Claude 4.5 Opus
Anthropic's November 2025 flagship model, combining maximum capability with practical performance for coding, agents, computer use, and enterprise workflows.
Claude 4.5 Opus at a glance
Context window
200K tokens
Input price
$5
per 1M tokens
Output price
$25
per 1M tokens
Why use Claude 4.5 Opus
Strengths, benchmarks, and where Claude 4.5 Opus fits in your team's workflow.
1. Maximum capability with more practical pricing
- Anthropic introduced Opus 4.5 as its most intelligent model, combining maximum capability with practical performance.
- It was positioned as the best model in the world for coding, agents, and computer use at launch, with pricing reduced to $5/M input and $25/M output.
2. Step-change gains for coding and advanced agent work
- Anthropic describes Opus 4.5 as state-of-the-art on real-world software engineering tests.
- It also improved everyday knowledge-work tasks like deep research, slides, and spreadsheets while staying strong on long-horizon agent workflows.
3. Better control over reasoning depth
- Opus 4.5 introduced the
effortparameter, letting developers trade off response thoroughness against token efficiency. - This made it easier to use one flagship model across both high-depth analysis and more cost-sensitive production workloads.
4. Stronger computer use and continuity
- Added enhanced computer use with a zoom action for inspecting detailed screen regions.
- Preserves prior thinking blocks across turns, helping the model maintain reasoning continuity in extended multi-step tasks.
Power your team with Claude 4.5 Opus
Appaca is the AI workspace for operators. Build internal tools and AI co-workers powered by Claude 4.5 Opus - connected to your real data and ready for your whole team. No code, no deployment.
Build internal AI tools
Describe what you need and the Appaca agent builds it - lead scorers, report generators, email drafters - with Claude 4.5 Opus as the engine. No code, no deployment.
Give Claude 4.5 Opus your real data
Connect the tools your team already uses - Slack, Notion, Google Sheets, Airtable, and more - so Claude 4.5 Opus works with real context, not generic answers.
Automate recurring tasks
Schedule Claude 4.5 Opus to run on autopilot - daily digests, weekly summaries, or real-time triggers - all managed inside your Appaca workspace.
Describe it, and it's built
Tell the Appaca agent what your team needs and it builds a working app powered by Claude 4.5 Opus - connected to the tools you already use.
Where teams use Claude 4.5 Opus
See how teams put Claude 4.5 Opus to work inside Appaca - internal tools and AI agents that work around you.
Sales
Score leads, draft follow-ups, and summarise deals with Claude 4.5 Opus doing the heavy lifting.
Explore Appaca for SalesMarketing
Draft, repurpose, and report on campaigns in your brand voice - powered by Claude 4.5 Opus.
Explore Appaca for MarketingOperations
Automate reporting, vendor tracking, and process docs with AI built around your workflow.
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Build internal AI tools with Claude 4.5 Opus
Describe the tool your team needs and get a working app powered by Claude 4.5 Opus - with a built-in database, team access, and integrations. No code, no deployment.