-07-29'
  product: Hyperstack Core
  title: Public IP address accuracy fix
  breaking: false
- date: '2026-07-27'
  product: Hyperstack Core
  title: SSH key validation and Kubernetes cluster fixes
  breaking: false
- date: '2026-07-22'
  product: Hyperstack Core
  title: Cluster billing history ownership validation
  breaking: false
- date: '2026-07-21'
  product: Hyperstack Core
  title: Cloud-init script validation
  breaking: false
- date: '2026-07-20'
  product: Hyperstack Core
  title: Volume attachment state fix
  breaking: false
- date: '2026-07-16'
  product: Hyperstack Core
  title: Expanded email notification controls
  breaking: false
- date: '2026-07-14'
  product: Hyperstack Core
  title: Concurrent creation reliability
  breaking: false
- date: '2026-07-09'
  product: Hyperstack Core
  title: Resource Activity and platform fixes
  breaking: false
- date: '2026-07-06'
  product: AI Studio
  title: Image-to-text models and conversation history
  breaking: false
- date: '2026-06-30'
  product: Hyperstack Core
  title: Cumulative and Delta views for performance metrics
  breaking: false
- date: '2026-06-29'
  product: Hyperstack Core
  title: Faster API responses
  breaking: false
- date: '2026-06-23'
  product: Hyperstack Core
  title: Organization management improvements
  breaking: false
- date: '2026-06-22'
  product: Hyperstack Core
  title: Kubernetes version update and payment receipt fix
  breaking: false
- date: '2026-06-16'
  product: AI Studio
  title: Image Playground and vision models
  breaking: false
window:
  from: '2026-06-16'
  to: '2026-08-25'
  entries_in_window: 20
  total_dated_clusters_on_page: 39
  earliest_on_page: '2026-01-06'
machine_readable:
  feed: false
  note: No RSS/Atom feed or JSON changelog is published; the page is HTML only.