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Kilo Gateway

Claude Opus 5 API

Kilo Gateway
About

Build advanced reasoning agents with Claude Opus 5, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $10.00/1M input and $50.00/1M output tokens, native tool calling support. Access Claude Opus 5 via the Kilo Gateway API with up to 128K output tokens.

Capabilities

Input Modalities

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Output Modalities

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Reasoning
Yes
Structured Output
Yes
Tool Use
Yes
WeightsClosed
Temperature
Fixed
Attachment
Supported
Limits
Context Window
1.0M

Tokens

Input Limit
1.0M

Tokens

Max Output
128K

Tokens

Pricing

Standard (per 1M tokens)

Input
$10.00
Output
$50.00

Caching (per 1M tokens)

Read
$1.00
Write
$12.50
Frequently Asked Questions

Claude Opus 5 by Kilo Gateway costs $10.00 per 1M input tokens and $50.00 per 1M output tokens. Cached reads cost $1.00 per 1M tokens. Cache writes cost $12.50 per 1M tokens.

Model Details
ID
anthropic/claude-opus-5-fast
Provider
Kilo Gateway
Family
claude-opus
Release Date
Jul 24, 2026
Knowledge Cutoff
May 1, 2026
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
KILO_API_KEY
API Base URL
https://api.kilo.ai/api/gateway
Documentation