claude-opus-4-5-20251101
Chat model by Anthropic.
Claude Opus 4.5 from Anthropic — 200K-token context, multimodal vision, function calling.
Context window
Maximum input context length.
200K
Max output
Maximum completion tokens per request.
64K
Maker
Anthropic
Specifications
Context window, ranked against other chat models
Proportional scale: 0 to 1M tokens. Not ranked, no published context window: glm-5.3-prime, qwen3-235b-a22b-2507, qwen3.7-max-2026-05-17, llama4-maverick-17b-instruct.
200.0K
tokens64K
tokenschat
Benchmarks & performance rankings
Published LLM Arena category placements and Elo ratings for claude-opus-4-5-20251101.
1451Elo
1499Elo
1469Elo
1458Elo
1442Elo
1477Elo
1473Elo
1466Elo
1479Elo
1437Elo
1466Elo
Source: huggingface.co · CC-BY-4.0 ·
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.
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-costheader, so you can reconcile spend per request.
More from Anthropic
Start building with claude-opus-4-5-20251101
One API key, three steps. Choose your tool to begin.
Get a key
Create API keySet your API key
export NROUTER_API_KEY="<YOUR_API_KEY>"Configure Claude Code
Choose a tool, then copy its setup from the panel.
FAQs
What is claude-opus-4-5-20251101?
Claude Opus 4.5 from Anthropic — 200K-token context, multimodal vision, function calling.
How much does claude-opus-4-5-20251101 cost?
claude-opus-4-5-20251101 is billed at the provider's list price on nRouter with no per-token markup — tokens settle at the exact upstream rate. Input and output rates are read live, so see the pricing section above for the current figures.
What is the context length of claude-opus-4-5-20251101?
claude-opus-4-5-20251101 supports a 200,000-token context window. It can generate up to 64,000 output tokens per request.
Does claude-opus-4-5-20251101 support tool calling and structured outputs?
Yes. claude-opus-4-5-20251101 supports tool calling (function calling), so it can invoke external tools and APIs during a conversation.
What inputs and outputs does claude-opus-4-5-20251101 support?
claude-opus-4-5-20251101 takes text and images as input and returns text as output.
How do I use claude-opus-4-5-20251101 via nRouter?
Use any OpenAI-compatible client: point it at https://api.nrouter.ai/v1 with your nRouter API key and set the model to "anthropic/claude-opus-4-5-20251101". The quick-start panel above has a copy-paste curl command for this model.
When was claude-opus-4-5-20251101 released?
claude-opus-4-5-20251101 was released on November 1, 2025.
Where is the claude-opus-4-5-20251101 documentation?
Start at nrouter.ai/docs. The quick-start guide (nrouter.ai/docs/getting-started/quick-start) covers API keys and your first request, and the API reference (nrouter.ai/docs/api-reference) lists every parameter.
What other text models does Anthropic have?
Other Anthropic text models on nRouter include Claude Opus 5.5 (nrouter.ai/models/claude-opus-5-5), Claude Fable 5.1 (nrouter.ai/models/claude-fable-5-1), Claude Opus 5 (nrouter.ai/models/claude-opus-5), Claude Fable 5 (nrouter.ai/models/claude-fable-5).