> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ruapi.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Model updates

> RuAPI changelog: new models, retirements of outdated models and price changes. We announce in advance which models will be retired and what to use instead.

This page lists new models, retirements of outdated models and price changes. We announce retirements in advance: here, in our [Telegram channel](https://t.me/ruapi_ai), in a console announcement, and by email to everyone who has used the model in the last 30 days. Current prices are always on the [Pricing](https://www.ruapi.ai/pricing?utm_source=docs\&utm_campaign=en-changelog) page. This log starts in October 2026.

## Upcoming

<Update label="2026-11-01" description="Retiring deepseek-v4-flash">
  DeepSeek has retired this version — requests to the old name are already served by the new Flash. On **1 November 2026** the name `deepseek-v4-flash` will be turned off on RuAPI, and requests using it will return an error. Replacement: `deepseek-flash`, the same model at the same price. Change the model name in your client settings or code.
</Update>

<Update label="2026-11-30" description="Retirement of claude-sonnet-4-5-20250929">
  Anthropic is ending support for Claude Sonnet 4.5 ([source](https://platform.claude.com/docs/en/about-claude/model-deprecations)). On **30 November 2026**, `claude-sonnet-4-5-20250929` will be retired. Its replacement is `claude-sonnet-5-5` — just change the model name in your client settings or code.
</Update>

<Update label="2026-12-01" description="gemini-4-argon price change">
  Google's current price for `gemini-4-argon` is a limited-time offer that ends on 30 November 2026 ([source](https://ai.google.dev/gemini-api/docs/pricing)). From **1 December 2026**, Google doubles the price, and RuAPI's input, output and cache-read prices for `gemini-4-argon` double too. See the [pricing page](https://www.ruapi.ai/pricing?utm_source=docs\&utm_campaign=en-changelog) for current prices.
</Update>

## Changes

<Update label="2026-10-18" description="DeepSeek Flash: new version and the deepseek-flash name">
  **New name `deepseek-flash`.** On 17 October 2026 DeepSeek released a new version of Flash, DeepSeek-V4.1-Flash-1017 ([source](https://api-docs.deepseek.com/news/news261017)); in DeepSeek's API the model is called `deepseek-flash`. On RuAPI the name is available at the same price as `deepseek-v4.1-flash`, and requests to it are served by the new version. Use `deepseek-flash` in new projects.

  What improved, according to DeepSeek:

  * better at finishing whole projects from scratch, such as games and 3D scenes;
  * spends less time and fewer output tokens on tasks, so they cost less;
  * specifically optimized for DeepSeek Harness — if you use it, update to version 0.2.1-rc.1 or later.

  **Image input.** `deepseek-flash` accepts images, diagrams and screenshots — we tested it in both the OpenAI and the Claude format; `deepseek-v4-pro` is text-only. More in [Image input](/en/vision).

  **The earlier name `deepseek-v4.1-flash` keeps working** at the same price — it is served by the new version too, so there's no need to change your settings. The name `deepseek-v4-flash` will be turned off on 1 November 2026 (see "Upcoming" above) — replace it with `deepseek-flash`.
</Update>

<Update label="2026-10-14" description="Gemini 4 Argon">
  **New `gemini-4-argon`:** Google's flagship reasoning model. About 1.05M tokens of context and up to 65,536 output tokens per response; supports image input, function calling and streaming. The current price is Google's limited-time offer and doubles on 1 December 2026 (see "Upcoming" above). More in the [Gemini models](/en/gemini-api) overview.
</Update>

<Update label="2026-10-12" description="New Qwen models and pricing updates">
  **New Alibaba Qwen models:** `qwen3.8-max`, `qwen3.8-max-0902`, `qwen3.8-flash`, `qwen3.8-27b`, `qwen3.7-max`, `qwen3.7-plus`. For `qwen3.7-plus`, requests with more than 256K input tokens are billed at a higher rate, as on Alibaba Cloud.

  **`gemini-3.1-flash-lite-preview` retired:** Google shut down this preview model on 25 May 2026. For lightweight tasks, use `gemini-3.5-flash-lite` or `gemini-2.5-flash-lite`.

  **Pricing aligned with Google's rules:**

  * `gemini-2.5-pro` and `gemini-3.1-pro-preview`: requests with more than 200K input tokens are billed at a higher rate, as on Google. Shorter requests are unchanged.
  * `gemini-2.5-flash-lite`: the cache-read price now matches Google's official price.

  Full prices are on the [Pricing](https://www.ruapi.ai/pricing?utm_source=docs\&utm_campaign=en-changelog) page.
</Update>

<Update label="2026-10-09" description="Claude Haiku 5.5">
  **New model: `claude-haiku-5-5`**, a fast, low-cost Claude model. As on Anthropic, the price depends on prompt length: requests with more than 100K input tokens are billed at a higher rate. See the [Claude models](/en/claude-api) overview for details.
</Update>


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