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modelprices.xyz cheapest reasoning
https://modelprices.xyz/llm/cheapest/reasoning
answers 402
Cheapest reasoning-model leaderboard: the 50 lowest-cost AI models with extended reasoning / chain-of-thought support, ranked by inference cost per token — o3, Claude 5 thinking, Gemini 3 Pro, DeepSeek R1, Qwen QwQ and more across 70+ providers. Input, output and cache USD per 1M tokens with context windows joined in. Refreshed hourly.
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.01
- Network
- base
- Pay to
- 0x63a20fa244d3E6a8902121E99704b7F857dc6EBB
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 157 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:21:02.112Z (32d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fmodelprices.xyz%2Fllm%2Fcheapest%2Freasoning"