StarAPI

claude-fable-5 vs claude-opus-5

	claude-fable-5	claude-opus-5
Providers	Anthropic	Anthropic
Input $/M	$10.00	$5.00
Output $/M	$50.00	$25.00
Output multiplier	×5.00	×5.00
Context window	1M tokens	1M tokens
Intelligence index	—	54.1
Coding index	—	78.0

What the numbers mean

claude-opus-5 is roughly 2.0× cheaper on input than claude-fable-5. If your workload passes the quality bar on the cheaper model, that gap compounds across every request; route to claude-fable-5 deliberately rather than by default.

Tags: claude-fable-5 — Chat, Reasoning, Coding, Vision · claude-opus-5 — Chat, Reasoning, Coding, Vision

Code

from openai import OpenAI
client = OpenAI(base_url="https://starseaapi.com/v1", api_key="sk-...")

# claude-fable-5
client.chat.completions.create(model="claude-fable-5", messages=[{"role":"user","content":"Hi"}])

# claude-opus-5
client.chat.completions.create(model="claude-opus-5", messages=[{"role": "user", "content": "Hi"}])

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