Reddit
reddit.com › r/claudeai › opus 4 vs sonnet 4
r/ClaudeAI on Reddit: Opus 4 vs Sonnet 4
May 26, 2025 -
I work in quantitative finance, so most of my programming revolves around building financial tools that detect and exploit market anomalies. The coding I do is highly theoretical and often based on insights from academic finance research.
I’m currently exploring different models to help me reason through and validate my approaches. Does anyone have experience using Opus 4 of Sonnet 4 for this kind of work? I’m trying to figure out what is the best fit for my use case.
Top answer 1 of 5
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I love reading these. All of you guys have AI with super important and hard stuff, and I'm over here using it to play like, Dungeons and Dragons.
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I created an MCP to connect with my stock broker and gave Claude access to historical data and other tools required to trade on my behalf. I didn't ask it to execute any specific strategies yet but I realized it's not good at trading just using tools. I lost few bucks using this so far.
Eden AI
edenai.co › post › claude-sonnet-4-vs-claude-opus-4
Claude Sonnet 4 vs Claude Opus 4
Claude Opus 4 and Claude Sonnet 4 are both strong performers, but with distinct strengths. Claude Opus 4 outperforms Sonnet 4 in several key areas: it achieves higher accuracy in terminal coding (50.0% vs. 41.3%), high school math competition ...
Videos
Anthropic
anthropic.com › news › claude-4
Introducing Claude 4
Claude Opus 4 is the world’s best coding model, with sustained performance on complex, long-running tasks and agent workflows. Claude Sonnet 4 is a significant upgrade to Claude Sonnet 3.7, delivering superior coding and reasoning while responding more precisely to your instructions.
Medium
medium.com › @leucopsis › claude-sonnet-4-and-opus-4-a-review-db68b004db90
Claude Sonnet 4 and Opus 4, a Review | by Barnacle Goose | Medium
May 29, 2025 - In contrast, Claude Sonnet 4 is a direct upgrade to the previous Claude 3.7 Sonnet model. It offers “superior coding and reasoning while responding more precisely to your instructions”, at a lower cost and faster speed than Opus 4. Both ...
DataCamp
datacamp.com › blog › claude-4
Claude 4: Tests, Features, Access, Benchmarks & More | DataCamp
May 23, 2025 - Compared to Claude Sonnet 3.7, this version is faster, better at following instructions, and more reliable in code-heavy workflows. It supports up to 64K output tokens, which helps with slightly longer outputs like structured plans, multi-part ...
Lisa Peyton
lisapeyton.com › home › claude 4.1 opus vs. claude 4.5 sonnet: a real-world showdown for content marketers
Claude 4.1 Opus vs. Claude 4.5 Sonnet: A Real-World Showdown for Content Marketers | Lisa Peyton
October 2, 2025 - Claude 4.1 Opus came out swinging with energy. The opening line—”Let’s talk real talk: You’re not getting replaced by AI”—hits hard and immediately establishes a conversational vibe. It leaned heavily into metaphors (the orchestra conductor theme) and maintained a consistently upbeat, almost motivational speaker energy throughout. Claude 4.5 Sonnet opened with: “Here’s the truth nobody’s saying out loud: Your job isn’t one thing—it’s fifty things wrapped in a fancy title.” Different approach, but equally engaging.
Creole Studios
creolestudios.com › home › claude opus 4 or sonnet 4? how to choose the right ai for your workflow
Claude Opus 4 vs Sonnet 4: Pick the Right AI Model
September 23, 2025 - Claude Opus 4 is Anthropic’s flagship model—best for deep reasoning, advanced coding, and long-context tasks. Claude Sonnet 4 is a balanced model—ideal for content generation, support bots, and cost-effective AI use.
Skywork
skywork.ai › home › claude sonnet 4.5 vs claude opus: which one should you choose?
Claude Sonnet 4.5 vs Claude Opus: which one should you choose? - Skywork ai
October 3, 2025 - A: Yes, the data shows clear gains on software-focused evaluations for Claude Sonnet 4.5. It retains context for much longer, which is critical for complex debugging and large code refactoring projects. Q2: How much more expensive is Claude Opus compared to Sonnet?
CodeRabbit
coderabbit.ai › blog › claude-sonnet-45-better-performance-but-a-paradox
Claude Sonnet 4.5: Better performance but a paradox
We benchmarked Claude Sonnet 4.5 as it narrows the gap with Opus 4.1 in code review, catching more critical bugs with 41% important hits at lower cost.
Keywordsai
keywordsai.co › blog › claude-sonnet-4-vs-claude-opus-4-a-comprehensive-comparison
Claude Sonnet 4 vs Claude Opus 4: A comprehensive ...
It shares the same massive context window, but under the hood is more advanced (Anthropic calls it their “most intelligent model”). Opus 4 is significantly more expensive to use, reflecting its superior capability in deep reasoning and coding. Both models are accessible via API and major ...
Adaline
labs.adaline.ai › p › claude-4
Claude 4 Models for Product Teams: Sonnet vs Opus Comparison Guide
August 22, 2025 - This leads to either overspending or underwhelming results. Choose Sonnet 4 for daily development at $3/$15 per million tokens, and Opus 4.1 for complex reasoning at $15/$75 when accuracy justifies 5x cost.
ClaudeLog
claudelog.com › home › faqs › sonnet vs opus
Claude Sonnet 4.5 vs Opus for Claude Code - Performance Comparison | ClaudeLog
Sonnet 4.5 is excellent for fast daily coding work, while Opus 4.5 is state-of-the-art for software engineering (leading SWE-bench Verified), complex reasoning, and agentic workflows.
Databricks
databricks.com › blog › introducing-new-claude-opus-4-and-sonnet-4-models-databricks
Introducing new Claude Opus 4 and Sonnet 4 models on Databricks | Databricks Blog
Opus 4 offers industry-leading reasoning and agentic capabilities, while Sonnet 4 provides an optimal balance of cost and performance for enterprise-scale deployments. With full integration into the Databricks Data Intelligence Platform, enterprise ...
Anthropic
anthropic.com › news › claude-opus-4-5
Introducing Claude Opus 4.5
Claude Opus 4.5 excels at long-horizon, autonomous tasks, especially those that require sustained reasoning and multi-step execution. In our evaluations it handled complex workflows with fewer dead-ends. On Terminal Bench it delivered a 15% improvement over Sonnet 4.5, a meaningful gain that ...
Reddit
reddit.com › r/claudecode › is claude code sonnet 4.5 really better than opus 4.1? not seeing it.
r/ClaudeCode on Reddit: Is Claude Code Sonnet 4.5 Really Better Than Opus 4.1? Not Seeing It.
October 3, 2025 -
How are people genuinely praising Claude Code Sonnet 4.5? I have no idea what’s happening…but from my experience it’s pretty disappointing. Sorry if that stings, but I’m honestly curious about what others see in it.
I’m speaking as someone who uses Claude Code daily easily 7+ hours per day and who has been deeply involved with it since the beginning. I consider myself a power user and truly understand the capabilities it should have. Maybe I’m missing something crucial here…but BESIDES that point I’m really dissatisfied and frustrated with Anthropic right now.
On top of that, the marketing hype around Sonnet 4.5 feels like the same garbage AI slot promotion we saw everywhere with ChatGPT lol. It’s being marketed as the “best model in the world,” likely to people who barely even scratch its surface.
I’ve also just hit a usage limit on Opus 4.1. I’m on the max 200 plan and now there’s some kind of cap in place…for what, a week? Why? If Sonnet is sooooo good why are they placing weekly limits on opus 4.1? So stupid. Can someone explain what’s going on here?
Top answer 1 of 20
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Sonnet 4.5 solved a complex deadlock bug in two shots that Opus 4.1, Gemini 2.5 pro, and codex 5 cli thinking have spent weeks on. I’ve been impressed and I’ve gone from only Opus 4.1 to only Sonnet 4.5 with no noticeable degradation.
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The situation is less about Sonnet 4.5 being a disappointment and more about a strategic shift in how the AI models are being offered. For power users, the key takeaway is that the workflow must now adapt. Opus 4.1 remains the superior tool for deep, complex tasks, but it is now positioned as a premium, limited resource. Sonnet 4.5 is the new, faster default for everything else. The frustration is a natural consequence of this transition, especially when the communication and marketing don't fully articulate this nuanced strategy to the most dedicated segment of the user base.
Data Studios
datastudios.org › post › claude-opus-4-5-vs-claude-sonnet-4-5-model-differences-pricing-structure-context-windows-and-mor
Claude Opus 4.5 vs Claude Sonnet 4.5: Model Differences, Pricing Structure, Context Windows, and more
November 25, 2025 - Sonnet 4.5 performs extremely well in practical coding, summarization, spreadsheet manipulation, short-to-medium reasoning and content generation — often delivering 90–95% of Opus’s performance at significantly reduced cost.
Medium
medium.com › @ferreradaniel › claude-4-opus-vs-sonnet-the-future-of-ai-coding-tools-in-2025-which-model-wins-c1baa9f445f7
Claude 4 Opus vs Sonnet: The Future of AI Coding Tools in 2025 — Which Model Wins? | by Daniel Ferrera | Medium
May 23, 2025 - Opus is for power users and big projects, while Sonnet balances speed, cost, and performance for everyday coding and AI tasks. For most people, Sonnet will get things done for you.
Socialgains
socialgains.co.uk › claude-4-opus-vs-sonnet-complete-2025-comparison-guide
Claude 4 Opus vs Sonnet: Complete 2025 Comparison Guide
May 25, 2025 - Opus 4 is the premium model for complex, long running tasks that can work autonomously for hours. Sonnet 4 balances performance with efficiency for everyday use. For most non developer projects, Sonnet 4 is sufficient and more cost effective.
Overchat
overchat.ai › home › blog › chatgpt killer? i reviewed claude sonnet 4 & opus 4 ai models
ChatGPT Killer? I reviewed Claude Sonnet 4 & Opus 4 AI Models | AI Hub
September 10, 2025 - I was eager to test these models' ... the TL;DR? Sonnet 4 is a workhorse upgrade that costs the same as before, while Opus 4 is their bet on "what if we made an AI that could finish an entire project."...
Claude Docs
platform.claude.com › docs › en › about-claude › models › overview
Models overview - Claude Docs
If you're unsure which model to use, we recommend starting with Claude Sonnet 4.5.