Migrating from OpenRouter

Boundless is a drop-in replacement for OpenRouter. Change two lines of code.

Boundless is a drop-in replacement for OpenRouter. Change two lines of code.

Quick Migration

Before (OpenRouter)

from openai import OpenAI

client = OpenAI(
    api_key="sk-or-...",
    base_url="https://openrouter.ai/api/v1",
)

After (Boundless)

from openai import OpenAI

client = OpenAI(
    api_key="sk-...",  # Boundless key from dashboard
    base_url="https://api.boundlessapi.com/v1",
)

Same for TypeScript, curl, LangChain, etc.

Comparison

Feature OpenRouter Boundless
API format OpenAI-compatible OpenAI-compatible
Auth Bearer token Bearer token
Billing Prepaid credits Prepaid credits
Platform fee ~5% on purchase None
Default ZDR Yes Yes
Failover Yes Yes
Free credits Small test amount $5 signup bonus

Model Name Mapping

Most model IDs are identical or similar:

OpenRouter Boundless Notes
openai/gpt-4o gpt-5.5 See Models for current IDs Drop provider prefix
anthropic/claude-sonnet-4 claude-sonnet-4-6 Check exact ID in dashboard
deepseek/deepseek-chat deepseek-v4-flash
qwen/qwen-max qwen3.7-max

Use GET /v1/models or Dashboard to confirm IDs.

Feature Differences

Not Yet Available

  • BYOK (Bring Your Own Key) — roadmap
  • :nitro, :floor variants — use provider.sort instead
  • Crypto payments — Stripe only at launch

Boundless Advantages

  • GPT & Claude 50% below official; other models 25% below official
  • US-region routing by default
  • Simpler model naming (no provider prefix required)

Environment Variables

# Before
OPENROUTER_API_KEY=sk-or-...
OPENAI_BASE_URL=https://openrouter.ai/api/v1

# After
BOUNDLESS_API_KEY=sk-...
OPENAI_BASE_URL=https://api.boundlessapi.com/v1

LangChain

from langchain_openai import ChatOpenAI

llm = ChatOpenAI(
    model="claude-sonnet-4-6",
    openai_api_key="YOUR_BOUNDLESS_KEY",
    openai_api_base="https://api.boundlessapi.com/v1",
)

Headers

OpenRouter-specific headers (HTTP-Referer, X-Title) are not required on Boundless. Optional X-Title accepted for analytics.

Billing Migration

  1. Export usage history from OpenRouter (for your records)
  2. Add credits on Boundless
  3. Run parallel traffic briefly to compare cost/latency
  4. Switch production traffic

No automatic balance transfer between platforms.

Support

Migration questions: support@boundlessapi.com