# AI Models & Engines

## Supported AI Models

### OpenAI GPT Models

| Model                      | Description                                                                                                  | Best For                                                                     | Key Features                                                                       |
| -------------------------- | ------------------------------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------- | ---------------------------------------------------------------------------------- |
| **GPT-5.2**                | OpenAI's flagship model for coding and agentic tasks. Latest in GPT-5 series with 400K token context window. | Professional knowledge work, complex coding tasks, agentic workflows         | 400K context window, 128K max output, extended reasoning, GDPval benchmark leader. |
| **GPT-5**                  | Full GPT-5 model with strong general capabilities across diverse tasks.                                      | Broad task coverage including math, coding, science, and tool calling        | Strong reasoning, reliable tool use, comprehensive general intelligence            |
| **GPT-4.1**                | Smartest non-reasoning GPT model with balanced performance.                                                  | General-purpose tasks requiring high intelligence without extended reasoning | Broad capability across tasks, efficient for everyday use                          |
| **GPT-4.1 Mini**           | Smaller, faster version of GPT-4.1 optimized for cost-efficiency.                                            | High-volume applications where speed and cost matter                         | Faster responses, lower cost, good balance of capability and efficiency            |
| **GPT-4.1 Nano**           | Fastest and most cost-efficient version of GPT-4.1.                                                          | Lightweight tasks requiring quick responses at minimal cost                  | Maximum speed, minimum cost, suitable for simple queries                           |
| **GPT-4o Mini**            | Compact model optimized for speed and affordability.                                                         | Quick responses, lightweight automation, high-throughput scenarios           | Fast performance, cost-effective, good for everyday tasks                          |
| **GPT-4**                  | Previous generation flagship model.                                                                          | Legacy applications, general-purpose tasks                                   | Reliable performance across diverse tasks                                          |
| **GPT-4o**                 | Optimized variant of GPT-4 with enhanced efficiency.                                                         | Balanced performance for various applications                                | Good general capabilities with optimization focus                                  |
| **GPT-4-Turbo**            | High-performance variant of GPT-4.                                                                           | Tasks requiring enhanced speed                                               | Faster processing while maintaining GPT-4 quality                                  |
| **GPT-3.5 Turbo**          | Efficient model from GPT-3.5 family.                                                                         | Cost-effective basic tasks                                                   | Good performance-to-cost ratio                                                     |
| **GPT-3.5 Turbo Instruct** | Instruction-tuned variant of GPT-3.5 Turbo.                                                                  | Following specific instructions accurately                                   | Enhanced instruction-following capabilities                                        |

### OpenAI o-Series (Reasoning Models)

| Model       | Description                                                                                | Best For                                                              | Key Features                                                   |
| ----------- | ------------------------------------------------------------------------------------------ | --------------------------------------------------------------------- | -------------------------------------------------------------- |
| **o1**      | First reasoning model with internal chain-of-thought processing.                           | Complex reasoning, math, coding tasks requiring step-by-step thinking | Internal reasoning chains, deliberate problem-solving approach |
| **o4-mini** | Latest small reasoning model optimized for speed and cost-efficiency. Released April 2025. | Fast reasoning tasks in math, coding, and vision at high volume       | 200K context, 100K output, multimodal support                  |
| **o3**      | Advanced reasoning model with significant improvements over o1. Released April 2025.       | Complex multi-faceted analysis, visual tasks, programming challenges  | 200K context, agentic tool use, 20% fewer major errors than o1 |

### Anthropic Claude Models

| Model          | Description                                                                                         | Best For                                                                    | Key Features                                                              |
| -------------- | --------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------- | ------------------------------------------------------------------------- |
| **Haiku 4.5**  | Fastest and most cost-efficient Claude model with near-frontier performance. Released October 2025. | High-volume applications, real-time responsiveness, sub-agent orchestration | 200K context, 64K output, 73.3% SWE-bench score, 2x+ faster than Sonnet 4 |
| **Sonnet 4**   | Balanced model bridging speed and intelligence from Claude 4 family.                                | Complex reasoning without frontier costs, general-purpose tasks             | Strong reasoning, good coding capabilities, balanced performance          |
| **Sonnet 4.5** | Best coding model with state-of-the-art agentic capabilities. Released September 2025.              | Complex coding agents, autonomous workflows, computer use tasks             | 200K/1M context options                                                   |

***

### Quick Selection Guide

**For Professional Content Generation:**

* Complex writing and analysis: GPT-5.2
* Long-form content: Claude Sonnet 4.5
* High-volume text generation: Claude Haiku 4.5

**For Reasoning Tasks:**

* Complex reasoning: o3
* Fast reasoning at scale: o4-mini
* General reasoning: o1

**For Cost-Efficiency:**

* Lightweight tasks: GPT-4.1 Nano
* Fast responses: Claude Haiku 4.5 or GPT-4o Mini
* Budget-conscious: GPT-3.5 Turbo

**For Advanced Text Workflows:**

* Flagship intelligence: GPT-5.2 or Claude Sonnet 4.5
* Multi-step generation: Claude Haiku 4.5
* Research and synthesis: o3 or Claude Sonnet 4.5