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 5 is Anthropic's most agentic Sonnet model yet, built for coding, tool use, reasoning, and long-horizon professional work at lower cost than Opus-class models.
GPT-5.6 Sol is OpenAI's frontier GPT-5.6 model for complex professional work, using the Responses API for reasoning and stateful context management.
from openai import OpenAI
client = OpenAI(
base_url="https://api.aigateway.sh/v1",
api_key="sk-aig-...",
)
# Claude Sonnet 5
client.chat.completions.create(
model="anthropic/claude-sonnet-5",
messages=[{"role":"user","content":"hello"}],
)
# GPT-5.6 Sol
client.chat.completions.create(
model="openai/gpt-5.6-sol",
messages=[{"role":"user","content":"hello"}],
)