Choose account API billing or wallet billing. Each mode uses its own gateway.

Register, create an API key, and add credits. Store BLOCKRUN_API_KEY in your server environment.

import os
from openai import OpenAI

client = OpenAI(api_key=os.environ["BLOCKRUN_API_KEY"], base_url="https://api.blockrun.ai/v1")
response = client.chat.completions.create(
    model="openai/gpt-4.1-nano",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)

Account API access is live now. SDK, Franklin and ClawRouter account onboarding updates are rolling out through their repositories; use a release containing the relevant API support change or build that branch. Account credits and wallet balances are separate. See the account dashboard for usage and billing.

For native wallet access, prefer Solana at sol.blockrun.ai, followed by Base at blockrun.ai. Existing chain selections remain supported.

Every frontier model. Pay per use. No subscription.

The open-source alternative to Claude Code and Cursor. Use any model, switch mid-session, pay only for what you use.

npm install -g @blockrun/franklin
franklin setup solana
franklin

With the Franklin account API update, set BLOCKRUN_API_KEY and run franklin start; no wallet setup is needed for account-billed models and tools. Trades and other wallet signatures still require a transaction wallet.

Proxy mode — use Franklin as a payment proxy behind Claude Code:

franklin init    # auto-configures Claude Code to route through Franklin

Cut LLM costs automatically — route every request to the cheapest capable model.

Routes every request to the cheapest model that can handle it — 15-dimension weighted scoring in <1ms. This is where "best value per dollar" is earned, and it's open source.

curl -fsSL https://blockrun.ai/ClawRouter-update | bash

One account or one wallet, one API — text, images, video, music, real-time data, and real-person video IP.

• Chat — every frontier LLM (GPT, Claude, Gemini, Grok, Qwen, DeepSeek, Kimi, GLM, MiniMax, Llama) — OpenAI-compatible
• Images — gpt-image-2, Nano Banana Pro, CogView-4, Grok Imagine
• Video — ByteDance Seedance 2.0 + OpenAI Sora 2, with synced audio
• Music — MiniMax Music, full tracks per call
• RealFace — enroll a real person's likeness for Seedance video ($0.01, no KYC)
• Live data — web/news/X search, neural research (Exa), prediction markets (Polymarket/Kalshi), DEX + crypto prices

Markets, research, X/Twitter, crypto, image & video generation — all inside Claude Code.

claude mcp add blockrun npx -y @blockrun/mcp@latest

Your App / Agent
      ↓
  Franklin (standalone)     OR     ClawRouter (OpenClaw plugin)
      ↓                                ↓
  BlockRun API — one OpenAI-compatible endpoint, priced per call
      ↓
  API key  ────  card top-up or monthly invoice, in dollars
  Wallet   ────  x402 micropayments, USDC on Solana & Base
                 (+ gas-free batched USDC on Polygon / Arbitrum /
                   Optimism / Unichain via Circle Gateway)
      ↓
  every frontier model + real-time data + image / video / music

The wallet door is the one most gateways can't offer: payment is authentication, so an autonomous agent needs no account and no credential to hand over — the signature that pays also proves who's calling. The card door exists because most teams shouldn't have to care.