Model introduction
Claude Opus 4.5 is the high-capability flagship of the Claude 4.5 generation for difficult reasoning, coding, and visual understanding.
Model capabilities
Specifications come from the cited model material. Catalog tags help identify access features; use the source documentation for exact limits.
Verified specifications
- Official positioning
- High-capability Claude 4.5 flagship
- Context window
- 200,000 tokens
- Input / output
- Text, image / Text
- Verified capabilities
- Extended thinking, vision, tool use
Sources: B.AI Claude Opus 4.5 model guide
Model pricing and access
Prices are read directly from the MoleAPI console catalog and shown by current billing group and context tier.
Your final charge follows the account group shown in the console.
Live pricing source
Pricing table
USD / 1M tokensStandardx1defaultInput $5 · Output $25
Input
$5 / 1M tokens
Output
$25 / 1M tokens
Cache read
$0.5 / 1M tokens
Cache write
$6.25 / 1M tokens
Discountx0.8discountInput $4 · Output $20
Input
$4 / 1M tokens
Output
$20 / 1M tokens
Cache read
$0.4 / 1M tokens
Cache write
$5 / 1M tokens
Relayx0.3relayInput $1.5 · Output $7.5
Input
$1.5 / 1M tokens
Output
$7.5 / 1M tokens
Cache read
$0.15 / 1M tokens
Cache write
$1.875 / 1M tokens
Access protocols
Available billing groups: Standard, Discount, Relay
- openai
- POST
- /v1/chat/completions
- anthropic
- POST
- /v1/messages
About claude-opus-4-5
This introduction is transcreated for clarity and cross-checked against the cited model material.
Claude Opus 4.5 is the high-capability flagship of the Claude 4.5 generation for difficult reasoning, coding, and visual understanding.
Core strengths
- Fits open-ended, difficult, accuracy-first problems.
- Supports vision, extended thinking, and tools.
- A mature 4.5 tool ecosystem helps compatibility with older projects.
Limitations
- Newer Opus 4.6 through 4.8 improve capability, context, and efficiency.
- High cost makes it a poor fit for simple batch or low-latency work.
Selection and production evaluation
Start a claude-opus-4-5 evaluation by mapping its official positioning to real work: Complex system analysis, deep coding work, scientific and business reasoning, and high-quality visual-document understanding. The first pass should exercise both its main strength, "Fits open-ended, difficult, accuracy-first problems.", and its known limitation, "Newer Opus 4.6 through 4.8 improve capability, context, and efficiency.", instead of relying on a single subjective general-chat comparison.
For access, MoleAPI currently lists openai, anthropic protocols and the Standard, Discount, Relay billing groups for this Anthropic model; the default price summary is Input $5 / 1M tokens · Output $25 / 1M tokens. Pricing, protocols, and groups come from the live catalog, so production planning should still price representative requests using real context length, output size, and cache-hit assumptions.
No independent ranking is shown unless it matches this exact model ID and reasoning profile, so nearby variants are not used as a proxy. Before launch, pin the model ID, prompt, and sample set, then compare task accuracy, structured-output validity, tool-call success, and timeout rates under the same conditions.
The model material on this page was last checked on 2026-07-24. When upstream model cards, context limits, or tool support change, update the cited bilingual facts before changing the recommendation; live MoleAPI price changes remain separate and update from the catalog automatically.
Code examples
These examples use MoleAPI's OpenAI-compatible endpoint and run after you replace the API key.
curl https://api.moleapi.com/v1/chat/completions \
-H "Authorization: Bearer $MOLEAPI_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-opus-4-5",
"messages": [{"role": "user", "content": "Hello"}]
}'Frequently asked questions
How is claude-opus-4-5 priced?
This page reads prices from the MoleAPI console API and updates with model prices, context tiers, and account groups.
How can I access claude-opus-4-5?
Protocols and endpoints come from the supported_endpoint_types field in the MoleAPI model catalog.
How do I switch an existing project to claude-opus-4-5?
Keep the MoleAPI API address and key, replace the model parameter with the model ID on this page, then check protocol-specific parameter differences.
Where do the claude-opus-4-5 model details come from?
Capabilities and limitations are checked against B.AI and the other cited pages. Pricing and available protocols come only from the MoleAPI console.