Early access: features, availability, and pricing may change as Kyara Intelligence evolves.

Above baseline Reasoning Obsolete

Anthropic: Claude Sonnet 4.5

The ultimate agentic model for extended autonomous operation and advanced coding workflows.

This is a legacy model, superseded by newer releases. It remains fully available to use.

Model ID anthropic/claude-sonnet-4.5

Quick start

Drop this model into any OpenAI-compatible client by setting the base URL, your API key, and the model ID below.

curl https://api.kyara-intelligence.com/v1/chat/completions \
  -H "Authorization: Bearer $KYARA_INTELLIGENCE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "anthropic/claude-sonnet-4.5",
    "messages": [
      { "role": "user", "content": "Hello!" }
    ]
  }'

See the full API reference

Overview

Anthropic's most advanced Claude Sonnet 4.5, optimized for real-world agents and coding workflows. Delivers state-of-the-art performance on coding benchmarks with improvements across system design, code security, and specification adherence. Features stronger agentic capabilities including improved tool orchestration, speculative parallel execution, and enhanced context tracking with a massive 1,000,000 token context window.

Specifications

Context / Memory 🌌 Extreme · 1M tokens

Cost vs baseline Above baseline

Input

6.9x

Output

13x

Input

54M

cr / M tokens

Output

270M

cr / M tokens

Multiples are relative to the catalog median; bars are scaled to the most expensive model.

Model ID

anthropic/claude-sonnet-4.5

Reasoning

Available

Status

Obsolete

Upstream moderation

All models on Kyara Intelligence are accessed through their original API providers (Mistral, Z.AI/GLM, xAI, DeepSeek, and others). Each provider's content policies and moderation apply to all requests.

Kyara routes API calls without modifying inputs or outputs, and does not log prompt or response content. Users are responsible for complying with the relevant provider's terms of service in addition to Kyara's terms.