GPT 5 - Oxen.ai

Try GPT 5 in the Workbench

Run this model interactively, tune parameters, and compare outputs.

Model ID: gpt-5-2025-08-07 GPT 5 is a multimodal LLM featuring a multi-model architecture with dynamic routing across specialized sub-models for different prompt complexities. It excels in reducing hallucinations, maintaining higher factual accuracy, supporting extended context lengths, and handling simultaneous text and image inputs with notable improvements in reasoning and coding reliability. Some other noteworthy features of GPT 5 include adaptive response modes (Auto, Fast, Thinking) for balancing speed and reasoning effort, parameter control for verbosity and reasoning depth, and enhanced function calling for toolchain integration.

Metric	Value
Parameter Count	Unknown
Mixture of Experts	Yes
Active Parameter Count	Unknown
Context Length	400,000 tokens
Multilingual	Yes
Quantized*	Unknown

*Quantization is specific to the inference provider and the model may be offered with different quantization levels by other providers.

Example request

Use the Workbench as a request builder: configure parameters for this model in the UI, then open the API tab to copy the exact cURL or Python call.

Minimal
Basic parameters
All parameters

curl -X POST https://hub.oxen.ai/api/ai/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $OXEN_API_KEY" \
  -d '{
  "model": "gpt-5-2025-08-07",
  "messages": [
    {
      "role": "user",
      "content": "Hello, what can you do?"
    }
  ]
}'

curl -X POST https://hub.oxen.ai/api/ai/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $OXEN_API_KEY" \
  -d '{
  "model": "gpt-5-2025-08-07",
  "messages": [
    {
      "role": "user",
      "content": "Hello, what can you do?"
    }
  ],
  "temperature": 0.7,
  "max_tokens": 1024,
  "stream": false
}'

curl -X POST https://hub.oxen.ai/api/ai/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $OXEN_API_KEY" \
  -d '{
  "model": "gpt-5-2025-08-07",
  "messages": [
    {
      "role": "user",
      "content": "Hello, what can you do?"
    }
  ],
  "temperature": 0.7,
  "max_tokens": 1024,
  "stream": false,
  "top_p": 1.0,
  "frequency_penalty": 0,
  "presence_penalty": 0
}'

Fetch model details

The models endpoint returns the full model object, including its json_request_schema.

curl -H "Authorization: Bearer $OXEN_API_KEY" https://hub.oxen.ai/api/ai/models/gpt-5-2025-08-07

Request parameters

This model follows the standard OpenAI chat completions request body. See the chat completions reference for the full parameter list.

Inference API

Documentation Index

Try GPT 5 in the Workbench

​Example request

​Fetch model details

​Request parameters

Example request

Fetch model details

Request parameters