Claude Opus 5

Opus 5 drops the Opus 4.x pricing to $5/$25 with 1M context and adaptive thinking. The default upgrade in the Opus family.

ChatAnthropic1M tokens$5.4503 / $27.2515 · 1M

anthropic/claude-opus-5

Context
1M tokens
Completion cap
128,000
Tools
Yes
JSON
Yes
Released
2026-07-24
ZDR
Verified

Call it from Geek Hub

Same OpenAI SDK. Change the base URL and the model id.

curl https://api.geekhub.mx/v1/chat/completions \
  -H "Authorization: Bearer $GEEKHUB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "anthropic/claude-opus-5",
    "messages": [{"role": "user", "content": "Hola"}]
  }'
Get an API key

Frequently asked questions

What is Claude Opus 5?
Opus 5 drops the Opus 4.x pricing to $5/$25 with 1M context and adaptive thinking. The default upgrade in the Opus family. Claude Opus 5 runs on the Geek Hub API (OpenAI-compatible). Model id: anthropic/claude-opus-5.
Is Claude Opus 5 free?
No. Input is $5.4503 per 1M tokens and output is $27.2515 per 1M tokens on Geek Hub (markup included).
What is the context length of Claude Opus 5?
Claude Opus 5 has a 1M tokens context window. It supports up to 128,000 completion tokens.
Does Claude Opus 5 support tool calling and structured outputs?
Claude Opus 5 accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.
When was Claude Opus 5 released?
Claude Opus 5 was released on 2026-07-24.

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