Pricing per million tokens, context window, capabilities — pulled from each provider's public docs. All 2 are available via the same AIgateway OpenAI-compatible endpoint; flip the model string to switch.
Claude Opus 4.5 brings further reasoning, coding, and agentic improvements over Opus 4.1, with stronger tool use and tighter instruction following.
Claude Opus 4.6 is Anthropic's flagship language model built for complex, multi-step work in coding, financial analysis, and legal reasoning. It uses extended thinking to work through complex problems carefully and features a one million token context window.
from openai import OpenAI
client = OpenAI(
base_url="https://api.aigateway.sh/v1",
api_key="sk-aig-...",
)
# Claude Opus 4.5
client.chat.completions.create(
model="anthropic/claude-opus-4.5",
messages=[{"role":"user","content":"hello"}],
)
# Claude Opus 4.6
client.chat.completions.create(
model="anthropic/claude-opus-4.6",
messages=[{"role":"user","content":"hello"}],
)