Anthropic
anthropic.com › news › claude-sonnet-4-5
Introducing Claude Sonnet 4.5
September 29, 2025 - We recommend upgrading to Claude Sonnet 4.5 for all uses. Whether you’re using Claude through our apps, our API, or Claude Code, Sonnet 4.5 is a drop-in replacement that provides much improved performance for the same price. Claude Code updates are available to all users.
Reddit
reddit.com › r/cline › claude sonnet 4.5 is now available in cline
r/CLine on Reddit: Claude Sonnet 4.5 is now available in Cline
September 29, 2025 -
Hey everyone! Claude Sonnet 4.5 just went live in Cline.
Same pricing as Sonnet 4 ($3/$15), 200k or 1M context window, but the behavior is noticeably different. The model is way more terse -- it skips the narration and just executes. Where Sonnet 4 would explain every step, 4.5 chains operations together and only speaks up when it needs clarification.
The big improvement is how it handles long tasks. It naturally maintains state files (progress.txt, implementation notes, test manifests) and picks up exactly where it left off across sessions.
This pairs well with Cline's Auto Compact and Focus Chain features. When context gets compressed, the model's state files provide additional continuity.
Model string: claude-sonnet-4-5-20250929
Full details: https://cline.bot/blog/claude-sonnet-4-5
Curious what the community thinks of the latest iteration of Claude Sonnet!
-Nick
Top answer 1 of 5
5
I saw support was added to Bedrock and then the commit was reverted, then a fix was made that excluded Bedrock. Is there a blocker to support 4.5 in Bedrock?
2 of 5
3
Very good post. I clearly noticed how it wastes less tokens. Same token price, less cost overall. Very good model. Hope they don't degrade it and rug pull.
Claude Sonnet 4.5 is now available in Cline
I saw support was added to Bedrock and then the commit was reverted, then a fix was made that excluded Bedrock. Is there a blocker to support 4.5 in Bedrock? More on reddit.com
25
70
September 29, 2025Sonnet 4.5 is good but the price.....
thats why I only use GPT 5. actually, GPT 5 one-shots a lot of things Sonnet needs like 40 tries. More on reddit.com
104
165
September 2, 2025Claude Code showing two identical "Sonnet 4" options with different pricing - what's the
difference?
It would look like pre-paid vs extended usage quotas. I hope for you all I'm wrong and It's just an error. More on reddit.com
10
9
July 19, 2025Is switching from Claude Code to GitHub Copilot (Sonnet 4.5) worth it?
I got to use both concurrently in my companies poc trials. Copilot mid summer was hot garbage with an 8k context window. It’s gotten a lot better context window for sonnet 4.5 is up to 120k tokens and they have made a lot of good improvements. I think it depends on your chats, vibe coding style and repo size. If you are routinely hitting 200k before summarizing and going with one long chat they extra for Claude might be worth for you. However value for dollar is better in copilot because you don’t pay for tokens you pay for enter presses. I think for most people copilot is a good substitute however if you are price insensitive. I still think Claude code is best in class. More on reddit.com
76
79
November 17, 2025How much does Claude Sonnet 4.5 cost?
For prompts ≤200K tokens: $3/M input, $15/M output. For prompts >200K tokens: $6/M input, $22.5/M output. Prompt caching offers additional savings (write: $3.75-7.50/M, read: $0.30-0.60/M). Same pricing as Sonnet 4.
leanware.co
leanware.co › insights › claude-sonnet-4-5-overview
Claude Sonnet 4.5: Features, Benchmarks & Pricing Guide (2025)
What is Claude Sonnet 4.5 used for?
Claude Sonnet 4.5 handles software development, agent workflows, and computer-use tasks. It's used for pull request generation, bug fixing, multi-step feature building, browser automation, security audits, financial analysis, legal document review, and research with long context. It integrates with tools like Cursor and GitHub Copilot.
leanware.co
leanware.co › insights › claude-sonnet-4-5-overview
Claude Sonnet 4.5: Features, Benchmarks & Pricing Guide (2025)
Where can I access Claude Sonnet 4.5?
Claude API (claude-sonnet-4-5), Claude.ai web interface, iOS/Android apps, Amazon Bedrock, Google Cloud Vertex AI, VS Code extension, and integrated in Cursor, Windsurf, and GitHub Copilot. Free tier available on Claude.ai.
leanware.co
leanware.co › insights › claude-sonnet-4-5-overview
Claude Sonnet 4.5: Features, Benchmarks & Pricing Guide (2025)
Videos
33:17
Sonnet 4.5 is the best coding model in the world - YouTube
10:57
The $3 A Month AI Model That Outperforms Claude Sonnet 4 - YouTube
Introducing Claude Opus 4.5: AI Model for Coding, Agents ...
16:16
How I Got GPT-5 & Claude 4.5 Access for $0 — 40M Tokens + $200 ...
16:55
Best AI for Developers Revealed Oct 2025! - YouTube
13:00
Claude Haiku 4.5 Is HALF the Cost of Sonnet 4 – But Can It Still ...
Cursor IDE
cursor-ide.com › blog › claude-sonnet-4-5-pricing
Claude Sonnet 4.5 Pricing Guide 2025: Complete Cost Analysis, Comparison & Calculator - Cursor IDE 博客
October 4, 2025 - Claude Sonnet 4.5 pricing starts at $3 per million input tokens and $15 per million output tokens, representing a cost-neutral upgrade from Claude Sonnet 4 while delivering significantly enhanced capabilities.
Medium
medium.com › data-science-in-your-pocket › claude-4-5-sonnet-bye-bye-software-devs-7c35c244e357
Claude 4.5 Sonnet : Bye bye Software Devs | by Mehul Gupta | Data Science in Your Pocket | Medium
September 30, 2025 - Claude Sonnet 4.5 is available everywhere now. Pricing stays the same as Sonnet 4, $3/$15 per million tokens through the Claude API.
Leanware
leanware.co › insights › claude-sonnet-4-5-overview
Claude Sonnet 4.5: Features, Benchmarks & Pricing Guide (2025)
We enjoy working with Leanware’s team.
TLDR: Claude Sonnet 4.5 scores 77.2% on SWE-bench Verified (82.0% with parallel compute), 50.0% on Terminal-Bench, and 61.4% on OSWorld. It reaches 100% on AIME with Python and 83.4% on GPQA Diamond. Pricing is $3 per million input tokens and $15 per million output tokens; you can use it on ... Leanware has a good working process and iterates on the product quickly, adapting to the client’s methodologies. The team is accommodating with the timeline and communicates effectively through thrice-weekly phone calls, Slack, and reports. Their flexibility has made them an excellent partner. Comprehen
Claude
docs.claude.com › en › docs › about-claude › pricing
Pricing - Claude Docs
October 16, 2025 - Cache read tokens are 0.1 times the base input tokens price · Claude models are available on AWS Bedrock, Google Vertex AI, and Microsoft Foundry. For official pricing, visit: ... Regional endpoint pricing for Claude 4.5 models and beyondStarting with Claude Sonnet 4.5 and Haiku 4.5, AWS Bedrock and Google Vertex AI offer two endpoint types:
Cline
cline.bot › blog › claude-sonnet-4-5
Anthropic's Claude Sonnet 4.5 is Live in Cline - Cline Blog
September 29, 2025 - The model is available now in Cline as claude-sonnet-4.5.
TechCrunch
techcrunch.com › home › anthropic launches claude sonnet 4.5, its best ai model for coding
Anthropic launches Claude Sonnet 4.5, its best AI model for coding | TechCrunch
September 29, 2025 - On Monday, Anthropic launched a new frontier model called Claude Sonnet 4.5, which it claims offers state-of-the-art performance on coding benchmarks.
Glbgpt
glbgpt.com › hub › how-much-does-claude-sonnet-4-5-cost-pricing-explained-clearly
How Much Does Claude Sonnet 4.5 Cost? Pricing Explained Clearly
5 days ago - Claude Sonnet 4.5 has no standalone subscription price. You can access it via Claude Pro for $20/month or through usage‑based API pricing.
Portkey
portkey.ai › blog › claude-sonnet-4-5-vs-gpt-5
Claude Sonnet 4.5 vs GPT-5: performance, efficiency, and pricing compared.
October 1, 2025 - A head-to-head comparison of Claude Sonnet 4.5 and GPT-5, covering coding, reasoning, math, tool use, cost, and ecosystem integrations , with insights on where each model is best suited for enterprise use.
Anthropic
anthropic.com › claude › sonnet
Claude Sonnet 4.5
September 29, 2025 - Pricing for Sonnet 4.5 starts at $3 per million input tokens and $15 per million output tokens, with up to 90% cost savings with prompt caching and 50% cost savings with batch processing. To learn more, check out our pricing page. To get started, simply use claude-sonnet-4-5 via the Claude API.
AWS
aws.amazon.com › blogs › aws › introducing-claude-sonnet-4-5-in-amazon-bedrock-anthropics-most-intelligent-model-best-for-coding-and-complex-agents
Introducing Claude Sonnet 4.5 in Amazon Bedrock: Anthropic’s most intelligent model, best for coding and complex agents | Amazon Web Services
September 29, 2025 - Amazon Web Services announces Claude Sonnet 4.5 in Amazon Bedrock, featuring advanced capabilities in coding, tool handling, and long-horizon tasks, with improvements in memory management, context processing, and industry-specific applications across finance, research, and cybersecurity sectors.
Simon Willison
simonwillison.net › 2025 › Sep › 29 › claude-sonnet-4-5
Claude Sonnet 4.5 is probably the “best coding model in the world” (at least for now)
September 29, 2025 - The pricing is the same as the previous Sonnet: $3/million input tokens and $15/million output tokens. This remains significantly cheaper than Claude Opus—$15/$75—but still quite a bit more than GPT-5 and GPT-5-Codex, both at $1.25/$10.
Skywork
skywork.ai › home › claude sonnet 4.5 vs gpt-5: which ai model is better for developers?
Claude Sonnet 4.5 vs GPT-5: which AI model is better for developers? - Skywork ai
October 3, 2025 - Unlock the ultimate developer's guide: Claude Sonnet 4.5 vs GPT-5. This analysis compares features, performance, and applications to help you choose the superior AI model for your projects. Understand key differences in this Claude Sonnet 4.5 vs GPT-5 deep dive to make informed decisions for ...
Venturebeat
venturebeat.com › ai › anthropics-new-claude-can-code-for-30-hours-think-of-it-as-your-ai-coworker
Anthropic’s new Claude can code for 30 hours. Think of it as your AI coworker | VentureBeat
September 29, 2025 - The pricing disparity signals a ... performance rather than price. Companies managing exponentially growing AI budgets now face comparable capability at a fraction of the cost. Yet Anthropic is maintaining its pricing strategy with Claude Sonnet 4.5....
Apidog
apidog.com › blog › claude-sonnet-4-5-pricing
How Much Does Claude Sonnet 4.5 Cost?
September 30, 2025 - Explore Claude Sonnet 4.5 pricing in detail, from API rates at $3 per million input tokens to consumer plans. This Anthropic model leads in coding and reasoning benchmarks, offering value for developers.
Claude
claude.com › pricing
Pricing | Claude
September 29, 2025 - Explore Claude pricing plans and API costs. Choose from Free, Pro, Max, Team, or Enterprise options to get started with Claude.
Claude Docs
platform.claude.com › docs › en › about-claude › pricing
Pricing - Claude Docs
When using Claude Sonnet 4 or Sonnet 4.5 with the 1M token context window enabled, requests that exceed 200K input tokens are automatically charged at premium long context rates:
LLM Stats
llm-stats.com › home › models › claude sonnet 4.5
Claude Sonnet 4.5: Pricing, Context Window, Benchmarks, and More
September 29, 2025 - A comprehensive look at Claude Sonnet 4.5 - pricing, context window, API details, benchmarks, safety improvements, and what it means for developers and enterprises. Could this be the best AI for coding?
Claude
claude.ai
Claude
Talk with Claude, an AI assistant from Anthropic