Models / Claude Opus 4 5 20251101ID: anthropic/claude-opus-4-5-20251101
chat model by Anthropic

Claude Opus 4 5 20251101

Claude Opus 4.5 is an intelligent reasoning model designed for multi-day software development tasks, autonomous agents, and deep analytical research.

Certified & verified by nRouter· facts checked 2026-09-14 against 2 official sources

PlaygroundQuick Start
Context window200K
Max output64K
Maker

Anthropic

Served On

Anthropic

Specifications

Context window, ranked against other chat models

Proportional scale: 0 to 200K tokens. Not ranked, no published context window: glm-5.3-prime, qwen3-235b-a22b-2507, qwen3.7-max-2026-05-17, claude-opus-5-5.

Context window

200.0K

tokens
Max output

64K

tokens
Modality

chat

Vision
Function calling
System prompt

Benchmarks

LMSYS Chatbot Arena (text)Rank #41 · Score 1469
Source: arena.ai · Leaderboard: 2026-09-112026-09-13

Pricing

Rates are read live

Pricing for claude-opus-4-5-20251101 is fetched from the live catalogue on load, so it is never served from a cache that could outlive a repricing.

Provider-Reported Capabilities

What the hosting provider reports for this model, shown as it was returned. nRouter adds nothing to this report and infers nothing that is missing from it.

Batch batch
Effort effort
Low low
Max max
High high
Xhigh xhigh
Medium medium
Thinking thinking
Types types
Enabled enabled
Adaptive adaptive
Disabled disabled
Citations citations
PDF input pdf_input
Image input image_input
Code execution code_execution
Context management context_management
Compact (2026-01-12) compact_20260112
Clear thinking (2025-10-15) clear_thinking_20251015
Clear tool uses (2025-09-19) clear_tool_uses_20250919
Structured outputs structured_outputs

Availability

Not enough data yet

We have not collected enough health probes for this model to publish an uptime or latency figure. A percentage from a handful of samples is fabricated precision, so none is shown until the sample count supports one.

How Claude Opus 4 5 20251101 is billed

Billed at the provider's list price, with no per-token markup.

Exact list price
Tokens settle at the published rate of the model that served your call.
Cache discounts passed through
Provider prompt-caching discounts reach your balance with no added fee.
Cost on every response
Each response carries the x-nr-request-cost header, so you can reconcile spend per request.

More from Anthropic

claude-opus-5-5claude-3-opus-20240229-v1claude-3-7-sonnet-20250219claude-fable-5-1

Start building with claude-opus-4-5-20251101

One API key, three steps. Choose your tool to begin.

  1. Get a key

    Create API key

  2. Set your API key

    export NROUTER_API_KEY="<YOUR_API_KEY>"

  3. Configure Claude Code

    Choose a tool, then copy its setup from the panel.

npm install -g @anthropic-ai/claude-code
Claude Code · anthropic/claude-opus-4-5-20251101
# Point Claude Code to nRouter gateway
export ANTHROPIC_BASE_URL="https://api.nrouter.ai"
export ANTHROPIC_API_KEY="$NROUTER_API_KEY"

# Launch with anthropic/claude-opus-4-5-20251101
claude --model anthropic/claude-opus-4-5-20251101