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

# Announcements

> Latest AI model releases: Claude Opus 4.7, GPT-5.2, Gemini 3 available on day one. Price updates, feature releases, and special offers. Subscribe for AI model news.

## 📅 April 2026

### 🧠 Claude Opus 4.7 / Thinking Now Available

**April 17, 2026**

##

**Claude Opus 4.7 is now available on LaoZhang API**

* 🚀 **New Models**: `claude-opus-4-7` / `claude-opus-4-7-thinking`
* 🌟 **Launch Details**:
  * Standard and Thinking variants are now available
  * Works directly through the OpenAI-compatible API by switching the model name
  * Suitable for complex reasoning, coding agents, and long-context tasks
* 📝 **Documentation Sync**:
  * Announcement page has been updated
  * Related recommendation pages will be updated to the latest model version gradually

To try the latest Claude high-end model, switch the `model` field in your existing code or dashboard configuration to either of the model names above.

### 💰 Nano Banana Pricing Update Notice

**April 13, 2026**

##

**New pricing is now live for Nano Banana Pro and Nano Banana2**

* 🎯 **Affected models**:
  * `gemini-3-pro-image-preview` (Nano Banana Pro)
  * `gemini-3.1-flash-image-preview` (Nano Banana2)
* 💵 **Price changes**:
  * Nano Banana Pro: **0.05/request→0.05/request → 0.05/request→0.09/request**
  * Nano Banana2: **0.045/request→0.045/request → 0.045/request→0.055/request**
* 📝 **What was updated**:
  * Documentation and pricing pages have been synced
  * Comparison pages, FAQs, and recommendations now reflect the new pricing
  * The `$0.5` signup credit can still be used toward API usage

This update is effective immediately. For bulk purchasing or stable large-scale usage, contact Telegram [@laozhang\_cn](https://t.me/laozhang_cn).

## 📅 January 2026

### 📚 Documentation Update for 2026

**January 7, 2026**

##

**Documentation Optimization - 2026 New Year Update**

* 📅 **Year Updates**: All model recommendation pages updated to 2026
* 🔄 **Model Reference Updates**: Default models in code examples updated to latest recommendations
* ⚠️ **Retirement Notice**: Claude 3 Opus officially retired on January 5, 2026
* 📝 **Config Updates**: Claude Code configuration method updated to settings.json

New year, new beginnings! LaoZhang API continues to provide you with the best AI services!

## 📅 December 2025

### 🚀 GPT-5.2 Stunning Release

**December 11, 2025**

##

**GPT-5.2 - OpenAI’s Annual Flagship Model**

* 🚀 **New Model**: `gpt-5.2` / `gpt-5.2-2025-12-11`
* 💰 **Price Advantage**:
  * Same price as OpenAI official
  * Top-up bonus + exchange rate advantage, about **20% off**
* 🌟 **Core Features**:
  * **30%** less hallucination rate, significantly improved accuracy
  * Supports Instant/Thinking/Pro three modes
  * 128K ultra-long context window
  * Excellent performance in professional work tasks

GPT-5.2 is OpenAI’s 2025 year-end masterpiece, particularly outstanding in professional work scenarios. Recommended for enterprise users requiring high accuracy.

## 📅 November 2025

### 🧠 Claude Opus 4.5 Most Intelligent Model Release

**November 24, 2025**

##

**Claude Opus 4.5 - Anthropic’s Strongest Brain**

* 🚀 **New Model**: `claude-opus-4-5-20251101` / `claude-opus-4-5-20251101-thinking`
* 💰 **Price Advantage**:
  * Same price as Anthropic official
  * Better value with top-up bonus
* 🌟 **Core Features**:
  * Anthropic’s most intelligent model to date
  * Supports **effort parameter** to control response token count
  * Top-tier in coding, agents, computer use capabilities
  * 200K ultra-long context window
  * Supports Thinking chain-of-thought reasoning mode

Claude Opus 4.5 excels in complex reasoning and long document processing, the first choice for enterprise-grade challenging tasks.

### 🌟 Gemini 3 Series Major Launch

**November 18, 2025**

##

**Gemini 3 Pro/Flash - Google’s Next-Gen AI**

* 🚀 **New Models**:
  * `gemini-3-pro-preview` - Flagship version, 2M ultra-long context
  * `gemini-3-flash-preview` - Lightning version, new default model for Gemini app
  * `gemini-3-pro-image-preview` - Image generation specialized
* 💰 **Price Advantage**:
  * Same price as Google official
  * Stacking top-up bonus offers
* 🌟 **Core Features**:
  * **Major capability upgrade** compared to Gemini 2.5
  * Pro version supports 2M token ultra-long context
  * Flash version provides lightning-fast response speed
  * Supports Thinking/NoThinking dual modes

Gemini 3 series is Google’s latest generation model, now the new default model for Gemini app. Recommended for long text processing and fast response scenarios.

### 📦 GPT-5.1 Series Launch

**November 13, 2025**

##

**GPT-5.1 Series - Coding Capability Upgraded**

* 🚀 **New Models**:
  * `gpt-5.1` / `gpt-5.1-2025-11-13` - Main version
  * `gpt-5.1-codex` series - Coding specialized (High/Medium/Mini)
* 🌟 **Core Features**:
  * Strong comprehensive capability, balanced cost-performance
  * Codex series provides multi-tier coding model selection
  * 128K ultra-long context window

GPT-5.1-Codex series is specially optimized for coding scenarios, with corresponding versions from complex architecture design to quick code completion.

## 📅 October 2025

### ⚡ Claude Haiku 4.5 Fast Version Launch

**October 15, 2025**

##

**Claude Haiku 4.5 - Speed and Cost Optimized**

* 🚀 **New Model**: `claude-haiku-4-5-20251001` / `claude-haiku-4-5-20251001-thinking`
* 💰 **Price Advantage**:
  * Fast response, lower cost
  * Suitable for large-scale concurrent calls
* 🌟 **Core Features**:
  * Fast response, extremely low latency
  * Supports Thinking reasoning mode
  * 200K context window
  * First choice for daily quick tasks

Claude Haiku 4.5 is the best choice for cost-sensitive applications, significantly reducing costs while maintaining high-quality output.

## 📅 September 2025

### 💻 Claude Sonnet 4.5 Coding Champion Launch

**September 29, 2025**

##

**Claude Sonnet 4.5 - Developer’s First Choice**

* 🚀 **New Model**: `claude-sonnet-4-5-20250929` / `claude-sonnet-4-5-20250929-thinking`
* 💰 **Price Advantage**:
  * Balanced performance and cost
  * Best value for coding scenarios
* 🌟 **Core Features**:
  * **Top coding capability**, leading code generation quality
  * Suitable as AI agent’s brain
  * Outstanding frontend and UI development ability
  * Supports Thinking chain-of-thought reasoning

Claude Sonnet 4.5 performs excellently in coding scenarios, particularly suitable as backend model for programming tools like Cursor, Cline.

## 📅 August 2025

### 🧠 DeepSeek V3.1 Mixed Reasoning Mode Launch

**August 26, 2025**

##

**DeepSeek V3.1-250821 - Revolutionary Mixed Reasoning Mode**

* 🚀 **New Model**: `deepseek-v3-1-250821`
* 💰 **Price Advantage**:
  * Prompt price: 0.50/1Mtokens(Official0.50 / 1M tokens (Official 0.50/1Mtokens(Official0.56)
  * Completion price: 1.50/1Mtokens(Official1.50 / 1M tokens (Official 1.50/1Mtokens(Official1.68)
  * Save about **11%** compared to official prices
  * Flexible billing for dual mode calls
* 🧠 **Core Features**:
  * **Think Mode**: Deep reasoning with full thought process display
  * **Non-Think Mode**: Quick response for daily tasks
  * 128K ultra-long context window
  * Anthropic API format compatible
* 🌟 **Technical Highlights**:
  * 840 billion token continuous pre-training optimization
  * New tokenizer with improved encoding efficiency
  * Beta Function Calling tool invocation support
  * Enhanced agent and tool usage capabilities
* ⚡ **Mode Switching**:
  * `deepseek-chat` - Non-Think fast mode
  * `deepseek-reasoner` - Think reasoning mode
  * Official site supports “DeepThink” one-click switch

DeepSeek V3.1 is the first large model supporting mixed reasoning mode, allowing users to flexibly choose reasoning depth based on task complexity, balancing efficiency and quality.

### 🤖 Kimi K2 Official Version Integration

**August 25, 2025**

##

**Kimi K2-250711 - Volcano Engine Official Partnership Version**

* 🚀 **New Model**: `kimi-k2-250711`
* 🔄 **Replaced Model**: Replaces `kimi-k2-0711-preview` preview version
* 🤝 **Official Partnership**:
  * Volcano Engine official authorized partnership version
  * Direct connection to official interface, significantly improved stability
  * Goodbye to preview version instability
* 💰 **Price Advantage**:
  * Continues to maintain 15% lower than official price advantage
  * Combined with top-up bonus, equivalent to **30% off**
  * Official version performance at preview version price
* 🌟 **Core Features**:
  * Excellent Chinese understanding and generation capabilities
  * Strong long text processing ability
  * More stable and reliable API responses
  * Fully compatible with original calling methods

Kimi K2-250711 is the official version in partnership with Volcano Engine, with significant improvements in stability and performance compared to preview version. Users are recommended to switch in time.

### 🚀 GPT-5 Full Series Launch

**August 8, 2025**

##

**GPT-5 Full Series Official Release - OpenAI’s Strongest Model**

* 🎯 **Full Series Models**:
  * `gpt-5` - Flagship version
  * `gpt-5-2025-08-07` - Specific version
  * `gpt-5-chat-latest` - Latest conversation version
  * `gpt-5-mini` / `gpt-5-mini-2025-08-07` - Lightweight version
  * `gpt-5-nano` / `gpt-5-nano-2025-08-07` - Ultra-lightweight version
* 💰 **Price Advantage**:
  * Exactly same price as OpenAI official site
  * Top-up bonus + exchange rate advantage, about **20% off**
  * Prompt price: 1.25−1.25 - 1.25−0.05 / 1M tokens
  * Completion price: 10.00−10.00 - 10.00−0.40 / 1M tokens
* 🛠️ **Technical Features**:
  * Supports official documentation `/v1/responses` endpoint calls
  * Temperature parameter must be set to 1 or not passed (official restriction)
  * Use `max_completion_tokens` instead of `max_tokens`
  * `gpt-5-chat-latest` called through `/v1/chat/completions`
* ⚡ **Performance Highlights**:
  * Comprehensive reasoning capabilities surpassing GPT-4 series
  * Stronger context understanding and long text processing
  * Significantly improved code generation quality
  * Multilingual capabilities reaching new heights

**Important**: GPT-5 series models have specific parameter requirements. Please configure according to the above technical features to ensure normal calls.

### 🎨 Claude Opus 4.1 Performance Upgrade Launch

**August 7, 2025**

##

**Claude Opus 4.1 - Code Capability Breakthrough**

* 🚀 **New Model**: `claude-opus-4-1-20250805`
* 💰 **Increased Capacity Without Price Increase**:
  * Price exactly same as Anthropic official site
  * Combined with top-up bonus, better value
  * Same price, stronger performance
* 🌟 **Core Upgrades**:
  * SWE-bench Verified reaches 74.5%, significantly improved coding ability
  * Compared to Opus 4, reasoning ability and code generation quality greatly enhanced
  * Maintains 200K ultra-long context window
  * Further optimized multilingual understanding and generation
* ⚡ **Performance Highlights**:
  * Code debugging and fixing capabilities leading the industry
  * Complex reasoning task accuracy improved by 15%+
  * API response speed maintains industry-leading level
  * Perfectly compatible with all Claude series features

Claude Opus 4.1 is an iterative optimization based on Opus 4, maintaining the original powerful capabilities while making special optimizations for code generation and reasoning tasks.

### 🎯 OpenAI Open Source Models Official Launch

**August 6, 2025**

##

**OpenAI’s First Open Source Large Model Release**

* 🚀 **New Models**:
  * `gpt-oss-120b` - 117 billion parameters, comparable to o4-mini performance
  * `gpt-oss-20b` - 21 billion parameters, can run on edge devices
* 💰 **Price Advantage**:
  * Priced significantly lower than DeepSeek R1 and V3
  * Combined with top-up bonus, extremely cost-effective
  * Enterprise usage costs significantly reduced
* 🌟 **Core Features**:
  * 128K ultra-long context window
  * Supports low/medium/high three-level reasoning modes
  * MoE architecture, extremely efficient inference
  * Apache 2.0 open source license
* ⚡ **Performance Highlights**:
  * gpt-oss-120b only needs a single 80GB GPU to run
  * gpt-oss-20b supports deployment on 16GB memory devices
  * Excellent performance in coding, math, tool calling tasks

This is OpenAI’s first open source model release since GPT-2, marking an important milestone in the AI open ecosystem.

## 📅 July 2025

### ⚠️ GPT-4.5-Preview Model Discontinued

**July 14, 2025**

##

**GPT-4.5-Preview Officially Discontinued**

* 📌 Discontinued model: `gpt-4.5-preview`
* 🔄 Recommended alternative: `gpt-4.1`
* 📅 Effective date: July 14, 2025
* 📖 Official announcement: [OpenAI Deprecations](https://platform.openai.com/docs/deprecations)

Developers please update code as soon as possible, replace `gpt-4.5-preview` with `gpt-4.1` to avoid service interruption.

### 🚀 Kimi K2 Model Launch

**July 15, 2025**

##

**Kimi K2 Preview Version Launch**

* 📌 Model name: `kimi-k2-0711-preview`
* 💰 Price advantage: 15% lower than official price
* 🎁 Combined with top-up bonus, equivalent to **30% off**
* 🌟 Features: Better Chinese understanding and generation capabilities

### 🤖 Grok-4 Model Launch

**July 12, 2025**

##

**xAI Grok-4 Official Integration**

* 📌 Call name: `grok-4`
* 🧠 Special feature: Built-in reasoning mode
* 📖 Recommended to check official documentation for detailed usage

### 💸 Claude 20% Price Reduction

**July 8, 2025**

##

**Claude Models Significant Discount**

* 🎉 All series models reduced by **20%**
* ✅ No speed limit, no account ban
* 💱 Exchange rate advantage + top-up bonus
* 🚀 Providing more economical AI services to users

## 📅 June 2025

### 🌟 Gemini 2.5 Official Release

**June 18, 2025**

##

**Gemini 2.5 Series All-new Upgrade**

* 📌 Recommended models: `gemini-2.5-pro` / `gemini-2.5-flash`
* ⚡ More stable performance, recommended to replace preview or exp versions
* 🎯 2M ultra-long context support

### 🎊 O3 Model Massive 80% Price Reduction

**June 13, 2025**

##

**O3 Model Largest Price Drop in History**

* 💥 Price reduction: **80%**
* 💰 New price:
  * Input: \$3/M Tokens
  * Output: \$12/M Tokens
* 🆕 New `o3-pro` model added
* 📍 Only callable via `/v1/responses` endpoint

### 🖼️ GPT-Image-1 Price Reduction

**June 7, 2025**

##

**More Affordable Image Generation**

* 📌 Model: `gpt-image-1`
* 💸 Significant price reduction, providing more competitive image generation services
* 🎨 Reduced costs while maintaining high-quality output

## 🔔 Subscribe to Updates

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## View Pricing

Check latest pricing for all models

## 📊 Update Statistics

### This Month’s Highlights (April 2026)

* 🧠 New Model Launch: Claude Opus 4.7 / Thinking is now available
* 💰 Pricing Update: New pricing for Nano Banana Pro / Nano Banana2 is now in effect
* 📝 Docs Sync: Announcement page now reflects the latest model and pricing updates

### Historical Milestones

* April 2026: Claude Opus 4.7 / Thinking launched; Nano Banana series pricing updated
* January 2026: Documentation fully updated for new year; Claude 3 Opus officially retired
* December 2025: GPT-5.2 stunning release, 30% less hallucination
* November 2025: Claude Opus 4.5 most intelligent model released; Gemini 3 series launched; GPT-5.1 series launched
* October 2025: Claude Haiku 4.5 fast version launched
* September 2025: Claude Sonnet 4.5 coding champion launched
* August 2025: DeepSeek V3.1 mixed reasoning mode; Kimi K2 official version; GPT-5 full series; OpenAI open source models
* July 2025: Surpassed 200+ model support
* June 2025: O3 model largest price reduction in history
* May 2025: Gemini 2.5 series support

***

**Update Frequency**: This page is updated regularly. Recommended to bookmark and check frequently. All price adjustments and model updates will be announced here first.

**Tip**: New models usually have special offers during initial launch period. Recommended to try them out in time. We will also continuously optimize pricing strategies based on market feedback.