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OpenRouter

Body Builder (beta) API

OpenRouter
About

Process massive datasets with Body Builder (beta), featuring an expansive 128K context window for long-document analysis. This model delivers available completely free of charge. Access Body Builder (beta) via the OpenRouter API with up to 128K output tokens.

Capabilities

Input Modalities

text

Output Modalities

text
Reasoning
No
Structured Output
No
Tool Use
No
WeightsClosed
Temperature
Fixed
Attachment
Not Supported
Limits
Context Window
128K

Tokens

Input Limit
128K

Tokens

Max Output
128K

Tokens

Pricing

Standard (per 1M tokens)

Input
Free
Output
Free
Frequently Asked Questions

Body Builder (beta) by OpenRouter costs Free per 1M input tokens and Free per 1M output tokens.

Model Details
ID
openrouter/bodybuilder
Provider
OpenRouter
Family
Release Date
Dec 5, 2025
Knowledge Cutoff
N/A
API Integration
NPM Package
@openrouter/ai-sdk-provider
Environment Variables
OPENROUTER_API_KEY
API Base URL
https://openrouter.ai/api/v1
Documentation