OpenAI's maximum-capability GPT-5 tier. Uses more compute to think longer and deliver the most reliable answers on the hardest reasoning, coding, and analysis tasks.
Test this model instantly in the Console Playground โ no code required
Copy usage instructions for Claude, ChatGPT, or other AI
| Token Type | Credits | USD Equivalent |
|---|---|---|
| Input Tokens | 27,870 | $18.58 |
| Output Tokens | 222,960 | $148.64 |
* 1,500 credits โ $1 (actual charges may vary based on usage)
curl -X POST "https://api.core.today/llm/openai/v1/chat/completions" \
-H "Content-Type: application/json" \
-H "Authorization: Bearer cdt_your_api_key" \
-d '{
"model": "gpt-5-pro",
"messages": [
{
"role": "user",
"content": "Design a distributed consensus protocol tolerant to Byzantine faults for a 7-node cluster, prove its safety properties, and provide pseudocode."
}
],
"max_completion_tokens": 16000
}'| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
messages | array | Yes | - | Array of message objects with role and content |
model | string | Yes | gpt-5-pro | Model identifier |
max_completion_tokens | integer | No | - | Maximum tokens in response (includes internal reasoning tokens). Note: use max_completion_tokens, not max_tokens |
reasoning_effort | string | No | - | Reasoning effort level: low, medium, or high lowmediumhigh |
stream | boolean | No | false | Enable Server-Sent Events streaming |
Maximum-effort analysis with GPT-5 Pro
curl -X POST "https://api.core.today/llm/openai/v1/chat/completions" \
-H "Content-Type: application/json" \
-H "Authorization: Bearer cdt_your_api_key" \
-d '{
"model": "gpt-5-pro",
"messages": [
{
"role": "user",
"content": "Design a distributed consensus protocol tolerant to Byzantine faults for a 7-node cluster, prove its safety properties, and provide pseudocode."
}
],
"max_completion_tokens": 16000
}'POST /llm/openai/v1/chat/completions