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💫 Cosmic Routers

While technically “routers” and not “models” - 💫 Cosmic Routers act through our OpenAI and Anthropic compatible API as if they were models themselves. They intelligently route every request to one of their underlying models.
💫 Orbit
costa/orbit
SWEBench: 72.1
Description: Orbit automatically selects the best model for your task. It analyzes your prompt and routes planning and architecture work to stronger reasoning models, while sending implementation and coding tasks to faster, lighter models — delivering high-quality results with minimal overhead.

Models Included:

    vertex/claude-opus-4.6

    vertex/claude-sonnet-4.5

    vertex/claude-haiku-4.5

    openai/gpt-5.2-codex

    openai/gpt-5-mini

    openai/gpt-4.1

    vertex/gemini-3-flash

    vertex/gemini-3-pro

    vertex/qwen3-coder

    vertex/glm-4.7

    vertex/kimi-k2

Stability: 🛰️ Stable

Last Changed 2026-02-06

Cosmic

💫 Nebula
costa/nebula
SWEBench: 75.9
Description: Nebula is the right choice when you want consistently top-quality results and zero surprises. Unlike other routers that balance cost, availability, or experimentation, Nebula routes your requests only across proven, top-tier models. It uses smart, weighted distribution to deliver reliable, senior-level output every time — making it ideal for production code, critical tasks, and team workflows where quality and consistency matter more than optimization.

Models Included:

    vertex/claude-opus-4.6

    vertex/claude-4.5-sonnet

    vertex/gemini-3-pro

    openai/gpt-5.2-codex

    vertex/qwen3-coder

    vertex/glm-4.7

Stability: 🛰️ Stable

Last Changed 2026-02-06

Cosmic

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Other Top Models

Costa provides access to almost 100 models - here are the top ones used for coding:
ModelAPIProviderSWEBenchPricing
… and many more. If you are logged in to Costa, you can see all of the models we provide access to from your Models Page.