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Claude Sonnet 5

Premium
AnthropicChatclaude-sonnet-5

Anthropic workhorse — excellent coding + long-context. Introductory provider pricing until 2026-08-31 (operator repricing due 2026-09-01).

Anthropic introductory pricing through 2026-08-31; standard rate ($3/$15 per MTok provider-side) applies from 2026-09-01 — operator price update required then.

Capabilities

Tool callingVisionJSON modePrompt cache

Recommended for

  • coding
  • production workhorse
  • long-context tasks

Using this model through Conduix

Call it by its id, or let a routing alias pick it as part of a governed, cross-provider chain with automatic failover.

Direct model idclaude-sonnet-5

Reached by these routing aliases:

  • frontier-fastprimary pick · Claude Sonnet 5 → GPT-5.4 → Gemini 3.5 Flash → Grok 4.3
  • code-premiumfallback #2 · GPT-5.3 Codex → Claude Opus 4.8 → Claude Sonnet 5
  • code-balancedprimary pick · Claude Sonnet 5 → GPT-5.3 Codex → Codestral
  • agentic-codefallback #1 · GPT-5.3 Codex → Claude Sonnet 5 → Kimi K2.7 Code (Together)
  • document-aifallback #2 · Gemini 3.1 Pro → Gemini 3.5 Flash → Claude Sonnet 5

Routing relationships are operational — chains adapt to provider availability and your org's policy — not a contractual guarantee that a specific model serves a given request.

Get started

Conduix is OpenAI-API-compatible — point any OpenAI SDK at https://api.conduix.ai/v1 and pass claude-sonnet-5 as the model.

from conduix import Conduix

client = Conduix(api_key="cx_live_YOUR_KEY")  # base URL is built in

response = client.chat.completions.create(
    model="claude-sonnet-5",
    messages=[{"role": "user", "content": "Hello, Conduix!"}],
)
print(response.choices[0].message.content)
  • Tool calling: Pass a tools array and the model calls your functions.
  • Vision: Accepts image inputs — add image_url parts to a message.
  • JSON mode: Set response_format for guaranteed-valid JSON output.
  • Prompt cache: Repeated prompt context is billed at a reduced rate.

The response's x-conduix-model-served header tells you exactly which model answered. See the quickstart for keys, headers, and usage.