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Manifest Router adds support for GPT-5.5 and Pro

·2026.05.03 11:06

Key point

Manifest Router has begun supporting routing for GPT-5.5 and GPT-5.5 Pro.

Details

Manifest Router now newly supports GPT-5.5 and GPT-5.5 Pro.

  • You can send requests that need extended reasoning to GPT-5.5 Pro, while keeping the rest on cheaper models.
  • GPT-5.5 Pro is introduced as a top-tier model on reasoning and coding benchmarks, but since its cost is high, the key is dividing usage through routing.
  • GPT-5.5 can be used as a standard frontier model, or set as an automatic fallback for when the default model fails or hits a rate limit.
  • Manifest is a free, open-source LLM router, and you can connect OpenAI via an API Key or subscription to configure tiers. However, GPT-5.5 Pro is only available through API Key connections.
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