How much does Claude Opus 5.5 cost on AIKeys?

The official price is $4.00 per million input tokens and $20.00 per million output tokens. On AIKeys you pay the cheapest live ask from a publisher, and an ask is never more than half the official price. The table on this page shows the current lowest ask.

What model id do I send for Claude Opus 5.5?

Send cc/claude-opus-5-5 as the model. The id must match exactly. GET https://api.aikeys.co/v1/models lists every id your key can call.

Can I call Claude Opus 5.5 with the OpenAI or the Anthropic SDK?

Yes. The same key works on chat completions, messages, and responses. Point the OpenAI SDK at https://api.aikeys.co/v1, or the Anthropic SDK at https://api.aikeys.co. The proxy converts the request to the format the upstream uses.

What happens if no publisher is serving Claude Opus 5.5?

The call returns 503 with the code no_capacity. You are not charged for it.

Is there a monthly plan?

No. You top up a balance and each settled request draws from it. Stop calling and the charges stop.

Model

Claude Opus 5.5 API pricing.

Model idcc/claude-opus-5-5
UpstreamClaude Code
Endpointschat · messages · responses

Price

What Claude Opus 5.5 costs.

You pay the cheapest live ask from a publisher. An ask is never more than half the official price. Prices update while this page is open.

Per million tokens	Official	Lowest ask on AIKeys
Input	$4.00	$2.00−50%
Output	$20.00	$10.00−50%

Example: 10M input and 2M output tokens cost $40.00 at the lowest ask, against $80.00 at the official price.

Create a key All prices

Call it

Send cc/claude-opus-5-5 as the model.

One key works with chat completions, messages, and responses. Set AIKEYS_CO_KEY to an inference key. The full reference is on the API page.

curl https://api.aikeys.co/v1/chat/completions \
  -H "Authorization: Bearer $AIKEYS_CO_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"cc/claude-opus-5-5","messages":[{"role":"user","content":"Hello"}]}'

curl https://api.aikeys.co/v1/chat/completions \
  -H "Authorization: Bearer $AIKEYS_CO_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"cc/claude-opus-5-5","messages":[{"role":"user","content":"Hello"}]}'

curl https://api.aikeys.co/v1/messages \
  -H "x-api-key: $AIKEYS_CO_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "Content-Type: application/json" \
  -d '{"model":"cc/claude-opus-5-5","max_tokens":256,"messages":[{"role":"user","content":"Hello"}]}'

curl https://api.aikeys.co/v1/messages \
  -H "x-api-key: $AIKEYS_CO_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "Content-Type: application/json" \
  -d '{"model":"cc/claude-opus-5-5","max_tokens":256,"messages":[{"role":"user","content":"Hello"}]}'

import os
from openai import OpenAI

client = OpenAI(base_url="https://api.aikeys.co/v1", api_key=os.environ["AIKEYS_CO_KEY"])
reply = client.chat.completions.create(
    model="cc/claude-opus-5-5",
    messages=[{"role": "user", "content": "Hello"}],
)
print(reply.choices[0].message.content)

import os
from openai import OpenAI

client = OpenAI(base_url="https://api.aikeys.co/v1", api_key=os.environ["AIKEYS_CO_KEY"])
reply = client.chat.completions.create(
    model="cc/claude-opus-5-5",
    messages=[{"role": "user", "content": "Hello"}],
)
print(reply.choices[0].message.content)

import os
from anthropic import Anthropic

client = Anthropic(base_url="https://api.aikeys.co", api_key=os.environ["AIKEYS_CO_KEY"])
message = client.messages.create(
    model="cc/claude-opus-5-5",
    max_tokens=256,
    messages=[{"role": "user", "content": "Hello"}],
)
print(message.content[0].text)

import os
from anthropic import Anthropic

client = Anthropic(base_url="https://api.aikeys.co", api_key=os.environ["AIKEYS_CO_KEY"])
message = client.messages.create(
    model="cc/claude-opus-5-5",
    max_tokens=256,
    messages=[{"role": "user", "content": "Hello"}],
)
print(message.content[0].text)

FAQ

Questions about Claude Opus 5.5.

How much does Claude Opus 5.5 cost on AIKeys?: The official price is $4.00 per million input tokens and $20.00 per million output tokens. On AIKeys you pay the cheapest live ask from a publisher, and an ask is never more than half the official price. The table on this page shows the current lowest ask.
What model id do I send for Claude Opus 5.5?: Send cc/claude-opus-5-5 as the model. The id must match exactly. GET https://api.aikeys.co/v1/models lists every id your key can call.
Can I call Claude Opus 5.5 with the OpenAI or the Anthropic SDK?: Yes. The same key works on chat completions, messages, and responses. Point the OpenAI SDK at https://api.aikeys.co/v1, or the Anthropic SDK at https://api.aikeys.co. The proxy converts the request to the format the upstream uses.
What happens if no publisher is serving Claude Opus 5.5?: The call returns 503 with the code no_capacity. You are not charged for it.
Is there a monthly plan?: No. You top up a balance and each settled request draws from it. Stop calling and the charges stop.

Claude Code

Other models on this upstream.

All models