Stealth: Claude Opus 4.8 (20% off) API
About
Build advanced reasoning agents with Stealth: Claude Opus 4.8 (20% off), a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $4.00/1M input and $20.00/1M output tokens, native tool calling support. Access Stealth: Claude Opus 4.8 (20% off) via the Kilo Gateway API with up to 128K output tokens.
Capabilities
Input Modalities
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Output Modalities
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Limits
Context Window
1.0M
Tokens
Input Limit
1.0M
Tokens
Max Output
128K
Tokens
Pricing
Standard (per 1M tokens)
Input
$4.00
Output
$20.00
Reasoning (per 1M tokens)
Output
Free
Caching (per 1M tokens)
Read
$0.40
Write
$5.00
Frequently Asked Questions
Stealth: Claude Opus 4.8 (20% off) by Kilo Gateway costs $4.00 per 1M input tokens and $20.00 per 1M output tokens. Cached reads cost $0.40 per 1M tokens. Cache writes cost $5.00 per 1M tokens.
Model Details
ID
stealth/claude-opus-4.8
Provider
Kilo GatewayFamily
claude-opus
Release Date
Aug 26, 2025
Knowledge Cutoff
N/A
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
KILO_API_KEY
API Base URL
https://api.kilo.ai/api/gateway