xAI

Grok 4.20 Reasoning Gv2

Grok 4.20 Reasoning Gv2 is a large language model by xAI. Priced at $1.25 per million input tokens and $2.5 per million output tokens. Access Grok 4.20 Reasoning Gv2 through Inworld Router with OpenAI SDK compatibility, built-in failover, and intelligent routing across providers.

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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": "xai/grok-4.20-reasoning-gv2-a",
          "model_id": "xai/grok-4.20-reasoning-gv2"
        },
        "weight": 33
      },
      {
        "variant": {
          "variant_id": "xai/grok-3-mini-fast-b",
          "model_id": "xai/grok-3-mini-fast"
        },
        "weight": 33
      },
      {
        "variant": {
          "variant_id": "xai/grok-3-mini-fast-beta-c",
          "model_id": "xai/grok-3-mini-fast-beta"
        },
        "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": "xai/grok-4.20-reasoning-gv2-a",
                        "model_id": "xai/grok-4.20-reasoning-gv2"
                    },
                    "weight": 33
                },
                {
                    "variant": {
                        "variant_id": "xai/grok-3-mini-fast-b",
                        "model_id": "xai/grok-3-mini-fast"
                    },
                    "weight": 33
                },
                {
                    "variant": {
                        "variant_id": "xai/grok-3-mini-fast-beta-c",
                        "model_id": "xai/grok-3-mini-fast-beta"
                    },
                    "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: "xai/grok-4.20-reasoning-gv2-a",
              model_id: "xai/grok-4.20-reasoning-gv2",
            },
            weight: 33,
          },
          {
            variant: {
              variant_id: "xai/grok-3-mini-fast-b",
              model_id: "xai/grok-3-mini-fast",
            },
            weight: 33,
          },
          {
            variant: {
              variant_id: "xai/grok-3-mini-fast-beta-c",
              model_id: "xai/grok-3-mini-fast-beta",
            },
            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!"}]
}'

Grok 4.20 Reasoning Gv2 pricing and providers

Access Grok 4.20 Reasoning Gv2 through xAI via Inworld Router or Realtime API. 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
xAI	—	—	$1.25	$2.50	—

Other xAI models available through Inworld

Compare Grok 4.20 Reasoning Gv2 with other xAI models available through Inworld Router or Realtime API.

					Capabilities
Grok 3 Mini Fast	131.1K	131.1K	$1.25	$2.50	+2
Grok 3 Mini Fast Beta	131.1K	131.1K	$1.25	$2.50	+2
Grok 3 Mini Fast Latest	131.1K	131.1K	$1.25	$2.50	+2
Grok 4	256K	256K	$1.25	$2.50
Grok 4 Fast	—	—	$1.25	$2.50	—
Grok 4 Fast Non Reasoning Latest	—	—	$1.25	$2.50	—
Grok 4.1 Fast	2M	2M	$1.25	$2.50	+4
Grok 4.1 Fast Non Reasoning Latest	2M	2M	$1.25	$2.50	+2
Grok 4.1 Fast Reasoning Latest	2M	2M	$1.25	$2.50	+4
Grok 4.20	—	—	$1.25	$2.50	—
Grok 4.20 Beta Latest	—	—	$1.25	$2.50	—
Grok 4.20 Beta Latest Non Reasoning	—	—	$1.25	$2.50	—
Grok 4.20 Beta Latest Reasoning	—	—	$1.25	$2.50	—
Grok 4.20 Beta Non Reasoning	—	—	$1.25	$2.50	—
Grok 4.20 Experimental Beta Latest	—	—	$1.25	$2.50	—
Grok 4.20 Experimental Beta Non Reasoning Latest	—	—	$1.25	$2.50	—
Grok 4.20 Non Reasoning	—	—	$1.25	$2.50	—
Grok 4.20 Non Reasoning Latest	—	—	$1.25	$2.50	—
Grok Code Fast 1 0825	256K	256K	$1.00	$2.00	+1

Start building with Grok 4.20 Reasoning Gv2

Access Grok 4.20 Reasoning Gv2 and every other model through Inworld Router or Realtime API. Create your free account and start routing in minutes.

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