xAI

Grok 4.3 Latest

Grok 4.3 Latest is a reasoning model by xAI with vision, function calling, web search, prompt caching, structured output — designed for complex, multi-step problem solving where accuracy matters more than speed. It supports a 1M token context window with up to 1M tokens of output. Priced at $1.25 per million input tokens and $2.5 per million output tokens. Access Grok 4.3 Latest through Inworld Router with OpenAI SDK compatibility, built-in failover, and intelligent routing across providers.

→Function CallingWeb SearchReasoningPrompt CachingResponse SchemaVisionreasoningCapability

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-4.3-latest-a",
          "model_id": "xai/grok-4.3-latest"
        },
        "weight": 33
      },
      {
        "variant": {
          "variant_id": "xai/grok-3-beta-b",
          "model_id": "xai/grok-3-beta"
        },
        "weight": 33
      },
      {
        "variant": {
          "variant_id": "xai/grok-3-fast-c",
          "model_id": "xai/grok-3-fast"
        },
        "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-4.3-latest-a",
                        "model_id": "xai/grok-4.3-latest"
                    },
                    "weight": 33
                },
                {
                    "variant": {
                        "variant_id": "xai/grok-3-beta-b",
                        "model_id": "xai/grok-3-beta"
                    },
                    "weight": 33
                },
                {
                    "variant": {
                        "variant_id": "xai/grok-3-fast-c",
                        "model_id": "xai/grok-3-fast"
                    },
                    "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-4.3-latest-a",
              model_id: "xai/grok-4.3-latest",
            },
            weight: 33,
          },
          {
            variant: {
              variant_id: "xai/grok-3-beta-b",
              model_id: "xai/grok-3-beta",
            },
            weight: 33,
          },
          {
            variant: {
              variant_id: "xai/grok-3-fast-c",
              model_id: "xai/grok-3-fast",
            },
            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 4.3 Latest pricing and providers

Access Grok 4.3 Latest 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	1M	1M	$1.25	$2.50	+4

Other xAI models available through Inworld

Compare Grok 4.3 Latest with other xAI models available through Inworld Router or Realtime API.

					Capabilities
Grok 3 Beta	131.1K	131.1K	$1.25	$2.50
Grok 3 Fast	—	—	$1.25	$2.50	—
Grok 3 Fast Beta	131.1K	131.1K	$1.25	$2.50
Grok 3 Fast Latest	131.1K	131.1K	$1.25	$2.50
Grok 3 Latest	131.1K	131.1K	$1.25	$2.50
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 High	—	—	$1.25	$2.50	—
Grok 3 Mini Fast High Beta	—	—	$1.25	$2.50	—
Grok 3 Mini Fast Latest	131.1K	131.1K	$1.25	$2.50	+2
Grok 3 Mini High	—	—	$1.25	$2.50	—
Grok 3 Mini High Beta	—	—	$1.25	$2.50	—
Grok 3 Mini 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 Fast Reasoning Latest	—	—	$1.25	$2.50	—
Grok 4 Latest	256K	256K	$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 0309	—	—	$1.25	$2.50	—
Grok 4.20 0309 Non Reasoning	—	—	$1.25	$2.50	—
Grok 4.20 0309 Reasoning	2M	2M	$1.25	$2.50	+2
Grok 4.20 Beta	—	—	$1.25	$2.50	—
Grok 4.20 Beta 0309	—	—	$1.25	$2.50	—
Grok 4.20 Beta 0309 Non Reasoning	2M	2M	$1.25	$2.50	+1
Grok 4.20 Beta 0309 Reasoning	2M	2M	$1.25	$2.50	+3
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 Beta Reasoning	—	—	$1.25	$2.50	—
Grok 4.20 Experimental Beta 0304	—	—	$1.25	$2.50	—
Grok 4.20 Experimental Beta 0304 Non Reasoning	—	—	$1.25	$2.50	—
Grok 4.20 Experimental Beta 0304 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 Experimental Beta Reasoning Latest	—	—	$1.25	$2.50	—
Grok 4.20 Non Reasoning	—	—	$1.25	$2.50	—
Grok 4.20 Non Reasoning Gv2	—	—	$1.25	$2.50	—
Grok 4.20 Non Reasoning Latest	—	—	$1.25	$2.50	—
Grok 4.20 Reasoning	—	—	$1.25	$2.50	—
Grok 4.20 Reasoning Gv2	—	—	$1.25	$2.50	—
Grok 4.20 Reasoning Latest	—	—	$1.25	$2.50	—
Grok 4.3	1M	1M	$1.25	$2.50	+4
Grok Code Fast	256K	256K	$1.25	$2.50	+1
Grok Code Fast 1 0825	256K	256K	$1.25	$2.50	+1
Grok Latest	—	—	$1.25	$2.50	—