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OpenAI

GPT Oss 120b

Name: GPT Oss 120b
Brand: OpenAI
Price: 0.037 USD
Availability: InStock

GPT Oss 120b is a reasoning model by OpenAI with function calling, structured output — designed for complex, multi-step problem solving where accuracy matters more than speed. It supports a 131K token context window with up to 131K tokens of output. Priced at $0.037 per million input tokens and $0.17 per million output tokens, it is one of the most cost-efficient options in its class. Access GPT Oss 120b through Inworld Router with OpenAI SDK compatibility, built-in failover, and intelligent routing across providers.

→Function CallingReasoningResponse SchemareasoningCapabilityresponseFormatCapability

Use This Model

Step 1 — Create Router

curl --location 'https://api.inworld.ai/router/v1/routers' \
--header 'Authorization: Basic <your-api-key>' \
--header 'Content-Type: application/json' \
--data '{
  "name": "compare-frontier-models",
  "defaultRoute": {
    "route_id": "default",
    "variants": [
      {
        "variant": {
          "variant_id": "deepinfra/openai/gpt-oss-120b-a",
          "model_id": "deepinfra/openai/gpt-oss-120b"
        },
        "weight": 33
      },
      {
        "variant": {
          "variant_id": "groq/openai/gpt-oss-120b-b",
          "model_id": "groq/openai/gpt-oss-120b"
        },
        "weight": 33
      },
      {
        "variant": {
          "variant_id": "openai/gpt-4o-mini-c",
          "model_id": "openai/gpt-4o-mini"
        },
        "weight": 34
      }
    ]
  }
}'

import requests

response = requests.post(
    "https://api.inworld.ai/router/v1/routers",
    headers={
        "Authorization": "Basic <your-api-key>",
        "Content-Type": "application/json",
    },
    json={
        "name": "compare-frontier-models",
        "defaultRoute": {
            "route_id": "default",
            "variants": [
                {
                    "variant": {
                        "variant_id": "deepinfra/openai/gpt-oss-120b-a",
                        "model_id": "deepinfra/openai/gpt-oss-120b"
                    },
                    "weight": 33
                },
                {
                    "variant": {
                        "variant_id": "groq/openai/gpt-oss-120b-b",
                        "model_id": "groq/openai/gpt-oss-120b"
                    },
                    "weight": 33
                },
                {
                    "variant": {
                        "variant_id": "openai/gpt-4o-mini-c",
                        "model_id": "openai/gpt-4o-mini"
                    },
                    "weight": 34
                }
            ]
        }
    },
)
print(response.json())

const response = await fetch(
  "https://api.inworld.ai/router/v1/routers",
  {
    method: "POST",
    headers: {
      Authorization: "Basic <your-api-key>",
      "Content-Type": "application/json",
    },
    body: JSON.stringify({
      name: "compare-frontier-models",
      defaultRoute: {
        route_id: "default",
        variants: [
          {
            variant: {
              variant_id: "deepinfra/openai/gpt-oss-120b-a",
              model_id: "deepinfra/openai/gpt-oss-120b",
            },
            weight: 33,
          },
          {
            variant: {
              variant_id: "groq/openai/gpt-oss-120b-b",
              model_id: "groq/openai/gpt-oss-120b",
            },
            weight: 33,
          },
          {
            variant: {
              variant_id: "openai/gpt-4o-mini-c",
              model_id: "openai/gpt-4o-mini",
            },
            weight: 34,
          },
        ],
      },
    }),
  }
);
const data = await response.json();
console.log(data);

Step 2 — Chat Completion

curl --location 'https://api.inworld.ai/v1/chat/completions' \
--header 'Authorization: Basic <your-api-key>' \
--header 'Content-Type: application/json' \
--data '{
  "model": "inworld/compare-frontier-models",
  "messages": [{"role": "user", "content": "Hello!"}]
}'

GPT Oss 120b pricing and providers

Access GPT Oss 120b through Inworld Router or Realtime API via 2 inference providers. Compare pricing and specs across providers below. By using the AI provider(s) below you acknowledge you reviewed and agree to their terms listed in the Legal section under the AI provider's name.

							Capabilities	Input modalities	Output modalities
DeepInfra	$0.037	$0.17	—	—	131.1K	131.1K	+2
Groq	$0.15	$0.60	$0.075	—	131.1K	32.8K	+3

Prices in USD per 1M tokens.

Other OpenAI models available through Inworld

Compare GPT Oss 120b with other OpenAI models available through Inworld Router or Realtime API.

							Capabilities
GPT 4o Mini	$0.15	$0.60	$0.075	—	128K	16.4K	+2
GPT 6 Luna	$0.10	$0.50	$0.01	$0.125	1.1M	128K	+4
GPT 5.6 Luna	$0.20	$1.20	$0.02	$0.25	1.1M	128K	+4
GPT 6.1 Sol	$2.00	$10.00	$0.10	$2.50	1.1M	128K	+4
GPT 6 Astra	$10.00	$50.00	$1.00	$12.50	1.1M	128K	+4
GPT 6 Luna:fast	$0.20	$1.00	$0.02	$0.25	1.1M	128K	+4
GPT 6 Sol	$2.00	$10.00	$0.20	$2.50	1.1M	128K	+4
GPT 5.6 Sol	$5.00	$30.00	$0.50	$6.25	1.1M	128K	+4
GPT 5.6 Terra	$2.00	$12.00	$0.20	$2.50	1.1M	128K	+4
GPT 5.5	$5.00	$30.00	$0.50	—	1.1M	128K	+4
GPT 5.4	$2.50	$15.00	$0.25	—	1.1M	128K	+4
GPT 5.4 Mini	$0.75	$4.50	$0.075	—	400K	128K	+4
GPT 5.4 Nano	$0.20	$1.25	$0.02	—	400K	128K	+4
GPT 5.2	$1.75	$14.00	$0.175	—	400K	128K	+4
GPT 5.1	$1.25	$10.00	$0.125	—	400K	128K	+4
GPT 5 Mini	$0.25	$2.00	$0.025	—	400K	128K	+3
GPT 5 Nano	$0.05	$0.40	$0.005	—	400K	128K	+3
GPT 4o	$2.50	$10.00	$1.25	—	128K	16.4K	+2
GPT 4o 2024 08 06	$2.50	$10.00	$1.25	—	128K	16.4K	+2
GPT 4.1	$2.00	$8.00	$0.50	—	1M	32.8K	+2
GPT 4.1 Mini	$0.40	$1.60	$0.10	—	1M	32.8K	+2
GPT 4.1 Nano	$0.10	$0.40	$0.025	—	1M	32.8K	+1
GPT 4.1 Nano 2025 04 14	$0.10	$0.40	$0.025	—	1M	32.8K	+2
GPT 3.5 Turbo	$0.50	$1.50	—	—	16.4K	4.1K
GPT Image 2	$8.00	$30.00	$2.00	—	32.8K	32.8K
GPT Oss 20b	$0.075	$0.30	$0.038	—	131.1K	32.8K	+3
GPT Oss Safeguard 20b	$0.075	$0.30	$0.038	—	131.1K	65.5K	+3