Api Endpoint

BlockRun.AI

Chat completions with 33+ AI models including GPT-5.5, Claude Opus 4.6, and more. Supports OpenAI-compatible format.

Open interactive test console

Offering

Provider
BlockRun.AI
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Web Search Research
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://nano.blockrun.ai/api/v1/chat/completions
MIME type
application/json
First seen
2026-10-16T01:50:03.832Z
Last seen
Tags
X402, AI, blockchain, Inference, web_search_research

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.003 USDC
Atomic price: 3000 · Network: eip155:137 · Asset: USDC · Scheme: exact
Payment option 2
0.003 USDC
Atomic price: 3000 · Network: eip155:42161 · Asset: USDC · Scheme: exact
Payment option 3
0.003 USDC
Atomic price: 3000 · Network: eip155:10 · Asset: USDC · Scheme: exact
Payment option 4
3000 atomic units
Atomic price: 3000 · Network: eip155:130 · Asset: 0x078D782b760474a361dDA0AF3839290b0EF57AD6 · Scheme: exact
Payment option 5
0.003 USDC
Atomic price: 3000 · Network: eip155:43114 · Asset: USDC · Scheme: exact
Payment option 6
3000 atomic units
Atomic price: 3000 · Network: eip155:1 · Asset: 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 · Scheme: exact
Payment option 7
3000 atomic units
Atomic price: 3000 · Network: eip155:5042 · Asset: 0x3600000000000000000000000000000000000000 · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:137",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "3000",
    "payTo": "0xe9030014F5DAe217d0A152f02A043567b16c1aBf"
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "3000",
    "payTo": "0xe9030014F5DAe217d0A152f02A043567b16c1aBf"
  },
  {
    "scheme": "exact",
    "network": "eip155:10",
    "asset": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
    "amount": "3000",
    "payTo": "0xe9030014F5DAe217d0A152f02A043567b16c1aBf"
  },
  {
    "scheme": "exact",
    "network": "eip155:130",
    "asset": "0x078D782b760474a361dDA0AF3839290b0EF57AD6",
    "amount": "3000",
    "payTo": "0xe9030014F5DAe217d0A152f02A043567b16c1aBf"
  },
  {
    "scheme": "exact",
    "network": "eip155:43114",
    "asset": "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
    "amount": "3000",
    "payTo": "0xe9030014F5DAe217d0A152f02A043567b16c1aBf"
  },
  {
    "scheme": "exact",
    "network": "eip155:1",
    "asset": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
    "amount": "3000",
    "payTo": "0xe9030014F5DAe217d0A152f02A043567b16c1aBf"
  },
  {
    "scheme": "exact",
    "network": "eip155:5042",
    "asset": "0x3600000000000000000000000000000000000000",
    "amount": "3000",
    "payTo": "0xe9030014F5DAe217d0A152f02A043567b16c1aBf"
  }
]

Observed health

Status
Healthy
Latest latency
80 ms
Average latency
75 ms
HTTP status
204
Last checked
Reachability
100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "body": {
    "type": "object",
    "required": [
      "model",
      "messages"
    ],
    "properties": {
      "model": {
        "enum": [
          "openai/gpt-6-astra",
          "openai/gpt-6-sol",
          "openai/gpt-6-luna",
          "openai/gpt-5.6-sol",
          "openai/gpt-5.6-terra",
          "openai/gpt-5.6-luna",
          "openai/gpt-5.6-sol-pro",
          "openai/gpt-5.6-terra-pro",
          "openai/gpt-5.6-luna-pro",
          "openai/gpt-5.5",
          "openai/gpt-5.5-pro",
          "openai/chat-latest",
          "openai/gpt-5.4",
          "openai/gpt-5.4-pro",
          "openai/gpt-5.1",
          "openai/gpt-5.2",
          "openai/gpt-5.4-mini",
          "openai/gpt-5-mini",
          "openai/gpt-5.4-nano",
          "openai/gpt-5.2-pro",
          "openai/gpt-5.3-codex",
          "openai/gpt-4.1",
          "openai/gpt-4.1-mini",
          "openai/gpt-4.1-nano",
          "openai/gpt-4o",
          "openai/gpt-4o-mini",
          "openai/o1",
          "openai/o3",
          "openai/o3-mini",
          "openai/o4-mini",
          "anthropic/claude-haiku-4.5",
          "anthropic/claude-sonnet-5.5",
          "anthropic/claude-sonnet-5",
          "anthropic/claude-sonnet-4.6",
          "anthropic/claude-sonnet-4.5",
          "anthropic/claude-opus-4.5",
          "anthropic/claude-opus-4.7",
          "anthropic/claude-fable-5.1",
          "anthropic/claude-fable-5",
          "anthropic/claude-opus-4.8",
          "anthropic/claude-opus-5",
          "anthropic/claude-opus-5.5",
          "google/gemini-3.1-pro",
          "google/gemini-3-flash-preview",
          "google/gemini-3.8-flash",
          "google/gemini-3.6-flash",
          "google/gemini-3.5-flash",
          "google/gemini-2.5-pro",
          "google/gemini-2.5-flash",
          "google/gemini-3.5-flash-lite",
          "google/gemini-3.1-flash-lite",
          "google/gemini-2.5-flash-lite",
          "deepseek/deepseek-v4-flash-vision-exp",
          "deepseek/deepseek-v4-pro",
          "deepseek/deepseek-chat",
          "deepseek/deepseek-reasoner",
          "moonshot/kimi-k3",
          "zai/glm-5.3",
          "zai/glm-5.3-flash",
          "zai/glm-5.2",
          "zai/glm-5.1",
          "zai/glm-5",
          "zai/glm-5-turbo",
          "xai/grok-4.3",
          "xai/grok-build-0.1",
          "xai/grok-4.7",
          "xai/grok-4.6",
          "xai/grok-4.5",
          "minimax/minimax-m2.7",
          "minimax/minimax-m3",
          "qwen/qwen3.7-max",
          "qwen/qwen3.7-plus",
          "qwen/qwen3.7-flash",
          "qwen/qwen3.8-flash",
          "xiaomi/mimo-v2.5",
          "xiaomi/mimo-v2.5-pro",
          "nvidia/nemotron-3-nano-omni-30b-a3b-reasoning",
          "nvidia/nemotron-3.5-lightning",
          "nvidia/llama-3.2-11b-vision",
          "nvidia/nemotron-3-ultra-550b",
          "cohere/north-mini-code",
          "poolside/laguna-xs-2.1"
        ],
        "type": "string",
        "example": "openai/gpt-4.1-mini",
        "description": "Model ID to use for completion"
      },
      "stream": {
        "type": "boolean",
        "description": "Enable streaming responses"
      },
      "messages": {
        "type": "array",
        "items": {
          "type": "object",
          "required": [
            "role",
            "content"
          ],
          "properties": {
            "role": {
              "enum": [
                "system",
                "user",
                "assistant"
              ],
              "type": "string"
            },
            "content": {
              "type": "string"
            }
          }
        },
        "example": [
          {
            "role": "user",
            "content": "What is x402?"
          }
        ],
        "description": "Array of chat messages"
      },
      "max_tokens": {
        "type": "integer",
        "maximum": 128000,
        "minimum": 1,
        "description": "Maximum tokens to generate"
      },
      "temperature": {
        "type": "number",
        "maximum": 2,
        "minimum": 0,
        "description": "Sampling temperature (0-2)"
      }
    }
  },
  "type": "http",
  "method": "POST",
  "bodyType": "json"
}

Output schema

{
  "type": "object",
  "properties": {
    "id": {
      "type": "string"
    },
    "model": {
      "type": "string"
    },
    "usage": {
      "type": "object",
      "properties": {
        "total_tokens": {
          "type": "integer"
        },
        "prompt_tokens": {
          "type": "integer"
        },
        "completion_tokens": {
          "type": "integer"
        }
      }
    },
    "object": {
      "type": "string",
      "example": "chat.completion"
    },
    "choices": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "index": {
            "type": "integer"
          },
          "message": {
            "type": "object",
            "properties": {
              "role": {
                "type": "string"
              },
              "content": {
                "type": "string"
              }
            }
          },
          "finish_reason": {
            "type": "string"
          }
        }
      }
    },
    "created": {
      "type": "integer"
    }
  }
}