Aviationstack ◆
Aviationstack is a scalable REST API for real-time flight tracking, historical flight data, airport info, and global aviation data.

ANVX (Developer Tools): ANVX is a financial autopilot for AI-native companies, routing LLM traffic to control costs. Pricing: Free (Observer mode) – no credit card required. (data verified August 2026)
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ANVX is a financial autopilot designed for AI-native companies. It sits between your application and LLM providers (OpenAI, Anthropic, Google AI, etc.) to route requests intelligently based on your budget, runway, and quality requirements. It doesn't just optimize per-request price; it considers your complete financial position to make cost-saving decisions.
AI-native companies often face unpredictable LLM costs, runaway agent loops, and complex bookkeeping. ANVX prevents cost disasters by detecting and killing runaway loops before they escalate (e.g., a $1,400 bill becoming $14,000), and consolidates 28 providers into accountant-ready close packs with accrual-basis P&L and bank statement reconciliation.
ANVX is built for small AI-native teams of 1–15 people who use LLM APIs programmatically and need financial control. It's ideal for startups and scale-ups that want to preserve runway and close books in minutes. It is NOT for companies that don't use LLM APIs or don't need financial oversight of their AI spend.
Use ANVX to route traffic to cheaper models (e.g., Haiku) when your budget is tight, or to enforce daily caps to avoid surprises. It also helps with treasury management—for example, moving funds from Coinbase to Mercury to fund projected API bills, as shown in its upcoming v2.5 feature.
Editorial score from our review methodology — not user ratings.
ANVX pricing: Free (Observer mode) – no credit card required. Billing model: Free.
Always free, no credit card required. ANVX watches your traffic and shows what it would change without rerouting anything.
Requires upgrade from Observer. Policies enforce budgets; major decisions surface for your approval. (Pricing not listed on the page – contact ANVX for details.)
Hands-off optimization within your boundaries, with a full audit trail. (Pricing not listed on the page – contact ANVX for details.)
Start with Observer for free, then upgrade when you're ready.
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