Text modelsAnthropic

Claude Opus 4.5: model and API overview

Claude Opus 4.5 is part of Anthropic's Claude family. This card is for a text workflow. It can handle coding, code analysis, and agentic development tasks. Consider it when you need repository work, code repair, or a multi-step engineering task. Input: Text, Images; output: Text.

External model reference page. This page does not confirm availability in Neiron.

Capabilities

Claude Opus 4.5: For text workflows, it can handle coding, code analysis, and agentic development tasks.

Input: Text, Images; output: Text.

Purpose: Language model; developer: Anthropic; region: United States.

Use cases

Choose it for a text workflow: Claude Opus 4.5, when you need repository work, code repair, or a multi-step engineering task.Compare Claude Opus 4.5 with related Claude models if the task allows a different input or output format.Before starting, confirm the input format and expected result (text, code, or an implementation plan).

Reviewed facts

Developer

Anthropic

Purpose

Language model, Reasoning, Coding

Input

Text, Images

Output

Text

Geography

United States

Verified

2026-08-26

Benchmarks

No comparable benchmark is recorded in this card.

Sources

What to verify before use

Parameters, limits, licensing terms, and, where applicable, pricing for Claude Opus 4.5 change over time. Check the official Anthropic documentation before integrating.

Expected result: text, code, or an implementation plan. For a different input or output, see neighboring Claude cards.

For comparison, give models the same context and instructions; check factual accuracy, format compliance, and reasoning quality on your task.

News examples

Update history

12 December 2025

Long-awaited update in Neiron — meet Chat GPT-5.2

OpenAI has introduced GPT-5.2 — a competitor to Google Gemini 3 Pro and Claude Opus 4.5. This time the focus is on practical tasks: from science to business. The model has become noticeably smarter in mathematics, and its Pro version even solved a previously unsolved problem in statistical learning…

FAQ

What is Claude Opus 4.5?

What task is Claude Opus 4.5 suited to?

Handle coding, code analysis, and agentic development tasks. Choose it when you need repository work, code repair, or a multi-step engineering task.

What does Claude Opus 4.5 accept and return?

Reviewed input modalities: Text, Images. Output: Text. The record was checked on 2026-08-26.