AtlasBurn vs FastLLM

AtlasBurn is a cost-monitoring tool for teams that build on large language model APIs. It tracks spend and token usage across OpenAI, Anthropic and Google Gemini in real time, forecasts what your bill will be, and lets you set budget guardrails that stop runaway spending before the invoice arrives.

It is built for the problems that hit AI-native apps as they scale: retry storms where one timeout triggers cascading calls, expensive models being used for simple requests, and agent workflows that quietly multiply the number of model calls. AtlasBurn surfaces these patterns so engineering and finance can see where the money goes.

Pricing: AtlasBurn is free during its beta, with no credit c…

FastLLM is an AI API gateway: a single endpoint and dashboard for accessing several large language models. Its site runs on the open-source New API gateway software, which offers OpenAI-compatible endpoints, per-key usage limits and a central admin dashboard for tracking consumption.

The idea is to let developers use different models through one key and one billing account instead of managing a separate account for each provider. Usage is tracked per key, so teams can share access while keeping an eye on spend.

Good fit if you: want one OpenAI-compatible endpoint for several models and simple usage tracking.
Less ideal if you: need enterprise contracts, data-processing agreements or guaran…