OpenAI
GPT 5 Nano
GPT 5 Nano is an OpenAI model with vision, function calling, extended reasoning, prompt caching, and structured output capabilities. It is priced at $0.05 per million input tokens and $0.4 per million output tokens, and has a 272K token context window. Access the GPT 5 Nano API through Inworld Router or Realtime API.
→Function CallingReasoningPrompt CachingResponse SchemaVision
curl --location 'https://api.inworld.ai/router/v1/routers' \
--header 'Content-Type: application/json' \
--header 'Authorization: Basic <your-api-key>' \
--data '{
"name": "compare-frontier-models",
"default_route": {
"route_id": "default",
"variants": [
{
"variant": { "variant_id": "openai",
"model_id": "openai/gpt-5-nano" },
"weight": 33
},
{
"variant": {
"variant_id": "openai",
"model_id": "openai/gpt-3.5-turbo"
},
"weight": 33
},
{
"variant": {
"variant_id": "openai",
"model_id": "openai/gpt-3.5-turbo-0125"
},
"weight": 34
}
]
}
}'Inference providers
Access GPT 5 Nano through OpenAI via Inworld Router or Realtime API.
| Capabilities | Input modalities | Output modalities | |||||
|---|---|---|---|---|---|---|---|
| OpenAI | 272K | 128K | $0.05 | $0.40 | +2 |
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| GPT 4.1 Nano | 1M | 32.8K | $0.10 | $0.40 | +1 | |||
| GPT 4.1 Nano 2025 04 14 | 1M | 32.8K | $0.10 | $0.40 | +1 | |||
| GPT 4o | 128K | 16.4K | $2.50 | $10.00 | +1 | |||
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| GPT 4o 2024 08 06 | 128K | 16.4K | $2.50 | $10.00 | +1 | |||
| GPT 4o 2024 11 20 | 128K | 16.4K | $2.50 | $10.00 | +1 | |||
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| GPT 4o Mini 2024 07 18 | 128K | 16.4K | $0.15 | $0.60 | +1 | |||
| GPT 4o Mini Search Preview | 128K | 16.4K | $0.15 | $0.60 | +2 | |||
| GPT 4o Mini Search Preview 2025 03 11 | 128K | 16.4K | $0.15 | $0.60 | +1 | |||
| GPT 4o Search Preview | 128K | 16.4K | $2.50 | $10.00 | +2 | |||
| GPT 4o Search Preview 2025 03 11 | 128K | 16.4K | $2.50 | $10.00 | +1 | |||
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| GPT 5 Mini | 272K | 128K | $0.25 | $2.00 | +2 | |||
| GPT 5 Mini 2025 08 07 | 272K | 128K | $0.25 | $2.00 | +2 | |||
| GPT 5 Nano 2025 08 07 | 272K | 128K | $0.05 | $0.40 | +2 | |||
| GPT 5 Search Api | 272K | 128K | $1.25 | $10.00 | +2 | |||
| GPT 5 Search Api 2025 10 14 | 272K | 128K | $1.25 | $10.00 | +2 | |||
| GPT 5.1 | 272K | 128K | $1.25 | $10.00 | +3 | |||
| GPT 5.1 2025 11 13 | 272K | 128K | $1.25 | $10.00 | +3 | |||
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| GPT 5.2 | 272K | 128K | $1.75 | $14.00 | +3 | |||
| GPT 5.2 2025 12 11 | 272K | 128K | $1.75 | $14.00 | +3 | |||
| GPT 5.2 Chat Latest | 128K | 16.4K | $1.75 | $14.00 | +3 | |||
| GPT 5.3 Chat Latest | 128K | 16.4K | $1.75 | $14.00 | +3 | |||
| GPT 5.4 | 1.1M | 128K | $2.50 | $15.00 | +2 | |||
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| GPT Oss 120b Turbo | — | — | $0.15 | $0.60 | — | |||
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