Claude Opus 4.5 (2025-11-01)
Claude Opus 4.5 is the previous generation of Anthropic's Opus class, still runnable in FluxoKit's browser studio at about 1 credit per short run. This page pairs its real transcripts with Opus 4.6's on identical briefs, which makes the is-the-older-Opus-enough question answerable in minutes on plans from $14 per month.
Updated July 2026
Examples
7 generationsGenerated live on FluxoKit on July 3, 2026. Prompts shown verbatim, results unretouched.
Real generations with Claude Opus 4.5 (2025-11-01)
Write a 55–70 word product description for 'Lúmen', a matte frosted-glass facial serum that visibly hydrates in 30 seconds. Benefit-led, warm premium skincare tone; end with one soft call-to-action line.
# Lúmen Facial Serum Discover instant radiance with Lúmen—a luxuriously lightweight serum that delivers visible hydration in just 30 seconds. This fast-absorbing formula deeply quenches thirsty skin, leaving your complexion dewy, plump, and effortlessly luminous. Crafted for those who believe skincare should feel like a ritual, not a routine, Lúmen transforms your morning and evening moments into something truly nourishing. *Embrace your glow—your skin deserves this.*
Write 5 scroll-stopping ad hooks for a personal-training program (30-minute sessions, 3× per week, no-excuses tone) aimed at busy professionals. One line each.
1. "You have 168 hours this week—we need 1.5 of them to change your life." 2. "Your calendar runs your body; it's time to take it back in 30 minutes flat." 3. "Too busy to work out? That's exactly why you need this." 4. "You'll spend longer in meetings today than we need all week—what's your excuse?" 5. "Executives who 'don't have time' are my specialty."
Write an Instagram caption announcing a limited streetwear drop (an oversized graphic hoodie). Hype tone, a line of urgency, and 2 relevant hashtags.
**🔥 IT'S HERE.** The hoodie you've been waiting for just landed. Oversized. Bold graphics. Zero compromises. This isn't a restock situation—when it's gone, it's GONE. ⚡ Don't be the one asking "will this come back?" in our DMs next week. 🛒 Link in bio. Move fast. #StreetWearDrop #LimitedEdition
Overview
Claude Opus 4.5 held the strongest-model title when it launched, and the honest 2026 question is whether the older Opus is still enough for your work. FluxoKit keeps it runnable at the same measured cost as its successor, so the answer comes from transcripts, not release notes.
Every transcript on this page is a real prompt to answer run, verbatim, on the same seven-brief set Opus 4.6 ran. Read them side by side and the upgrade decision makes itself.
What you can build with Claude Opus 4.5
Opus 4.5 still delivers Opus-class judgment: structured strategy, long-form drafts, and careful brief interpretation. On most creative work in the shared transcripts, its answers stand close to 4.6's, which is exactly why this page exists as the comparison's baseline panel.
Teams with prompt libraries tuned against 4.5 keep consistency by staying; new work generally starts on 4.6 since the cost is equivalent.
Claude Opus 4.5 vs 4.6: is the older Opus enough
The identical-brief transcripts across both pages are the answer in evidence form: where 4.6 pulls ahead is multi-step reasoning density; where 4.5 holds even is tone, structure, and everyday creative judgment. At about 1 credit per short run on either, the choice is about output, not price.
Claude Opus 4.5 vs Claude Opus 4.6, Claude Sonnet 4.5, and DeepSeek V3.2
The current Opus, same measured run cost. Its page carries the same seven briefs; the delta is visible per transcript.
Sonnet is the faster everyday tier. If 4.5's depth already exceeds your tasks, Sonnet may serve them at lower latency.
The budget flagship-challenger. Its transcripts show how much of Opus-class quality survives at the value tier.
Capabilities
Vision (image understanding)
Yes
Document input
Yes
Limits
Max reference images
8
Max documents
4
Output tokens (min–max)
1–32000
Parameters and inputs
Each field below shows what the model accepts and the limits to apply.
Message
System Prompt
systemPrompt
- Required
- No
- Default
- Not set
User Prompt
userPrompt
- Required
- Yes
- Default
- Not set
Image URLs
imageUrls
- Required
- No
- Default
- Not set
Frequently asked questions
›Is Claude Opus 4.5 still worth using?
If your prompts were tuned against it, yes: it remains Opus-class on creative judgment, at the same measured FluxoKit run cost as 4.6. For new work, start on 4.6. The identical-brief transcripts across both pages are the evidence.
›What is the difference between Claude Opus 4.5 and 4.6?
4.6 reasons more densely on multi-step tasks; 4.5 stays close on tone and structure. Both run at about 1 credit per short brief on FluxoKit, so the comparison is about output quality, which the shared transcripts show verbatim.
›How much does Claude Opus 4.5 cost on FluxoKit?
About 1 credit per short run, measured on this page's own transcripts, scaling with length. Plans start at $14 per month with a 30-day money-back guarantee.
›Do I need an Anthropic account to run Claude Opus 4.5?
No. FluxoKit runs the Claude family and more than 100 other models under one subscription with credit based pricing.
Start creating
Run Claude Opus 4.5 (2025-11-01) in your browser. No API key, no provider account.
The baseline panel of the Opus upgrade decision. One studio, more than 100 AI models.
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