# Claude: Opus 4 5 20251101 API

Anthropic's Claude: Opus 4 5 20251101 costs $5.006 per million input tokens and $25.029 per million output tokens from 1 independent provider. Each request through the OpenAI-compatible API goes to the offer with the lowest estimated charge that meets your rules.

- Providers compete for each request. The exchange ranks the offers that meet your rules by estimated charge. It fixes your maximum charge before the first token, and you pay for the tokens that the model uses.
- The OpenAI and Anthropic APIs. Use the OpenAI or Anthropic SDK that you have. Set the base URL and your key, and send claude-opus-4-5-20251101 as the model.
- Your data rules. Send x-liquid-retention: none and only offers whose provider does not keep your content compete for the request.

## About Claude: Opus 4 5 20251101

Claude: Opus 4 5 20251101 is a language model from Anthropic. Its release date is 24 November 2025. Flagship Claude model for deep reasoning, coding, and long-horizon agents. Its weights are not public. Its training data ends in May 2025. It takes text and images and gives text. The largest offer takes 200,000 input tokens. 1 independent provider quotes it on this exchange now.

Description, release date and licence: models.dev (https://models.dev/)

## Facts

- Model name: claude-opus-4-5-20251101
- Maker: Anthropic
- Context window: 200K tokens
- Input price: $5.006 per million tokens
- Output price: $25.029 per million tokens
- Providers: 1 independent provider
- Regions: us

## Providers

- [Architect](https://liquidinference.ai/providers/805445a7-0e40-4c1b-9baf-7b3b01e30e42.md): us, $5.006 input and $25.029 output per million tokens, $0.501 cache read, $6.257 cache write, $10.012 one-hour cache write per million tokens, 200K tokens of context

## Scores

- HLE: 13.2, #213 of 465
- GPQA: 81.0, #155 of 432
- AA-LCR: 70.7, #163 of 409
- Terminal-Bench Hard: 40.9, #38 of 311
- LiveCodeBench: 73.8, #44 of 250
- AIME 2025: 62.7, #72 of 199
- MMLU-Pro: 88.9, #3 of 253
- τ²-Bench: 86.3, #78 of 313
- IFBench: 43.0, #188 of 321
- SimpleQA Verified: 45.7, #51 of 172

Scores: Artificial Analysis (https://artificialanalysis.ai/)

Scores: Epoch AI, 'Capabilities & Benchmarking' (https://epoch.ai/benchmarks)

## Request

```sh
curl https://router.inference.ai.exchange/v1/chat/completions \
  -H "Authorization: Bearer $LIQUID_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-opus-4-5-20251101",
    "messages": [{"role":"user","content":"Say hello."}]
  }'
```

## Questions

### What is Claude: Opus 4 5 20251101?

Claude: Opus 4 5 20251101 is a language model from Anthropic. Its release date is 24 November 2025. Flagship Claude model for deep reasoning, coding, and long-horizon agents. Its weights are not public. Its training data ends in May 2025.

### How much does Claude: Opus 4 5 20251101 cost?

Offers now ask $5.006 per million input tokens and $25.029 per million output tokens. A job pays for the tokens it uses. The exchange picks the cheapest eligible offer.

### What is the context length of Claude: Opus 4 5 20251101?

The largest offer takes 200,000 input tokens. A smaller offer can take less. The exchange skips an offer that cannot take your message.

### What can Claude: Opus 4 5 20251101 do?

Its providers list Vision, Reasoning effort, JSON object, JSON schema, Frequency penalty, Logit bias, Log probabilities, Min-p sampling, Presence penalty, Repetition penalty, Seed, Stop sequences, Top-k sampling, Top-p sampling, Text, Tools.

### What inputs and outputs does Claude: Opus 4 5 20251101 support?

Text · Images → Text.

### Which providers serve Claude: Opus 4 5 20251101?

1 independent provider quote it now, with 1 offer. The table above ranks them by the cost of a typical job.

### How do I call Claude: Opus 4 5 20251101?

Send "claude-opus-4-5-20251101" as the model in an OpenAI or Anthropic request. The API section links to setup steps for each client.

### When was Claude: Opus 4 5 20251101 released?

Its creator released it on 24 November 2025.

### When was Claude: Opus 4 5 20251101 listed?

The exchange first listed it on 10/10/2026. This is not its release date.

## Related pages

- [This page in a browser](https://liquidinference.ai/models/claude-opus-4-5-20251101)
- [Claude: Haiku 5 5](https://liquidinference.ai/models/claude-haiku-5-5.md)
- [Claude: Haiku Latest](https://liquidinference.ai/models/claude-haiku-latest.md)
- [Claude: Haiku 4 5 20251001](https://liquidinference.ai/models/claude-haiku-4-5-20251001.md)
- [Claude: Haiku 4 5](https://liquidinference.ai/models/claude-haiku-4-5.md)
- [Claude: Haiku 4 5:thinking](https://liquidinference.ai/models/claude-haiku-4-5%3Athinking.md)
- [Claude: Sonnet 5 5:thinking](https://liquidinference.ai/models/claude-sonnet-5-5%3Athinking.md)
- [Set up a client](https://liquidinference.ai/connect/claude-opus-4-5-20251101)
- [All models](https://liquidinference.ai/models)
- [Providers](https://liquidinference.ai/providers.md)
- [Discover the best model for your budget](https://liquidinference.ai/discover)
- [Quickstart](https://liquidinference.ai/docs/quickstart.md)
- [llms.txt: the index of every page, as Markdown](https://liquidinference.ai/llms.txt)
- [llms-full.txt: every page in one file](https://liquidinference.ai/llms-full.txt)