Skip to content
  • Models
  • Rankings
  • Ori
Sign Up
Sign Up
OpenRouterOpenRouter
© 2026 OpenRouter, Inc

Product

  • Chat
  • Rankings
  • Benchmarks
  • Apps
  • Discover
  • Models
  • Collections
  • Providers
  • Tools
  • Pricing
  • Business
  • Enterprise
  • Labs

Company

  • About
  • Blog
  • Careers
    Hiring
  • Privacy
  • Terms of Service
  • Trust Center
  • Support
  • Works With OR
  • Data
  • Brand

Developer

  • Documentation
  • API Reference
  • Developer Platform
  • Status

Connect

  • Discord
  • GitHub
  • LinkedIn
  • X
  • YouTube
  1. Home
  2. /
  3. Compare

Mercury 2.5 vs Space Bunny Alpha

Compare Mercury 2.5 from inception and Space Bunny Alpha from Stealth on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.

Mercury 2.5 vs Space Bunny Alpha: side-by-side summary

Mercury 2.5 and Space Bunny Alpha are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Mercury 2.5, from inception, has a 260,000-token context window and is priced at $0.04/M tokens input, $0.15/M tokens output on OpenRouter.

Space Bunny Alpha, from Stealth, has a 1,000,000-token context window and is free to use on OpenRouter.

Context window
  • Mercury 2.5: 260,000 tokens
  • Space Bunny Alpha: 1,000,000 tokens
Price
  • Mercury 2.5: $0.04/M tokens input, $0.15/M tokens output
  • Space Bunny Alpha: Free
Provided by
  • Mercury 2.5: inception
  • Space Bunny Alpha: Stealth
Favicon for inception
Mercury 2.5
Favicon for stealth
Space Bunny Alpha
Favicon for inception
Mercury 2.5
Favicon for stealth
Space Bunny Alpha

Overview

Mercury 2.5
Author
inception
Space Bunny Alpha
Author
Stealth
Mercury 2.5
Context length
260Ktokens
Space Bunny Alpha
Context length
1Mtokens
Mercury 2.5
Reasoning
Space Bunny Alpha
Reasoning
Mercury 2.5
Input modalities
Space Bunny Alpha
Input modalities
Mercury 2.5
Output modalities
Space Bunny Alpha
Output modalities
model details, providers and pricing
model details, providers and pricing
Mercury 2.5
Space Bunny Alpha