Anthropic

Claude APIs for Opus, Sonnet & Haiku

Build reasoning agents, coding tools, and high-volume AI workflows with the Claude models currently available through LinkModel.

Provider overview

About Anthropic

Anthropic develops the Claude family of language models. Opus targets the most capable reasoning and agent workloads, Sonnet balances intelligence, speed, and cost, and Haiku is optimized for fast, efficient tasks. LinkModel only presents a model as available when it appears in the live catalog.

Explore Anthropic Claude APIs

Choose Opus for the most demanding reasoning and agent work, Sonnet for balanced production workloads, or Haiku for speed and efficiency. This catalog only shows Anthropic models currently listed on LinkModel.

4 models listed

Claude language and agent APIs

Compare live Claude models for advanced reasoning, coding, tool use, long-running agents, and efficient high-volume language tasks.

Claude Opus4.8
AnthropicChat

Anthropic's flagship LLM for agentic coding, multidisciplinary reasoning, and knowledge work, with sharper judgment and stronger honesty, a 1M-token context window, and fast mode—built for code migration, deep research, and legal/financial analysis.

Claude Sonnet4.6
AnthropicChat

Anthropic's high-value mid-tier model approaching Opus-level performance on coding, computer use, and agent orchestration, with 1M context and adaptive thinking — built for scaled coding, desktop automation, and enterprise agents.

Claude Opus4.7
AnthropicChat

Anthropic's flagship LLM excelling at long-horizon agents and coding, scoring 87.6% on SWE-bench Verified, with 1M context, adaptive thinking, and high-res vision — for complex coding and enterprise workflows.

Claude Opus4.6
AnthropicChat

Anthropic's frontier flagship model built for deep reasoning, long-horizon agentic coding, and enterprise knowledge work — tops Terminal-Bench 2.0 and HLE with 1M context and adaptive thinking for the hardest tasks.

Compare Claude models and API pricing

Start with Claude Opus 4.8 for the hardest reasoning, coding, and long-running agent workloads; Claude Sonnet 4.6 for balanced production intelligence; or Claude Haiku 4.5 when speed and cost efficiency matter most. Recommendations only appear when the matching model is live in LinkModel's catalog.

Claude language and agent APIs

Model

Claude Opus 4.8

Complex reasoning, coding, and long-running agents

Best for

The highest-capability Claude tier for difficult analysis, advanced software engineering, and long-running agent workflows.

Key capabilities

Advanced reasoning · coding · tool use · long-running agents

Official source ↗
Model

Claude Sonnet 4.6

Balanced production agents and coding

Best for

A balanced Claude tier for production agents, coding, and general knowledge work where capability, latency, and cost all matter.

Key capabilities

Reasoning · coding · agents · balanced latency and cost

Official source ↗

What can you build with Anthropic APIs on LinkModel?

Use the live Claude family for complex reasoning, software development, agents, and efficient production automation from one account.

Software engineering agents

Build coding assistants and autonomous engineering workflows that can reason across large codebases, use tools, and complete multi-step tasks.

Research and knowledge workflows

Analyze complex material, synthesize findings, and produce structured outputs with the live Claude tier that fits the required depth and latency.

Customer and operations automation

Power assistants, classification, extraction, and tool-driven business processes while balancing response quality, speed, and cost.

Why run Anthropic models through LinkModel?

Access supported Claude tiers alongside other leading providers while keeping credentials, usage, and billing in one workflow.

One key across live Claude tiers

Use one LinkModel API key for the supported Opus, Sonnet, and Haiku models enabled in the live catalog.

Anthropic alongside other providers

Compare or combine Claude with other language models without maintaining a separate provider account and billing workflow.

Centralized usage and billing

Review usage and pay-as-you-go charges in one LinkModel account while selecting the Claude tier that fits each workload.

Integrate Claude APIs

Use one LinkModel credential to select a live Claude model, send the matching request, and monitor usage from the same account.

  1. Authenticate with one API key

    Create a LinkModel API key and use it to authenticate requests for the Anthropic models enabled for your account.

  2. Choose a live Claude model

    Select an available Opus, Sonnet, or Haiku model and open its model page to confirm the current identifier, request schema, and pricing.

  3. Send, observe, and iterate

    Submit the request, handle the response, and compare usage before moving the workflow into production.

FAQ

Frequently asked questions.

Sources and editorial information

Editorial review

Model capabilities and selection guidance are reviewed against the official Anthropic sources listed here.

Editorial content reviewed: September 1, 2026

Anthropic and its model names belong to their respective owners. LinkModel is an independent API aggregation platform and does not imply a formal relationship.