Free stealth reasoning model for coding, agentic work, and multimodal workflows available through OpenRouter
Stage
Not given
Not given
Founded
Not given
Not given
Based in
Not given
Not given
Pricing model
Not given
Free
Pricing
Not given
$0 per million input tokens, $0 per million output tokens during preview; TryOXAlpha hosted chat offers 5 free guest replies, 15 additional replies after account creation, and 100 AI replies for $4.99 one-time purchase
Key features
Text comparison with character, word, sentence, line, or paragraph-level precision
PDF comparison with highlighted changes
Excel spreadsheet comparison across multiple sheets
JSON, YAML, XML, and CSV structure comparison
Optional AI analysis explaining changes with cited facts
REST API for automation
URL and cURL command comparison
Word document comparison
1,048,576-token context window
Multimodal inputs: text, image, and video
Tool calling and structured outputs
Configurable reasoning efforts: low, high, and max
OpenAI-compatible API endpoint
Supported through OpenRouter model ID stealth/ox-alpha
131,072 output tokens maximum
What makes it different
Deterministic comparison engine with optional AI analysis for understanding meaning behind changes
Built for business users, everyday users, and developers without requiring technical expertise
Supports multiple document formats including PDFs and Excel spreadsheets in single comparison
REST API and agent-ready functions for automation and integration
1M token context window for repository-scale coding tasks
Multimodal support combining code with screenshots and diagrams
Free preview pricing during stealth release
Tool calling and structured output for agentic workflows
DiffFind
Ox Alpha