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claude-opus-5-5

Input price from
$1.60/1M tokens
Output price from
$8.00/1M tokens
Context window
1M
Modalities
Text · Image · PDF → Text
Get an API key

Pricing

API call price5% OFF

Input

$3.80

Output

$19.00

Cache write

$4.75

Cache read

$0.19
Claude Code60% OFFMatches the headline from-price

Only via Claude Code; default public-channel fallback may bill at the API price.

Input

$1.60

Output

$8.00

Cache write

$2.00

Cache read

$0.08

All prices are per million tokens and already include the discount shown above.

These public prices exclude group discounts. Your billed price may be lower based on your group.

Integration & capabilities

Supported protocols

Messages API
Compatible formatAnthropic
Routes
POST /v1/messages
POST /v1/messages/count_tokens
FeaturesStreaming · Prompt caching · Function calling · System messages
Request parametersmodel, messages, system, tools, stream, metadata

cURL Example

curl -X POST https://api.openmodel.ai/v1/messages \
  -H "Content-Type: application/json" \
  -H "x-api-key: $API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -d '{
    "model": "claude-opus-5-5",
    "max_tokens": 1024,
    "messages": [
      {"role": "user", "content": "Hello"}
    ]
  }'

Supported capabilities

Function Calling
Function calling (also known as tool calling) provides a powerful and flexible way for models to interface with external systems and access data outside their training data.
Tool Choice
By default the model will determine when and how many tools to use. You can force specific behavior with the tool_choice parameter.
Structured Outputs
Ensures the model will always generate responses that adhere to your supplied JSON Schema.
Reasoning
Reasoning models use internal reasoning tokens before producing a response.
Prompt Caching
Optimizes API usage by allowing resuming from specific prefixes in your prompts. This significantly reduces processing time and costs for repetitive tasks or prompts with consistent elements.
Vision
Models can process image inputs and analyze them — a capability known as vision.
PDF Input
Ask the model about any text, pictures, charts, and tables in PDFs you provide.
Computer Use
Interact with computer environments through screenshot capabilities and mouse/keyboard control for autonomous desktop interaction.

Context & limits

Context window

1M

Max output tokens

128K

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