Changelog

Major changes to AI Foundation Services — new models, feature updates, and deprecations.

v1.2.3 — 2026-10

Aligns the documentation with the Service Description as of 30 September 2026, which is the binding source for everything below.

New preview model in the Test catalog: DiffusionGemma 26B A4B, free on any active plan, for chat and for the new Decisions (Jefan) endpoint. See Test / Preview Models and the Decisions guide.
New models on the Essential, Professional and Agentic plans: GPT-6.1 Sol, GPT-6 Luna, Claude Sonnet 5.5, and Gemini 3.8 Flash. Claude Opus 5.5 on Professional and Agentic. See Plans & Pricing.
GPT-6.1 Sol and GPT-6 Luna are priced by context length, with separate rates above 272k input tokens.

Gemini 3.1 Pro, Gemini 3.5 Flash and Gemini 3 Pro Image now run on Dynamic Shared Quota instead of fixed RPM/TPM limits.
The Service Description shipped with the docs has been updated.

GPT-5 to GPT 5.5, Claude 4.5 Haiku, Claude 4.6 Sonnet / Opus, Claude Opus 4.8 and Gemini 3 Pro retire on 2026-10-31. Gemini 3 Flash retires on 2026-11-30. See Scheduled for Retirement for replacements.

Aligns the documentation with the Service Description as of 31 August 2026, which is the binding source for everything below.

GLM 5.3 Flash (GLM-5.3-Flash) and Qwen 3.8 27B FP8 (Qwen3.8-27B-FP8) moved from preview to production on the Essential, Professional and Agentic plans. See Plans & Pricing.
New models on the Essential, Professional and Agentic plans: GPT-5.6 Terra and GPT-5.6 Luna. See Plans & Pricing.
Gemini 3.1 Pro is now priced by context length.
Cached input token pricing on T-Cloud-hosted models. See Prefix Caching.

The Queue API is not asynchronous. /queue endpoints work like /v2, but when you are over your rate limit they wait up to two minutes instead of returning 429 right away. The guide no longer mentions job polling or background processing. See Queued Requests.
The availability target is 99.5%, not the 99.9% previously published.
GLM 5.2 token prices reduced, and it moved to the standard model tier.
GPT-Image-2 pricing corrected.
Prefix caching is on by default on T-Cloud-hosted models, not opt-in.
Server location and data processing for the Gemini 3 family now read Worldwide instead of Europe. See Enterprise Trust.
The Anthropic models are labelled GCP / Azure.
The Service Description shipped with the docs has been updated.
Enterprise Trust category 1 now lists the models the Service Description names.

Llama 3.3 70B, Claude 4.5 Sonnet and Claude 4.5 Opus reached their retirement date. See Retired Models for replacements.

GLM 5.2 is listed on Coding Models again.
OpenCode: corrected the authentication URL in the plugin instructions.
/category/model-serving now redirects to the guides instead of returning a 404.

New preview model in the Test catalog: Qwen 3.8 27B FP8 — natively multimodal, free on any active plan. See Test / Preview Models.

New models on the Essential, Professional and Agentic plans: GPT-5.4, GPT-5.4 mini, GPT-5.5 and GPT-Image-2 (OpenAI); Gemini 3.1 Pro and Gemini 3.5 Flash (Google). Claude 4.8 Opus (Anthropic) on Professional and Agentic. See Plans & Pricing.
Mistral Small 4 and Gemma 4 are now generally available, having been preview-only. See Plans & Pricing.
New preview model in the Test catalog: GLM 5.2 — free on any active plan. See Test / Preview Models.

Models across the GPT-4.1, GPT-4o, o-series, Qwen3, Gemini 2.5, Gemini 3 and Claude Sonnet / Opus families are scheduled for retirement on 2026-08-01, along with Mistral Small 3 and GPT Image 1. See Scheduled for Retirement for the table and replacements.

Archived snapshot: v1.1.0.

New top-level Models section with a comparison page covering every hosted model — context window, pricing, cloud, modalities, plan availability, and OpenAI-compatible endpoint reference. Image-capable models also surface on the dedicated Vision page via a capability filter.
Changelog page (you are reading it).
Two new preview models in the Test catalog: Mistral Small 4 (Mistral-Small-4-119B-2603-Preview) and Gemma 4 (gemma-4-31B-it-FP8-preview). See rate limits for the preview-model policy.

Fine-Tuning API documentation. Requests to /guides/fine-tuning now redirect to the optional services. Superseded: fine-tuning is offered as an optional service on request — see § 3.4.2 of the Service Description. The self-service API documentation remains withdrawn.

Archived snapshot: v1.0.0 — the initial released state of the docs prior to the changelog being introduced.