Configure OpenAI GPT models in BraceKit.
OpenAI
OpenAI provides GPT models for general tasks and o-series models for complex reasoning. The GPT-5 series offers the latest capabilities with improved agentic performance.
Setup
1. Get an API Key
- Go to platform.openai.com/api-keys
- Sign in or create an account
- Click “Create new secret key”
- Copy the key (starts with
sk-)
2. Configure in BraceKit
- Open Settings
- Select AI Provider tab
- Click OpenAI in the provider grid
- Paste your API key in the API Key field
- Select a model from the dropdown
Settings are saved automatically as you type.
Settings are saved automatically when you make changes.
Available Models
GPT-5 Series (Recommended)
The latest generation with improved reasoning and agentic capabilities.
| Model | Best For | Context | Notes |
|---|---|---|---|
| gpt-5 | General purpose, coding, agentic tasks | 400K | Balanced performance |
| gpt-5-mini | Fast, cost-efficient for well-defined tasks | 400K | Cheaper, faster |
| gpt-5-nano | Simple tasks, high volume | 128K | Fastest, cheapest |
| gpt-5.1 | Enhanced reasoning with configurable effort | 400K | Higher reasoning |
| gpt-5.2 | Best for coding and agentic tasks | 400K | Latest capabilities |
| gpt-5.2-pro | Maximum precision and reasoning | 400K | Slowest, most expensive |
GPT-4.1 Series
Improved GPT-4 with better performance.
| Model | Best For | Context | Notes |
|---|---|---|---|
| gpt-4.1 | General purpose, reliable | 128K | Improved GPT-4 |
| gpt-4.1-mini | Fast, affordable alternative | 128K | Cheaper than GPT-5 |
GPT-4o Series
Multimodal models with vision support.
| Model | Best For | Context | Notes |
|---|---|---|---|
| gpt-4o | Multimodal (text + images) | 128K | Vision support |
| gpt-4o-mini | Fast multimodal tasks | 128K | Cheaper vision |
Reasoning Models (o-series)
Models that show their thinking process for complex problems.
| Model | Best For | Context | Notes |
|---|---|---|---|
| o1 | Complex reasoning, math, coding | 200K | Shows reasoning |
| o1-pro | Highest reasoning quality | 200K | Pro-level thinking |
| o3 | Advanced reasoning successor | 200K | Better than o1 |
| o3-mini | Fast reasoning tasks | 200K | Cheaper reasoning |
| o3-pro | Maximum reasoning depth | 200K | Best for hard problems |
| o4-mini | Efficient reasoning | 200K | Latest mini reasoning |
Note: Model availability depends on your OpenAI account tier and API access. Some models (like o3-pro, gpt-5.2-pro) may require higher tier access.
Features
Reasoning Models (o-series)
The o-series models (o1, o3, o4) show their reasoning process:
┌─────────────────────────────────────┐
│ 🧠 Thinking... ▾ │
├─────────────────────────────────────┤
│ Let me work through this step by │
│ step... │
└─────────────────────────────────────┘
Based on my analysis...This happens automatically with all o-series models. The thinking process helps with:
- Complex math and logic problems
- Multi-step coding tasks
- Detailed analysis and planning
Vision (Image Input)
All GPT-4o and GPT-5 models support image analysis:
- Attach an image to your message
- Ask a question about it
- The model analyzes and responds
Supported formats: PNG, JPEG, GIF, WebP
Function Calling
OpenAI models support tool calling for:
- MCP server tools
- Built-in tools (Google Search)
Streaming
All OpenAI models support streaming responses for real-time output.
Model Parameters
Configure in Settings → AI Provider under the Advanced section:
| Parameter | Range | Effect |
|---|---|---|
| Temperature | 0-2 | Higher = more creative, lower = more focused |
| Max Tokens | 1+ | Maximum response length |
| Top P | 0-1 | Controls diversity of word choices |
Note: OpenAI does not support Top K or Thinking Budget parameters. Those are available for Anthropic, Gemini, and Ollama providers.
Recommended Settings
| Use Case | Temperature | Top P | Max Tokens |
|---|---|---|---|
| Code generation | 0.3 | 0.9 | 4096 |
| General chat | 0.7 | 1.0 | Default |
| Creative writing | 1.0 | 1.0 | 8192 |
| Factual Q&A | 0.0 | 0.9 | 2048 |
Pricing
OpenAI charges per token. Check OpenAI pricing for current rates.
Troubleshooting
“Insufficient quota”
- Add credits to your OpenAI account
- Check usage limits at platform.openai.com
“Model not found”
- Verify the model name is correct
- Some models require organization verification
Slow responses
- o-series models (o1, o3, o4) are slower by design — they “think” before responding
- Pro models (o3-pro, gpt-5.2-pro) take even longer for deeper reasoning
- For faster responses, use gpt-4o, gpt-5-mini, or gpt-4o-mini
Related
- Anthropic — Claude models
- Gemini — Google models
- Configuration — All settings