Latest GPT model coverage
Use GPT-5.6 Sol, Luna, and Terra, GPT-5.5, GPT-5.4, GPT-5 mini, GPT-4o, GPT-4.1 mini, and GPT Image 2 from one catalog as they are available.
Call the latest GPT models through one OpenAI-compatible API key. Use GPT-5.6 Sol, Luna, and Terra, GPT-5.5, GPT-5.4, GPT-5 mini, GPT-4o, and GPT Image 2 from the same Flatkey account.
GPT · Gemini · Claude · DeepSeek · Kimi · Seedance — one key, one invoice · no credit card to start
GPT API access
| Modelo | Flatkey | Reference |
|---|---|---|
| GPT-5.5 output / 1M tokens | $10.00 | $15.00 |
| GPT-5.4 and GPT-5 mini | One key | Separate setup |
| GPT-4o and GPT Image 2 | One key | Separate setup |
* Representative coverage — see live pricing for current GPT model rates and availability.
Use GPT-5.6 Sol, Luna, and Terra, GPT-5.5, GPT-5.4, GPT-5 mini, GPT-4o, GPT-4.1 mini, and GPT Image 2 from one catalog as they are available.
Keep the OpenAI SDK already in your application. Change base_url, set a Flatkey API key, and choose the GPT model id you need.
Route chat, coding, automation, content, and image generation through one account with pricing visibility before you scale.
Compare GPT with Claude, Gemini, DeepSeek, Qwen, Kimi, and GLM without creating separate provider accounts or changing your API integration.
Call the latest GPT models through one OpenAI-compatible API key. Use GPT-5.6 Sol, Luna, and Terra, GPT-5.5, GPT-5.4, GPT-5 mini, GPT-4o, and GPT Image 2 from the same Flatkey account.
Get your GPT API keyGPT · Gemini · Claude · DeepSeek · Kimi · Seedance — one key, one invoice · no credit card to start
Current catalog coverage includes GPT-5.6 Sol, GPT-5.6 Luna, GPT-5.6 Terra, GPT-5.5, GPT-5.4, GPT-5.4 mini, GPT-5.4 nano, GPT-5 mini, GPT-4o, GPT-4o mini, GPT-4.1 mini, and GPT Image 2 when available.
Yes. Point the SDK at the Flatkey /v1 base URL, use a Flatkey API key, and choose the GPT model id you need, such as gpt-5.5.
No. flatkey.ai is OpenAI-compatible: keep your existing OpenAI SDK and switch base_url plus api_key. Model ids stay the same.
One plan covers every model. Usage analytics and a single invoice keep spend bounded before you scale.