Documentation Index
Fetch the complete documentation index at: https://docs.laozhang.ai/llms.txt
Use this file to discover all available pages before exploring further.
Current Model Recommendations (Updated May 2026)
LaoZhang API supports 200+ mainstream AI models. This page provides detailed model information, pricing, and usage guidance. Covering the latest models including GPT-5.5, Claude Opus 4.7, Claude Sonnet 4.6, Gemini 3.1, and Veo 3.1.
Enterprise-Grade Professional AI Model API Gateway
All models are sourced directly from official providers with competitive pricing, pay-as-you-go billing, and long-term reliable service.
🔥 Currently Recommended Models
Below are the currently available popular models. For the complete model list and real-time pricing, visit LaoZhang API Console Pricing Page.
Model Categories
🤖 OpenAI Series
GPT-5.5 Series (Latest) 🔥
| Model Name | Model ID | Context | Features | Recommended Use |
|---|
| GPT-5.5 ⭐⭐ | gpt-5.5 | 1M | OpenAI’s latest flagship model | Professional tasks, complex coding, enterprise |
GPT-5.1 Series (November 2025) 🔥
| Model Name | Model ID | Context | Features | Recommended Use |
|---|
| GPT-5.1 ⭐⭐ | gpt-5.1 | 128K | Strong performance, balanced | General advanced tasks |
| GPT-5.1-Codex ⭐⭐ | gpt-5.1-codex | 128K | Coding specialized | Programming development |
| GPT-5.1-Codex High ⭐ | gpt-5.1-codex-high | 128K | High performance coding | Complex coding tasks |
| GPT-5.1-Codex Mini | gpt-5.1-codex-mini | 128K | Lightweight coding | Quick coding, completion |
GPT-5 Series (August 2025)
| Model Name | Model ID | Context | Features | Recommended Use |
|---|
| GPT-5 | gpt-5 | 128K | First gen GPT-5 | General tasks |
| GPT-5 Pro | gpt-5-pro | 128K | Professional version | Enterprise applications |
| GPT-5 Mini | gpt-5-mini | 128K | Lightweight efficient | Cost-sensitive scenarios |
| GPT-5 Nano | gpt-5-nano | 128K | Ultra-lightweight | Batch processing |
Reasoning Models
| Model Name | Model ID | Context | Features | Recommended Use |
|---|
| o3-pro ⭐⭐ | o3-pro | 200K | Strongest reasoning | Top-tier reasoning |
| o3 ⭐ | o3 | 200K | Reasoning model | Complex reasoning |
| o4-mini ⭐⭐ | o4-mini | 200K | Lightweight reasoning | Programming tasks |
GPT-4 Series
| Model Name | Model ID | Context | Features | Recommended Use |
|---|
| GPT-4.1 ⭐ | gpt-4.1 | 128K | Fast speed | General applications |
| GPT-4.1 Mini | gpt-4.1-mini | 128K | Affordable lightweight | Cost-sensitive |
| GPT-4.1 Nano | gpt-4.1-nano | 128K | Ultra-low-cost | High-volume |
| GPT-4o | gpt-4o | 128K | Balanced multimodal | General scenarios |
| GPT-4o Mini | gpt-4o-mini | 128K | Lightweight fast | Quick responses |
| GPT-4o Mini | gpt-4o-mini | 128K | Lightweight, fast, compatible | Daily conversations, batch tasks |
Image Generation
| Model Name | Model ID | Features | Recommended Use |
|---|
| GPT-Image-1.5 ⭐⭐ | gpt-image-1.5 | Latest version, higher quality | Professional design |
| GPT-Image-1 ⭐ | gpt-image-1 | High cost-performance | General image generation |
| GPT-Image-1 Mini | gpt-image-1-mini | Lightweight fast | Quick generation |
| Flux Kontext Max ⭐⭐ | flux-kontext-max | Highest quality | Professional design |
| Flux Kontext Pro ⭐ | flux-kontext-pro | Professional quality | Commercial design |
| DALL·E 3 | dall-e-3 | Classic generation | Standard tasks |
Video Generation
| Model Name | Model ID | Features | Recommended Use |
|---|
| Sora 2 Pro ⭐ | sora-2-pro (Async API only) | HD video ($0.8/call) | High-quality video |
| Sora 2 Character ⭐ | sora-2-character | Character generation | Character animation |
| Veo 3.1 ⭐⭐ | veo-3.1 | Latest version, improved | Standard video |
| Veo 3.1 Fast | veo-3.1-fast | Quick version | Fast prototyping |
| Veo 3.1 FL | veo-3.1-fl | Frame-level control | Fine control |
| Veo 3 Pro ⭐ | veo3-pro | Highest quality | Professional video |
Image Generation Models
| Model Name | Model ID | Supported Sizes | Features | Pricing |
|---|
| GPT-Image-1 ⭐ | gpt-image-1 | 1024×1024 etc. | High-value image generation | See documentation |
| Sora Image | sora_image | Multiple sizes | Reverse-engineered model | See documentation |
| GPT-4o Image | gpt-4o-image | Multiple sizes | Conversational image generation | See documentation |
| DALL·E 3 | dall-e-3 | 1024×1024 etc. | Classic image generation | Billed by size |
Image Generation Testing Tool
Visit imagen.laozhang.ai to experience various image generation models.Detailed documentation: 🎭 Claude Series (Anthropic)
Claude Opus 4.7 (Most Intelligent) 🔥
| Model Name | Model ID | Context | Features | Recommended Use |
|---|
| Claude Opus 4.7 ⭐⭐ | claude-opus-4-7 | 1M | Anthropic’s most capable current model | Top tasks, enterprise, coding agents |
| Claude Opus 4.7 Thinking ⭐⭐ | claude-opus-4-7-thinking | 1M | Deep reasoning mode | Complex reasoning and long workflows |
Claude Sonnet / Haiku Series
| Model Name | Model ID | Context | Features | Recommended Use |
|---|
| Claude Sonnet 4.6 ⭐⭐ | claude-sonnet-4-6 | 1M | Balanced speed, cost, and intelligence | Code generation, analysis, long text |
| Claude Sonnet 4.6 Thinking ⭐ | claude-sonnet-4-6-thinking | 1M | Reasoning mode | Complex reasoning |
| Claude Haiku 4.5 | claude-haiku-4-5 | 200K | Lightweight fast | Quick response |
| Model Name | Model ID | Context | Features | Recommended Use |
|---|
| Claude Opus 4.5 | claude-opus-4-5 | 200K | Classic high-performance version | High-quality analysis and coding |
| Claude Opus 4.5 Thinking | claude-opus-4-5-thinking | 200K | Chain-of-thought mode | Deep analysis |
| Claude Sonnet 4.5 | claude-sonnet-4-5 | 200K | Stable coding version | Daily development |
Claude 4 Series (May 2025)
| Model Name | Model ID | Context | Features | Recommended Use |
|---|
| Claude 4 Sonnet ⭐ | claude-sonnet-4 | 200K | Stable version | Code generation |
| Claude 4.1 Opus | claude-opus-4-1 | 200K | Enhanced version | High-demand tasks |
Claude 3.7 Series (February 2025)
| Model Name | Model ID | Context | Features | Recommended Use |
|---|
| Claude 3.7 Sonnet | claude-3-7-sonnet-latest | 200K | Legacy compatibility | General scenarios |
Claude 3.5 Series (Classic)
| Model Name | Model ID | Context | Features | Recommended Use |
|---|
| Claude 3.5 Sonnet | claude-3-5-sonnet-latest | 200K | Balanced performance | General scenarios |
| Claude 3.5 Haiku | claude-3-5-haiku-latest | 200K | Lightweight fast | Daily tasks |
🌟 Google Gemini Series
Gemini 3.1 / 3 Series (Latest) 🔥
| Model Name | Model ID | Context | Features | Recommended Use |
|---|
| Gemini 3.1 Pro Preview ⭐⭐ | gemini-3.1-pro-preview | 1M | Latest Pro preview with strong tool and agent capabilities | Advanced tasks, long text, coding agents |
| Gemini 3.1 Pro Preview Custom Tools | gemini-3.1-pro-preview-customtools | 1M | Optimized for custom tools and bash workflows | Agent tool use |
| Gemini 3 Flash Preview ⭐⭐ | gemini-3-flash-preview | 1M | Fast multimodal model | Quick response |
| Gemini 3.1 Flash-Lite Preview | gemini-3.1-flash-lite-preview | 1M | Lighter fast model | High-volume, lower-cost tasks |
| Gemini 3 Pro Image Preview ⭐ | gemini-3-pro-image-preview | - | Image generation | Image tasks |
Gemini 2.5 Series (2025)
| Model Name | Model ID | Context | Features | Recommended Use |
|---|
| Gemini 2.5 Pro ⭐ | gemini-2.5-pro | 2M | Coding advantage, multimodal | Production env |
| Gemini 2.5 Flash ⭐ | gemini-2.5-flash | 1M | Fast speed, low cost | Quick response |
| Gemini 2.5 Flash Image | gemini-2.5-flash-image | - | Image generation | Image tasks |
| Gemini 2.5 Computer Use | gemini-2.5-computer-use-preview-10-2025 | - | Computer use preview | AI agents, automation |
Gemini 2.0 Series
| Model Name | Model ID | Context | Features | Recommended Use |
|---|
| Gemini 2.0 Flash | gemini-2.0-flash-001 | 1M | Experimental | Early access |
Gemini 1.5 Series (Historical Compatibility)
Gemini 1.5 is no longer recommended for new integrations. Prefer gemini-3.1-pro-preview, gemini-3-flash-preview, or gemini-2.5-pro.
🚀 xAI Grok Series
| Model Name | Model ID | Features | Recommended Use |
|---|
| Grok 4 ⭐ | grok-4 / grok-4-0709 | Latest official version | General tasks |
| Grok 4 Fast Reasoning | grok-4-fast-reasoning | Fast reasoning | Quick reasoning |
| Grok 4 Fast | grok-4-fast | Speed optimized | Quick response |
| Grok 3 | grok-3-latest | Stable version | Daily use |
| Grok 3 DeepSearch | grok-3-deepsearch | Deep search, per-call | Web search |
| Grok 3 Mini | grok-3-mini-latest | Small with reasoning | Lightweight tasks |
🔍 DeepSeek Series
| Model Name | Model ID | Context | Features | Recommended Use |
|---|
| DeepSeek V3.2 Exp ⭐ | deepseek-v3.2-exp | 128K | Experimental latest | Test new features |
| DeepSeek V3.1 ⭐ | deepseek-v3-1-250821 | 128K | Think/Non-Think dual mode | Reasoning, programming |
| DeepSeek V3 | deepseek-v3 | 128K | Strong capability | General scenarios |
| DeepSeek R1 | deepseek-r1 / deepseek-r1-0528 | 64K | Reasoning model | Math, reasoning |
🐘 Chinese Models
Alibaba Qwen QwQ Series (Reasoning) 🔥
| Model Name | Model ID | Context | Features | Recommended Use |
|---|
| QwQ Plus ⭐⭐ | qwq-plus / qwq-plus-latest | 32K | Latest reasoning model | Complex reasoning |
| QwQ 72B Preview | qwq-72b-preview | 32K | Preview version | Test features |
Alibaba Qwen Coder 3 Series (Coding) 🔥
| Model Name | Model ID | Parameters | Features | Recommended Use |
|---|
| Qwen3 Coder 480B ⭐⭐ | qwen3-coder-480b-a35b-instruct | 480B (35B active) | Large coding model | Complex coding |
| Qwen3 Coder Plus ⭐ | qwen3-coder-plus | - | Enhanced coding | Standard coding |
Other Chinese Models
| Model Name | Model ID | Context | Features | |
|---|
| Kimi K2 Official ⭐ | kimi-k2-250711 | 200K | Stable, reliable | |
| Llama 4 Maverick ⭐ | llama-4-maverick | - | Latest open source | |
| SeeKDream 4.5 ⭐⭐ | seedream-4-5-251128 | - | Video/image generation | |
| Doubao 1.5 Vision Pro ⭐ | Doubao-1.5-vision-pro-32k | 32K | Multimodal | |
| Gemma 3 12B | gemma-3-12b | - | Google open source | |
| DeepSeek V3 | deepseek-v3 | 128K | Strong overall capabilities | General scenarios |
| DeepSeek Chat | deepseek-chat | 128K | Chat-optimized version | Chat applications |
| DeepSeek Coder | deepseek-coder | 128K | Code-specialized model | Programming tasks |
🐘 Chinese Language Models
Alibaba Qwen Series
| Model Name | Model ID | Context Length | Features |
|---|
| Qwen Max | qwen-max | 32K | Strongest version |
| Qwen Plus | qwen-plus | 32K | Enhanced version |
| Qwen Turbo | qwen-turbo | 32K | Fast version |
| Qwen 2.5 | qwen-2.5-72b | 128K | Open-source large model |
Moonshot Kimi Series
| Model Name | Model ID | Context Length | Features |
|---|
| Kimi K2 Official ⭐ | kimi-k2-250711 | 200K | Official partnership, strong stability |
Other Chinese Models
| Model Name | Model ID | Features |
|---|
| ERNIE 4.0 | ernie-4.0 | Baidu’s latest model |
| GLM-4 | glm-4 | Tsinghua-based model |
| Spark 3.5 | spark-3.5 | iFlytek’s latest version |
| MiniMax | minimax-abab6.5 | Strong overall capabilities |
Billing Method
- Pay-as-you-go: Charged based on actual token usage
- No minimum charge: Use what you pay for, balance never expires
- Real-time deduction: Fees deducted immediately after each call
Pricing Advantage
- Direct from official sources with competitive rates
- Volume discounts available - contact support for bulk pricing
- New users receive $0.5 free trial credit
View Real-time Pricing
Visit LaoZhang API Console Pricing Page to view the latest prices for all models.
🛠️ Usage Recommendations
Model Selection Guide
Programming Development
- Primary: GPT-5.5, Claude Opus 4.7, Claude Sonnet 4.6, Qwen3 Coder 480B
- Alternatives: GPT-5.1-Codex High, DeepSeek V3.1, Gemini 3.1 Pro Preview, o4-mini
Content Creation
- Primary: GPT-5.5, Claude Opus 4.7, Claude Sonnet 4.6
- Alternatives: GPT-5.1, Gemini 3.1 Pro Preview, Claude Opus 4.7, Kimi K2 Official
Quick Response
- Primary: Gemini 3 Flash Preview, Claude Haiku 4.5, Grok 4 Fast
- Alternatives: Gemini 2.5 Flash, GPT-4.1 Nano, GPT-4o Mini
Image Generation
- Stability priority: GPT-Image-1
- Quality priority: DALL·E 3
- Cost-effective: Sora Image, GPT-4o Image
Long Text Processing
- Primary: Gemini 3.1 Pro Preview, Claude Opus 4.7
- Alternatives: Claude Sonnet 4.6, GPT-5.5, Gemini 2.5 Pro
Cost Optimization Tips
- Tiered Usage: Use cheaper models for simple tasks, premium models for complex ones
- Test and Optimize: Test with smaller models first, then scale up as needed
- Batch Processing: Choose Nano or Mini versions for large volumes of similar tasks
- Cache and Reuse: Cache results for repeated queries
Model list is continuously updated. We promptly add newly released excellent models. For specific model needs or bulk requirements, please contact support.
