Miser Gateway optimizes AI model routing for cost efficiency

TL;DR. Miser, an open-source Rust-based AI gateway, routes OpenAI-compatible requests to the cheapest capable model via OpenRouter. - The system uses various classification modes, including heuristics and local LLMs, to determine the optimal model. - Benchmarks show Miser's heuristic mode is faster and more accurate at tier classification than OpenRouter Auto. - The gateway supports streaming responses and preserves unknown OpenAI request fields for flexible integration.

• Miser is an open-source, Rust-based AI gateway that routes OpenAI-compatible requests to the most cost-effective capable models via OpenRouter.
• It employs heuristic, local LLM, cloud LLM, and hybrid classification modes to intelligently select models.
• Performance evaluations indicate Miser's heuristic classification outperforms OpenRouter Auto in accuracy and latency for tier classification.
• The stateless gateway is designed for efficiency, forwarding streaming responses and exposing routing metadata via custom headers.
• Miser allows developers to configure tiered model policies and integrate with tools like OpenCode for unified API access.

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