GPT-6 Luna is the fast, cost-efficient tier of the GPT-6 series on the Felo API, at $0.10 per million input tokens. Here is what that buys across classification, extraction, chat, and subagent workloads.
GPT-6 Sol sits between the Astra flagship and the Luna fast tier at $2 per million input tokens. Here is the arithmetic of the middle rung, and the routing pattern that gets flagship outcomes without flagship spend.
Claude Opus 5.5 is now on the Felo API with a 1M-token context window, cached input rates, and an Anthropic-compatible Messages endpoint. Here is what caching actually does to the cost of a long-running agent.
Grok 4.7 is live on the Felo API with a 450,000-token maximum output — three and a half times the frontier norm. Here is what that ceiling changes for coding agents, self-verifying loops, and whole-package migrations.
Felo API now lists GLM 5.3 Flash, Z.AI's 1M-token multimodal model that launched as the stealth model Ox Alpha. /bin/zsh.15 per million input tokens, ready to call in minutes.
Felo API now serves OX Alpha, a stealth frontier reasoning model with a 1M-token context. Free per million tokens for a limited time. Try it now.