Aster by AsterWise

Aster by AsterWise is an AI multi-LLM API platform that gives developers pay-as-you-go access to AI models through a single prepaid balance, aimed at engineers who code with assistants or run research tasks. Instead of a monthly seat subscription, you top up a balance that does not expire and pay per token, with two tiers to match the workload: aster-code is priced for repository and coding work at $0.80 input and $1.60 output per 1M tokens, while aster-work covers research and everyday tasks at $0.40 input and $0.80 output per 1M tokens. Aster exposes standard Responses, Chat Completions, and Messages API endpoints, so it drops into existing code with minimal changes, and it plugs directly into coding tools including Claude Code, Codex, and Copilot CLI, plus third-party clients such as Aider, Cline, and Hermes. For teams comparing API providers on BestAIFor, the draw is predictable prepaid spend and tool-level integration rather than a new chat interface. If you already route model calls through one of the supported coding tools, Aster slots in as the backend without forcing you to rewrite your workflow.

Pay-per-token AI model access for coding assistants and research, routed through tools like Claude Code, Codex, and Copilot CLI.