Anthropic
anthropic.com › news › claude-opus-4-5
Introducing Claude Opus 4.5
November 24, 2025 - Our newest model, Claude Opus 4.5, is available today. It’s intelligent, efficient, and the best model in the world for coding, agents, and computer use. It’s also meaningfully better at everyday tasks like deep research and working with slides and spreadsheets.
Google Cloud Platform
console.cloud.google.com › vertex-ai › publishers › anthropic › model-garden › claude-opus-4-5
Claude Opus 4.5 – Vertex AI
1 month ago - Google Cloud Console has failed to load JavaScript sources from www.gstatic.com. Possible reasons are:www.gstatic.com or its IP addresses are blocked by your network administratorGoogle has temporarily blocked your account or network due to excessive automated requestsPlease contact your network ...
How Likely Opus 4.5 Is Coming This Week?
sure opus might be the best model . but given opus historically which costs a lot more than sonnet and claude's usage restrictions, it might still mean its useless if i get locked out with 5 hourly and weekly limits . i am sticking with gemini for now , i like their new Antigravity More on reddit.com
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October 19, 2025So far it seems like you really CAN use Opus 4.5 a ton which is wild! I have it running on 3 sessions right now reviewing code (I have the 100 dollar plan) and it has not budged from 2% usage.
This is a nice gesture before Thanksgiving. I'm one of the bigger critics of Anthropic and what it did to Claude Code users. That said, I'm cautiously excited with this change. $100/month is a big bill for many of us. It's not free lunches. We don't expect free lunches. Let's make that clear, and hope Anthropic does right to its Claude Code users. More on reddit.com
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1 month agoAnthropic has released Claude Opus 4.5. SOTA coding model, now at $5/$25 per million tokens.
The biggest news for me is: For Max and Team Premium users, we’ve increased overall usage limits, meaning you’ll have roughly the same number of Opus tokens as you previously had with Sonnet. If Opus 4.5 doesn't degrade after a while, this can be a game changer for me, as I won't need to be as hands on. More on reddit.com
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1 month agoClaude Opus 4.5 (Preview) available in Copilot
Appreciate the feedback from r/GithubCopilot that we needed to make Opus available in agent mode. Glad we were able to make it happen for this release! More on reddit.com
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1 month agoVideos
00:50
Introducing Claude Opus 4.5 - YouTube
Build Any App in Minutes with AI: Claude Code and Vibe ...
17:07
Anthropic releases method to 10× Claude Code / Opus 4.5 - YouTube
05:26
Anthropic's Claude Opus 4.5 in 5 Minutes - YouTube
24:45
The only Claude Code guide you'll ever need (Opus 4.5) - YouTube
Claude released Opus 4.5 on Monday. Optimised for ...
Reddit
reddit.com › r/bard › claude opus 4.5 release imminent 20 nov 2025
r/Bard on Reddit: Claude Opus 4.5 release imminent 20 nov 2025
November 20, 2025 - Anthropic: A video of all versions of Claude, from the original to 4.5, trying to recreate claude.ai ... "We are reserving Claude 4 Sonnet...for things that are quite significant leaps, which are coming soon" - Dario Amodei - Anthropic CEO ... Claude Opus 4.1 Released!
Factsheet
Developer Anthropic
Initial release March 2023; 2 years ago (2023-03)
Stable release Claude Opus 4.5 /
November 24, 2025; 31 days ago (2025-11-24)
Claude Sonnet 4.5 /
September 29, 2025; 2 months ago (2025-09-29)
Claude Haiku 4.5 /
October 15, 2025; 2 months ago (2025-10-15)
November 24, 2025; 31 days ago (2025-11-24)
Claude Sonnet 4.5 /
September 29, 2025; 2 months ago (2025-09-29)
Claude Haiku 4.5 /
October 15, 2025; 2 months ago (2025-10-15)
Developer Anthropic
Initial release March 2023; 2 years ago (2023-03)
Stable release Claude Opus 4.5 /
November 24, 2025; 31 days ago (2025-11-24)
Claude Sonnet 4.5 /
September 29, 2025; 2 months ago (2025-09-29)
Claude Haiku 4.5 /
October 15, 2025; 2 months ago (2025-10-15)
November 24, 2025; 31 days ago (2025-11-24)
Claude Sonnet 4.5 /
September 29, 2025; 2 months ago (2025-09-29)
Claude Haiku 4.5 /
October 15, 2025; 2 months ago (2025-10-15)
Wikipedia
en.wikipedia.org › wiki › Claude_(language_model)
Claude (language model) - Wikipedia
4 days ago - The first generation, Claude 1, was released in March 2023, and the latest, Claude Opus 4.5, in November 2025. The data for these models comes from sources such as Internet text, data from paid contractors, and Claude users.
Medium
medium.com › @leucopsis › claude-opus-4-5-review-1d9b46bb053a
Claude Opus 4.5 - First Look. When Anthropic released Claude Opus 4.5… | by Barnacle Goose | Nov, 2025 | Medium
3 weeks ago - When Anthropic released Claude Opus 4.5 on 24 November 2025, it did so into an unusually crowded sky. Google’s Gemini 3 Pro had arrived a…
Simon Willison
simonwillison.net › 2025 › Nov › 24 › claude-opus
Claude Opus 4.5, and why evaluating new LLMs is increasingly difficult
1 month ago - Anthropic released Claude Opus 4.5 this morning, which they call “best model in the world for coding, agents, and computer use”. This is their attempt to retake the crown for best coding model after significant challenges from OpenAI’s ...
Claude
support.claude.com › en › articles › 12138966-release-notes
Release Notes | Claude Help Center
September 29, 2025 - We released our most powerful frontier model to date. Read our blog post for more information: Introducing Claude Opus 4.5.
TechCrunch
techcrunch.com › home › anthropic releases opus 4.5 with new chrome and excel integrations
Anthropic releases Opus 4.5 with new Chrome and Excel integrations | TechCrunch
1 month ago - Anthropic has launched Opus 4.5, the latest version of its flagship model, with new integrations into Chrome and Excel.
Anthropic
anthropic.com › transparency
Anthropic's Transparency Hub
3 weeks ago - Based on these assessments, we have decided to release Claude Sonnet 4.5 under the ASL-3 Standard. Similarly to Claude Opus 4 and Claude Opus 4.1, we have not determined whether Claude Sonnet 4.5 has definitively passed the capabilities threshold that requires ASL-3 protections.
GitHub
github.blog › home › changelogs › claude opus 4.5 is in public preview for github copilot
Claude Opus 4.5 is in public preview for GitHub Copilot - GitHub Changelog
1 month ago - Claude Opus 4.5 will be available to Copilot Pro, Pro+, Business, and Enterprise users, priced at a promotional 1x premium request multiplier through December 5, 2025.
PromptLayer
blog.promptlayer.com › opus-4-5-what-we-expect
Opus 4.5: What We Expect
October 23, 2025 - When will we see Opus 4.5? Late 2025 or Q1 2026 seems most likely, based on Anthropic's recent release cadence. Some prediction markets put non-trivial odds on a December 2025 announcement, reflecting anticipation in the developer community.
Vals AI
vals.ai › models
Claude Opus 4.5 (Thinking)
November 24, 2025 - Release date · Models · 12/22/2025 ... 3 · 12/1/2025 · DeepSeek V3.2 (Nonthinking) 12/1/2025 · DeepSeek V3.2 (Thinking) 11/24/2025 · Claude Opus 4.5 (Nonthinking) 11/24/2025 ·...
Gadgets 360
gadgets360.com › home › ai › ai news › anthropic tipped to release claude 4.5 opus soon, said to be focused on resisting jailbreaks
Anthropic Tipped to Release Claude 4.5 Opus Soon, Said to Be Focused on Resisting Jailbreaks | Technology News
October 29, 2025 - Anthropic might be close to releasing the frontier version of its Claude 4.5 family, the Claude 4.5 Opus. As per a leak, the San Francisco-based artificial intelligence (AI) firm has shared a new large language model (LLM) with red-teamers. The model is said to be codenamed Neptune V6, and there is a focus on resisting jailbreaking attempts.
CodeGPT
codegpt.co › blog › anthropic-claude-models-complete-guide
Anthropic Claude Models Complete Guide: Sonnet 4.5, Haiku 4.5 & Opus 4.1 | CodeGPT
October 25, 2025 - Anthropic's 2025 releases—Opus 4.1 (August), Sonnet 4.5 (September), and Haiku 4.5 (October)—cemented its strategy as the leader in agentic developer experience.
Claude
docs.claude.com › en › docs › about-claude › models › whats-new-claude-4-5
What's new in Claude 4.5 - Claude Docs
October 16, 2025 - Claude Sonnet 4 → Sonnet 4.5: Quick upgrade with minimal changes · Claude Opus 4.1 → Sonnet 4.5: Seamless upgrade with no breaking changes
CNBC
cnbc.com › 2025 › 09 › 29 › anthropic-claude-ai-sonnet-4-5.html
Anthropic launches Claude Sonnet 4.5, its latest AI model that's 'more of a colleague'
September 29, 2025 - Claude Sonnet 4.5 comes after Anthropic launched Claude Opus 4.1 in August and Claude Sonnet 4 in May.
Anthropic
anthropic.com › news › claude-sonnet-4-5
Introducing Claude Sonnet 4.5
September 29, 2025 - Claude Sonnet 4.5 makes this possible. We're releasing it along with a set of major upgrades to our products. In Claude Code, we've added checkpoints—one of our most requested features—that save your progress and allow you to roll back instantly to a previous state.
Reddit
reddit.com › r/claudeai › how likely opus 4.5 is coming this week?
r/ClaudeAI on Reddit: How Likely Opus 4.5 Is Coming This Week?
October 19, 2025 -
I'm asking because, while I like Gemini and its new model, 3.0 Pro, it feels like a jack-of-all-trades model, and even though, it's amazing, it's not what I'm looking for. My AI usage is 90% focused on coding, agentic tool usage, and front-end development. I don't care about producing videos, images, or other media with the model.
If Opus 4.5 is releasing this week, I'm switching since my Ultra subscription is about to end anyway.
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sure opus might be the best model . but given opus historically which costs a lot more than sonnet and claude's usage restrictions, it might still mean its useless if i get locked out with 5 hourly and weekly limits . i am sticking with gemini for now , i like their new Antigravity
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I would suspect they are not going to release it until they know it’s better than Gemini 3 at —something— so that they can market themselves on top of the hill for a while. If it comes out quickly, then it’s legit better than Gemini 3. If it takes a while, then it probably isn’t, and they had to tweak it until they could squeeze out a marketing win.
Claude Docs
platform.claude.com › docs › en › about-claude › models › overview
Models overview - Claude Docs
Training data cutoff is the broader date range of training data used. For example, Claude Sonnet 4.5 was trained on publicly available information through July 2025, but its knowledge is most extensive and reliable through January 2025.
Microsoft Azure
azure.microsoft.com › blog home › ai + machine learning › introducing claude opus 4.5 in microsoft foundry
Introducing Claude Opus 4.5 in Microsoft Foundry | Microsoft Azure Blog
1 month ago - Announcing Anthropic's newest model, Claude Opus 4.5, in Microsoft Foundry. Opus 4.5 is now available in public preview in Microsoft Foundry, GitHub Copilot paid plans, and Microsoft Copilot Studio.