One API.
Every model.
Zero plumbing.
GPT-6, Claude, Gemini, DeepSeek, Muse, Grok and a hundred more — behind a single OpenAI-compatible endpoint, with smart routing and honest per-token pricing.
$5 free credit · no subscription · invite-only early access
Infrastructure for the
multi-model era
Unified API
One OpenAI-compatible endpoint for every model. Switch models by changing a single string — no SDK sprawl, no re-integration, no provider lock-in.
Smart Routing
Requests route across provider regions for latency and availability. When a provider degrades, traffic shifts in under 300ms — invisibly.
Transparent Pricing
Per-token metering with no subscriptions and no hidden markups. Every request is itemized in your ledger the moment it completes.
Enterprise Security
TLS 1.3 everywhere, zero data retention on the gateway, and a contractual guarantee your prompts are never used for training.
Frontier models, one key away
| Model | Provider | Context | In / Out · 1M tok | |
|---|---|---|---|---|
| GPT-6 Astra Proopenai/gpt-6-astra-pro | OpenAI | 1.1M | $10.00 / $50.00 | |
| Claude Fable 5.1anthropic/claude-fable-5.1 | Anthropic | 1M | $10.00 / $50.00 | |
| Claude Sonnet 5anthropic/claude-sonnet-5 | Anthropic | 1M | $2.00 / $10.00 | |
| Gemini 3.8 Flashgoogle/gemini-3.8-flash | 1.0M | $0.75 / $3.75 | ||
| Muse Spark 1.3meta/muse-spark-1.3 | Meta | 1.0M | $1.25 / $4.25 | |
| DeepSeek V4.1 Flashdeepseek/deepseek-v4.1-flash | DeepSeek | 1.0M | $0.30 / $1.20 |
Zero to first call in minutes
Create your key
Register with your invite code and mint a scoped, revocable key from the console. Live in under a minute.
Point your SDK
Our endpoint is fully OpenAI-compatible. Change the base URL and key — your retries, streaming and tooling keep working.
Call any model
One request format reaches every model. Metering, logging and failover are handled in the gateway.
curl https://api.firmlinktech.com/v1/chat/completions \
-H "Authorization: Bearer $FIRMLINK_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "anthropic/claude-sonnet-5",
"messages": [{"role": "user", "content": "Hello!"}]
}'Teams shipping on FirmLink
We migrated four production services in an afternoon. The OpenAI-compatible surface meant literally two lines changed per service.
A provider outage last quarter was a non-event for our customers. The gateway absorbed it silently.
Benchmarking twelve models through one API key cut our model selection from weeks to two days.