Update Overview
Welcome to LaoZhang API’s changelog page. Here you can find our latest model releases, price adjustments, feature updates and other important information. We are committed to providing you with the highest quality and most cost-effective AI services.Subscribe to Updates: Follow our announcements to get first-hand information on new models and special offers, don’t miss any important updates!
🔥 Latest Updates
Recent important updates:- 01/07 Documentation Update Welcome 2026, comprehensive documentation and model reference updates
- 12/11 GPT-5.2 OpenAI’s latest flagship model launched, 30% less hallucination, professional work first choice
- 11/24 Claude Opus 4.5 Anthropic’s most intelligent model released, supports effort parameter
- 11/18 Gemini 3 Pro/Flash Google’s next-gen models launched, major capability upgrade
- 10/15 Claude Haiku 4.5 Fast flagship model launched, optimized for speed and cost
- 09/29 Claude Sonnet 4.5 Top coding model launched, developer’s first choice
- 08/26 DeepSeek V3.1 Mixed reasoning mode launched, supports Think/Non-Think dual modes
📅 January 2026
📚 Documentation Update for 2026
January 7, 2026Documentation 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, 2025GPT-5.2 - OpenAI’s Annual Flagship Model
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🚀 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, 2025Claude Opus 4.5 - Anthropic’s Strongest Brain
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🚀 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, 2025Gemini 3 Pro/Flash - Google’s Next-Gen AI
- 🚀 New Models:
gemini-3-pro-preview- Flagship version, 2M ultra-long contextgemini-3-flash-preview- Lightning version, new default model for Gemini appgemini-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, 2025GPT-5.1 Series - Coding Capability Upgraded
- 🚀 New Models:
gpt-5.1/gpt-5.1-2025-11-13- Main versiongpt-5.1-codexseries - 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, 2025Claude 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, 2025Claude 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, 2025DeepSeek V3.1-250821 - Revolutionary Mixed Reasoning Mode
-
🚀 New Model:
deepseek-v3-1-250821 -
💰 Price Advantage:
- Prompt price: 0.56)
- Completion price: 1.68)
- 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 modedeepseek-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, 2025Kimi K2-250711 - Volcano Engine Official Partnership Version
-
🚀 New Model:
kimi-k2-250711 -
🔄 Replaced Model: Replaces
kimi-k2-0711-previewpreview 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, 2025GPT-5 Full Series Official Release - OpenAI’s Strongest Model
- 🎯 Full Series Models:
gpt-5- Flagship versiongpt-5-2025-08-07- Specific versiongpt-5-chat-latest- Latest conversation versiongpt-5-mini/gpt-5-mini-2025-08-07- Lightweight versiongpt-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: 0.05 / 1M tokens
- Completion price: 0.40 / 1M tokens
- 🛠️ Technical Features:
- Supports official documentation
/v1/responsesendpoint calls - Temperature parameter must be set to 1 or not passed (official restriction)
- Use
max_completion_tokensinstead ofmax_tokens gpt-5-chat-latestcalled through/v1/chat/completions
- Supports official documentation
- ⚡ 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
🎨 Claude Opus 4.1 Performance Upgrade Launch
August 7, 2025Claude 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, 2025OpenAI’s First Open Source Large Model Release
- 🚀 New Models:
gpt-oss-120b- 117 billion parameters, comparable to o4-mini performancegpt-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, 2025GPT-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
🚀 Kimi K2 Model Launch
July 15, 2025Kimi 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, 2025xAI 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, 2025Claude 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, 2025Gemini 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, 2025O3 Model Largest Price Drop in History
- 💥 Price reduction: 80%
- 💰 New price:
- Input: $3/M Tokens
- Output: $12/M Tokens
- 🆕 New
o3-promodel added - 📍 Only callable via
/v1/responsesendpoint
🖼️ GPT-Image-1 Price Reduction
June 7, 2025More Affordable Image Generation
- 📌 Model:
gpt-image-1 - 💸 Significant price reduction, providing more competitive image generation services
- 🎨 Reduced costs while maintaining high-quality output
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📊 Update Statistics
This Month’s Highlights (January 2026)
- 📅 Documentation Update: Welcome 2026, all year references and model recommendations updated to latest
- ⚠️ Model Retirement: Claude 3 Opus (claude-3-opus-20240229) officially retired
- 🔄 Config Update: Claude Code configuration method updated to settings.json
Historical Milestones
- 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
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