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Xpersona

Claude Opus 4.8 API

Xpersona
About

Build advanced reasoning agents with Claude Opus 4.8, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $1.50/1M input and $9.25/1M output tokens, native tool calling support. Access Claude Opus 4.8 via the Xpersona API with up to 128K output tokens.

Capabilities

Input Modalities

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Output Modalities

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Reasoning
Yes
Structured Output
No
Tool Use
Yes
WeightsClosed
Temperature
Fixed
Attachment
Supported
Limits
Context Window
200K

Tokens

Input Limit
200K

Tokens

Max Output
128K

Tokens

Pricing

Standard (per 1M tokens)

Input
$1.50
Output
$9.25

Reasoning (per 1M tokens)

Output
$9.25

Caching (per 1M tokens)

Read
$0.15
Frequently Asked Questions

Claude Opus 4.8 by Xpersona costs $1.50 per 1M input tokens and $9.25 per 1M output tokens. Cached reads cost $0.15 per 1M tokens.

Model Details
ID
claude-opus-4-8
Provider
Xpersona
Family
claude-opus
Release Date
May 28, 2026
Knowledge Cutoff
Jan 1, 2026
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
XPERSONA_API_KEY
API Base URL
https://www.xpersona.co/v1
Documentation