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:- 08/26 DeepSeek V3.1 Mixed reasoning mode launched, supports Think/Non-Think dual modes
- 08/25 Kimi K2 Official kimi-k2-250711 integrated, Volcano Engine official partnership version, stable and reliable
- 08/08 GPT-5 Full Series Officially launched, same price as official site, about 20% off with top-up bonus + exchange rate advantage
- 08/07 Claude Opus 4.1 Performance upgrade launched, increased capacity without price increase
- 08/06 OpenAI Open Source Models gpt-oss-120b and gpt-oss-20b launched, priced lower than DeepSeek R1/V3
- GPT-4.5-Preview Model discontinued, please switch to GPT-4.1
- Kimi K2 Model launched, 30% off official price
- Claude 20% price reduction across the board
- O3 Model 80% price reduction, largest price drop in history
📅 August 2025
🧠 DeepSeek V3.1 Mixed Reasoning Mode Launch
August 26, 2025DeepSeek V3.1-250821 - Revolutionary Mixed Reasoning Mode
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🚀 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
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🚀 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
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, 2025Claude Opus 4.1 - Code Capability Breakthrough
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🚀 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
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, 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 (August 2025)
- 🧠 Innovation Breakthrough: DeepSeek V3.1 mixed reasoning mode, first large model supporting Think/Non-Think dual modes
- 🤖 Official Partnership: Kimi K2-250711 official version launched, Volcano Engine official authorization, significantly improved stability
- 🚀 New Models: GPT-5 full series officially launched, 20% off with same official price
- 🎨 Performance Upgrade: Claude Opus 4.1 performance upgrade, increased capacity without price increase
- 🎯 Major Release: OpenAI’s first open source large models (gpt-oss-120b, gpt-oss-20b)
- 💸 Price Advantage: New model pricing lower than DeepSeek R1/V3
- 🚀 Performance Breakthrough: Open source models reaching commercial-grade performance
- 🌐 Ecosystem Expansion: Supporting local deployment and edge computing
Historical Milestones
- August 2025: DeepSeek V3.1 mixed reasoning mode launched; Kimi K2 official version integrated; GPT-5 full series launched; First integration of OpenAI open source models; Claude Opus 4.1 performance upgrade released
- 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.