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Anthropic: Claude Sonnet 4.5

Anthropic
Vision Tools Streaming
200K
Context
$3.00
Input /1M
$15.00
Output /1M
N/A
Max Output
Run API Call Open in Chat

Anthropic: Claude Sonnet 4.5

Model Overview

Property Value
Model ID anthropic/claude-sonnet-4-5-20250514
Provider Anthropic
Category Chat
Released TBD
Status Active
Flagship No

Description

Claude Sonnet 4.5 is a conversational AI model designed for multi-turn dialogue and interactive tasks. Developed by Anthropic, this premium model offers excellent quality and balanced performance across diverse tasks.

Specifications

Property Value
Context Window 200000 tokens
Max Output Tokens 8192 tokens
Knowledge Cutoff N/A
Modalities Text
Speed Tier Fast
Quality Tier Premium

Pricing

Type Price
Input $3.00 per 1M tokens
Output $15.00 per 1M tokens

Capabilities

Capability Supported
Vision/Image Input Yes
Tool/Function Calling Yes
JSON Mode Yes
Streaming Yes
System Prompt Yes

Use Cases

  • Conversational AI and chatbots
  • Customer support automation
  • Interactive content generation
  • Real-time dialogue systems
  • Multi-turn reasoning and problem-solving

Strengths

  • Premium quality with excellent accuracy and nuance
  • Fast execution suitable for real-time applications
  • Massive context window for extended document processing
  • Vision capabilities for image understanding and analysis
  • Function calling for structured tool integration
  • JSON mode for reliable structured output

Limitations

  • Requires appropriate use cases matching model specialization
  • Performance depends on prompt quality and task complexity

Integration with LangMart

Gateway Support:

  • Type 1 (Full Platform): Yes
  • Type 2 (Cloud Gateway): Yes
  • Type 3 (Self-hosted): Yes

API Endpoint:

curl -X POST https://api.langmart.ai/v1/chat/completions \
  -H "Authorization: Bearer sk-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "anthropic/claude-sonnet-4-5-20250514",
    "messages": [{"role": "user", "content": "Hello"}],
    "max_tokens": 1024
  }'

OpenAI Compatibility: Full compatibility with OpenAI API format.

Models in this category and from this provider are available in the LangMart marketplace.

Additional Resources

Data Source: LangMart Provider Models Database Last Updated: 2026-01-02