Pricing, context window, capabilities, and release date — pulled from each provider's public docs. Both are available via the same AIgateway OpenAI-compatible endpoint; flip the model string to switch.
Both models stream in parallel through your own AIgateway key. Tokens, latency, and cost update as they arrive.
| Claude Opus 4.7 anthropic/claude-opus-4.7 | Gpt-Oss-20b openai/gpt-oss-20b | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Family | Claude 4 | GPT OSS |
| Modality | text | text |
| Context window | 1,000,000 tok | 128,000 tok |
| Max output | 128,000 tok | 4,096 tok |
| Released | 2026-04-16 | 2025-08-05 |
| Input price | $5.00 /1M | $0.200 /1M |
| Output price | $25.00 /1M | $0.300 /1M |
| Cache read | $0.500 /1M | — |
| Tools | yes | yes |
| Streaming | yes | yes |
| Vision | yes | — |
| JSON mode | yes | yes |
| Reasoning | yes | yes |
| Prompt caching | yes | — |
Claude Opus 4.7 is Anthropic's most capable generally available model to date. It is highly autonomous and performs exceptionally well on long-horizon agentic work, knowledge work, vision tasks, and memory tasks.
OpenAI’s open-weight models designed for powerful reasoning, agentic tasks, and versatile developer use cases – gpt-oss-20b is for lower latency, and local or specialized use-cases.
from openai import OpenAI
client = OpenAI(
base_url="https://api.aigateway.sh/v1",
api_key="sk-aig-...",
)
# Try Claude Opus 4.7
client.chat.completions.create(
model="anthropic/claude-opus-4.7",
messages=[{"role":"user","content":"hello"}],
)
# Try Gpt-Oss-20b — same client, same key
client.chat.completions.create(
model="openai/gpt-oss-20b",
messages=[{"role":"user","content":"hello"}],
)