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Favicon for respan

Respan

Access 4 Respan models through the OpenRouter unified API including Span-02, Span-01, and Span-01 Lite. Compare pricing, context windows, benchmarks, and capabilities between different Respan models.

Respan tokens processed on OpenRouter

  • Favicon for respan
    Respan: Span-02Span-02
    954M tokens

    Span-02 is an open-weight decision model from Respan. It reads a state of text and images and answers the questions you define about it: picking one of several options, a yes/no/unknown call, or a score on a scale. It is suited for evaluation, guardrails, routing, and monitoring of LLM and agent outputs at scale. It is the successor to Span-01.

    by respanOct 16, 2026$0.01/M input tokens$0/M output tokens
  • Favicon for respan
    Respan: Span-01Span-01
    1.45B tokens

    Span-01 is a behavior scoring model from Respan. It reads a conversation span and returns, for each plain-language behavior you define, the probability that the behavior is present. It is suited for evaluation, guardrails, and monitoring of LLM and agent outputs at scale. It is the higher-accuracy tier of the family. Span-01 Lite is the free, lighter tier.

    by respanSep 26, 2026$0.02/M input tokens$0/M output tokens
  • Favicon for respan
    Respan: Span-01 LiteSpan-01 Lite
    4.68B tokens

    Span-01 Lite is the free, lighter tier of Span-01, a behavior scoring model from Respan. It returns, for each plain-language behavior you define, the probability that the behavior is present in a conversation span, and is suited for high-volume evaluation and monitoring where cost matters more than peak accuracy.

    by respanSep 26, 2026$0/M input tokens$0/M output tokens
  • Favicon for respan
    Respan: Span-01 Lite (free)Span-01 Lite (free)Free variant
    138M tokens

    Span-01 Lite is the free, lighter tier of Span-01, a behavior scoring model from Respan. It returns, for each plain-language behavior you define, the probability that the behavior is present in a conversation span, and is suited for high-volume evaluation and monitoring where cost matters more than peak accuracy.

    by respanSep 26, 2026$0/M input tokens$0/M output tokens

Frequently asked questions

OpenRouter serves 4 Respan models behind one OpenAI-compatible API. Create an OpenRouter API key, point your client at https://openrouter.ai/api/v1, and set the model to an ID such as respan/span-02. The quickstart has request examples for every supported SDK.

Span-01 Lite and Span-01 Lite (free) are available at no cost through the OpenRouter API.

Span-02 has the largest context window of any Respan model on OpenRouter, accepting up to 131,072 tokens per request.

Span-02 is the most recently added Respan model on OpenRouter, listed on October 16, 2026.