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 Sonnet 4.6 is Anthropic's latest balanced model offering strong coding, reasoning, and agentic capabilities with improved 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.
Source: each provider's published benchmarks. Higher is better. Run an eval to compare on your own data.
from openai import OpenAI
client = OpenAI(
base_url="https://api.aigateway.sh/v1",
api_key="sk-aig-...",
)
# Claude Sonnet 4.6
client.chat.completions.create(
model="anthropic/claude-sonnet-4.6",
messages=[{"role":"user","content":"hello"}],
)
# Claude Opus 4.6
client.chat.completions.create(
model="anthropic/claude-opus-4.6",
messages=[{"role":"user","content":"hello"}],
)