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OpenRouter: Claude Opus 5 (Fast)

Openrouter
Streaming
1M
Context
$10.00
Input /1M
$50.00
Output /1M
2K
Max Output
Run API Call Open in Chat

OpenRouter: Claude Opus 5 (Fast)

Model Overview

Property Value
Model ID openrouter/anthropic/claude-opus-5-fast
Name Claude Opus 5 (Fast)
Provider OpenRouter
Released 2026-08-26

Description

Claude Opus 5 (Fast) is a capable language model available on LangMart via OpenRouter for general-purpose text generation and analysis tasks.

Specifications

Spec Value
Context Window 1,000,000 tokens
Max Completion 2,048 tokens
Modalities Text

Pricing

Type Price
Input $10.00 per 1M tokens
Output $50.00 per 1M tokens

Capabilities

  • Text Generation: Yes
  • Vision: No
  • Tool Use: No
  • Extended Reasoning: No
  • Streaming: Yes

Use Cases

  • General text generation
  • Question answering
  • Content creation
  • Analysis and summarization

Integration with LangMart

Gateway Support: Type 2 (Cloud), Type 3 (Self-hosted)

API Usage:

curl -X POST https://api.langmart.ai/v1/chat/completions \
  -H "Authorization: Bearer sk-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openrouter/anthropic/claude-opus-5-fast",
    "messages": [{"role": "user", "content": "Hello"}],
    "max_tokens": 2048
  }'
  • Variants available on LangMart

Last Updated: 2026-09-01