Fireworks' first cache-aware router model, available as a standalone serverless endpoint. It evaluates each user turn, estimates cost including prompt-cache impact, and routes between Claude Opus 5.5, GLM 5.3, and GLM 5.3 Flash to balance quality and spend.
FireRouter with Opus is a Fireworks router model offered as a serverless endpoint and through Fireworks’ CLI. It evaluates each user turn for task suitability and estimated cost, including the potential cost of losing prompt-cache hits when switching models. The product page lists Claude Opus 5.5, GLM 5.3, and GLM 5.3 Flash as its routing options. In Fireworks’ internal coding-traffic test, routed sessions had lower average cost than Opus-only sessions, with slightly lower graded-turn accuracy; those results are company-reported.
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