x402 Gateway – OpenAI o1 Reasoning Model

x402

x402 Gateway – OpenAI o1 Reasoning Model is a paid API for AI agents from x402-gateway-production.up.railway.app, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-15).

Runs OpenAI's o1 reasoning model via a pay-per-call x402-gated API, excelling at complex math, science, coding, and multi-step problem solving

Price / call$0.03

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StatusUnknown

How this service works

OpenAI's reasoning model — excels at math, science, coding, and multi-step problem solving

Output

A detailed, chain-of-thought-style text response from OpenAI's o1 model, including intermediate reasoning steps and a final answer to the input prompt.

Example use cases

Example prompt

“Use OpenAI's o1 reasoning model to solve this step by step: 'A train leaves Chicago at 9am traveling at 80mph toward New York, 790 miles away. Another leaves New York at 10am at 100mph. At what time and distance from Chicago do they meet?' Show your full reasoning chain.”

Technical details

Endpoint

POSThttps://x402-gateway-production.up.railway.app/api/llm/o1

When to prefer

Choose this endpoint when the task requires deep multi-step reasoning, complex mathematics, scientific analysis, or hard coding problems where accuracy and chain-of-thought are more important than speed. Prefer over GPT-4o or Claude for olympiad-style math, logic proofs, or algorithmic puzzles. Use when you need OpenAI's o1 specifically rather than a faster/cheaper general-purpose model.

Side effects

Payment not included or invalid x402 USDC payment header — returns 402 Payment Required
Malformed or empty prompt body — returns 400 Bad Request
Model overloaded or upstream OpenAI API unavailable — returns 503 or timeout
Request exceeds token context limit — truncated or error response
Network issues with Railway deployment — intermittent 5xx errors

Input

{
  "model": "o1",
  "messages": [
    {
      "role": "user",
      "content": "A train leaves Chicago at 9am traveling at 80mph toward New York, 790 miles away. Another leaves New York at 10am at 100mph toward Chicago. At what time and distance from Chicago do they meet? Show your full reasoning chain."
    }
  ],
  "max_tokens": 8000
}

Output

{
  "model": "openai/o1-2024-12-17",
  "usage": {
    "cost": 0.12312,
    "is_byok": false,
    "cost_details": {
      "upstream_inference_cost": 0.12312,
      "upstream_inference_prompt_cost": 0.0009,
      "upstream_inference_completions_cost": 0.12222
    },
    "total_tokens": 2097,
    "prompt_tokens": 60,
    "completion_tokens": 2037,
    "prompt_tokens_details": {
      "audio_tokens": 0,
      "video_tokens": 0,
      "cached_tokens": 0,
      "cache_write_tokens": 0
    },
    "completion_tokens_details": {
      "audio_tokens": 0,
      "image_tokens": 0,
      "reasoning_tokens": 768
    }
  },
  "content": "Solution Explanation:\n\n1) First, set up a coordinate system with Chicago as the “start” (0 miles) and New York as the “end” (790 miles).\n\n2) Let T be the elapsed time in hours after 9 a.m. At time T (where T ≥ 1 so that the second train has started):\n   • The first train (leaving Chicago at 9 a.m.) has been traveling for T hours at 80 mph, so its distance from Chicago is 80T miles.\n   • The second train (leaving New York at 10 a.m.) starts 1 hour later. By 9 a.m. + T hours, it has traveled for (T − 1) hours at 100 mph, so its distance from New York is 100(T − 1) miles. Hence, counting from Chicago’s end, it has covered 790 − 100(T − 1) miles (but we typically just use the sum-of-distances approach, below).\n\n3) When they meet, the sum of the distances they have traveled equals the total distance of 790 miles:\n   80T + 100(T − 1) = 790.\n\n4) Solve for T:\n   80T + 100T − 100 = 790  \n   180T − 100 = 790  \n   180T = 890  \n   T = 890 / 180 = 4.9444... hours (approximately).\n\n   In hours and minutes, this is about 4 hours and (0.9444 × 60) ≈ 56.7 minutes, so about 1:56 p.m.\n\n5) Find how far they are from Chicago when they meet. Since the first train’s distance from Chicago is 80T:\n   Distance = 80 × 4.9444... ≈ 395.6 miles.\n\nAnswer:\n• They meet at about 1:56 p.m.  \n• They are approximately 396 miles from Chicago at the meeting point."
}

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Technical details

Endpoint

POSThttps://x402-gateway-production.up.railway.app/api/llm/o1

When to prefer

Side effects

Payment not included or invalid x402 USDC payment header — returns 402 Payment Required
Malformed or empty prompt body — returns 400 Bad Request
Model overloaded or upstream OpenAI API unavailable — returns 503 or timeout
Request exceeds token context limit — truncated or error response
Network issues with Railway deployment — intermittent 5xx errors

Input

{
  "model": "o1",
  "messages": [
    {
      "role": "user",
      "content": "A train leaves Chicago at 9am traveling at 80mph toward New York, 790 miles away. Another leaves New York at 10am at 100mph toward Chicago. At what time and distance from Chicago do they meet? Show your full reasoning chain."
    }
  ],
  "max_tokens": 8000
}

Output

{
  "model": "openai/o1-2024-12-17",
  "usage": {
    "cost": 0.12312,
    "is_byok": false,
    "cost_details": {
      "upstream_inference_cost": 0.12312,
      "upstream_inference_prompt_cost": 0.0009,
      "upstream_inference_completions_cost": 0.12222
    },
    "total_tokens": 2097,
    "prompt_tokens": 60,
    "completion_tokens": 2037,
    "prompt_tokens_details": {
      "audio_tokens": 0,
      "video_tokens": 0,
      "cached_tokens": 0,
      "cache_write_tokens": 0
    },
    "completion_tokens_details": {
      "audio_tokens": 0,
      "image_tokens": 0,
      "reasoning_tokens": 768
    }
  },
  "content": "Solution Explanation:\n\n1) First, set up a coordinate system with Chicago as the “start” (0 miles) and New York as the “end” (790 miles).\n\n2) Let T be the elapsed time in hours after 9 a.m. At time T (where T ≥ 1 so that the second train has started):\n   • The first train (leaving Chicago at 9 a.m.) has been traveling for T hours at 80 mph, so its distance from Chicago is 80T miles.\n   • The second train (leaving New York at 10 a.m.) starts 1 hour later. By 9 a.m. + T hours, it has traveled for (T − 1) hours at 100 mph, so its distance from New York is 100(T − 1) miles. Hence, counting from Chicago’s end, it has covered 790 − 100(T − 1) miles (but we typically just use the sum-of-distances approach, below).\n\n3) When they meet, the sum of the distances they have traveled equals the total distance of 790 miles:\n   80T + 100(T − 1) = 790.\n\n4) Solve for T:\n   80T + 100T − 100 = 790  \n   180T − 100 = 790  \n   180T = 890  \n   T = 890 / 180 = 4.9444... hours (approximately).\n\n   In hours and minutes, this is about 4 hours and (0.9444 × 60) ≈ 56.7 minutes, so about 1:56 p.m.\n\n5) Find how far they are from Chicago when they meet. Since the first train’s distance from Chicago is 80T:\n   Distance = 80 × 4.9444... ≈ 395.6 miles.\n\nAnswer:\n• They meet at about 1:56 p.m.  \n• They are approximately 396 miles from Chicago at the meeting point."
}