AnthropicCertifiedReleased 02/05/2026

Claude Opus 4.6

Opus 4.6 is the world’s best model for coding and professional work, built to power agents that take on whole categories of real-world work. It excels across the entire SDLC, breaking through on hard problems, identifying complex bugs, and demonstrating deeper codebase understanding. It also delivers a step-change in knowledge work, with near-production-ready documents, presentations, and spreadsheets on the first pass.

View API reference ↓
Input / output priceFrom$5.00 / $25.00per 1M
24h uptime99.91%
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.inferencebureau.com/v1",
  apiKey: process.env.IB_API_KEY,
});

const res = await client.chat.completions.create({
  model: "anthropic/claude-opus-4.6",
  messages: [{ role: "user", content: "Why is the sky blue?" }],
});

console.log(res.choices[0].message.content);

Providers

Dispatch routes requests across these providers and fails over between them without changing the model. Restrict or order providers with team Directives. Prices are gateway list prices before the platform fee.

ProviderContextMax outputLatencyThroughputInputOutputCacheCapabilitiesZDRNo trainingRegionsStatus
Amazon Bedrock1M128K0.8 s79 tps$5.00$25.00Read $0.50Write $6.257 featuresYesYesUS EUCertified
Anthropic1M128K1.2 s42 tps$5.00$25.00Read $0.50Write $6.257 featuresYesYesUSCertified
Google Vertex AI1M128K1.2 s52 tps$5.00$25.00Read $0.50Write $6.257 featuresYesYesUS EUCertified

Uptime

24 hours

Request success rate per provider.

Amazon Bedrock100.00%
Anthropic99.73%
Google Vertex AI100.00%

Throughput

last hour

P50 output tokens per second.

Amazon Bedrock79 tps
Google Vertex AI52 tps
Anthropic42 tps

Latency

last hour

P50 time to first token.

Amazon Bedrock0.8 s
Anthropic1.2 s
Google Vertex AI1.2 s

Getting started

Create a key on the API Keys page and set it as IB_API_KEY. See the quickstart.

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.inferencebureau.com/v1",
  apiKey: process.env.IB_API_KEY,
});

const res = await client.chat.completions.create({
  model: "anthropic/claude-opus-4.6",
  messages: [{ role: "user", content: "Why is the sky blue?" }],
});

console.log(res.choices[0].message.content);

Top-level parameters

Standard Chat Completions parameters work as documented. These have model-specific behavior.

ParameterTypeRequiredDescription
modelstringYesModel ID in the form creator/model, e.g. anthropic/claude-opus-4.6. Must be allowed by your team's Directives.
max_tokensnumberNoHard cap on generated tokens, and the basis for the balance reserved per request. Claude Opus 4.6 supports up to 128,000 output tokens.
reasoning{ effort: 'low' | 'medium' | 'high' }NoReasoning effort, mapped to the provider's native configuration. Reasoning tokens count toward output usage.
toolsTool[]NoFunction definitions the model can call. Tool calls are returned in choices[].message.tool_calls.
Supportedmax_tokenstemperaturestoptoolstool_choicereasoninginclude_reasoningresponse_formatstructured_outputs

Input limits

InputSourcesLimits
Text—Prompt and response share the 1M-token context window
ImageURL, base64Sent as image_url content parts; counts as input tokens
PDFURL, base64Sent as file content parts; counts as input tokens

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