Claude Opus 5 wins on coding (100 vs 98). Claude Sonnet 5 wins on price ($2 vs $5/1M input). For most workflows, Claude Opus 5 is the stronger default — best premium model for agentic coding — near-fable 5 quality at half the price.
The safest Claude Opus 5 vs Claude Sonnet 5 default, the cheaper option worth trying first, and the specialist pick — before you read the detail below.
Claude Opus 5 is the strongest answer here for Claude Opus 5 vs Claude Sonnet 5 — pick it when quality of output matters more than the $5.00/1M/1M input you pay for it.
Claude Sonnet 5 handles the same job for about 60% less per token. Start here and only move up if the output is not good enough.
Claude Sonnet 5 is the fastest of these for Claude Opus 5 vs Claude Sonnet 5 — worth it when latency is what the reader notices, not the last few points of reasoning depth.
Claude Opus 5 leads on coding with a score of 100 vs 98 for Claude Sonnet 5.
Claude Sonnet 5 is cheaper at $2/1M input tokens vs $5/1M for Claude Opus 5.
Claude Opus 5 is the stronger default for coding tasks.
Choose Claude Opus 5 for complex agentic coding and enterprise agent workflows. Its coding and research scores are what carry the recommendation here.
Choose Claude Sonnet 5 when your work is mostly high-volume agentic workloads and production apps at mid-tier pricing — that is the workload it was tuned for.
Claude Sonnet 5 is the more cost-efficient option at $2/1M input — Claude Opus 5 costs 3x more per input token, so the gap is worth taking seriously wherever token volume rather than peak quality drives the bill.
Switch the scoring lens to see whether the Claude Opus 5 vs Claude Sonnet 5 answer changes when cost, speed, or long-document depth leads the decision.
Anthropic / Premium / Sep 3, 2026
Best premium model for agentic coding — near-Fable 5 quality at half the price.
Ranks models by the broadest mix of coding, writing, research, and long-context usefulness.
You need fast interactive latency (Sonnet 5 is quicker and one-fifth the price) or absolute frontier ceiling (Fable 5).
Where the Claude Opus 5 vs Claude Sonnet 5 recommendation shifts once you weigh price or latency differently.
Best premium model for agentic coding — near-Fable 5 quality at half the price.
Best value Claude — agentic Sonnet speed with near-Opus capability.
List prices and published scores — the numbers this page's pick is built from.
| Model | Input | Output | Est. month | Context | Speed | Coding | Writing | Research |
|---|---|---|---|---|---|---|---|---|
| Claude Opus 5Anthropic | $5.00/1M | $25.00/1M | $100 | 1M tokens | Deliberate | 100 | 96 | 98 |
| Claude Sonnet 5Anthropic | $2.00/1M | $10.00/1M | $40 | 1M tokens | Fast | 98 | 98 | 95 |
Scores out of 100 — how we evaluate models. “Est. month” is 10M in / 2M out at list price: a ceiling, no discounts.
Why each one is on the shortlist for Claude Opus 5 vs Claude Sonnet 5, what it is genuinely good at, and where we would steer you away from it.
The default answer for Claude Opus 5 vs Claude Sonnet 5 — 100/100 on the coding axis, and the model we would start with unless the price below rules it out.
Anthropic's flagship-tier Opus that comes close to Claude Fable 5's frontier intelligence at half the price — the new default for complex agentic coding and enterprise agents.
You need fast interactive latency (Sonnet 5 is quicker and one-fifth the price) or absolute frontier ceiling (Fable 5).
The new premium coding default. Opus 5 takes the SWE-bench Verified lead from Opus 4.8 at the same $5/$25 price, and gets within half a point of Fable 5 on agentic coding at half the cost. Choose Fable 5 only when absolute frontier intelligence matters more than budget.
Full pricing, benchmark table and release notes on the Claude Opus 5 page.
Where most budgets should land for Claude Opus 5 vs Claude Sonnet 5 — about 60% less per token than Claude Opus 5, and still 98/100 on the coding axis.
Anthropic's most agentic Sonnet yet — a fast 1M-context workhorse that narrows the gap to Opus-class quality at $3/$15, and the new default model on claude.ai.
You need the absolute top coding ceiling — Opus 5 leads SWE-bench Verified by over 20 points.
The best price-to-capability pick in the Claude lineup. Sonnet 5 replaces Sonnet 4.6 as the production default: markedly better agentic coding and computer use at the same standard price, with a $2/$10 promo through August 2026.
Full pricing, benchmark table and release notes on the Claude Sonnet 5 page.
UseRightAI recommendations are based on practical decision factors people actually feel in day-to-day use.
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Claude Opus 5 wins on more of the categories we score — coding, research, reasoning — so it is the better default of the two. Claude Sonnet 5 is the better pick when your work is mostly high-volume agentic workloads and production apps at mid-tier pricing. Neither is universally "better": Claude Opus 5 is aimed at complex agentic coding and enterprise agent workflows, Claude Sonnet 5 at high-volume agentic workloads and production apps at mid-tier pricing.
Claude Sonnet 5 is cheaper at $2/1M input and $10/1M output. Claude Opus 5 costs $5/1M input and $25/1M output.
Both Claude Opus 5 and Claude Sonnet 5 have the same 1M context window.
Claude Opus 5 is better for coding with a score of 100 vs Claude Sonnet 5's 98 (out of 100). GPT-6 Astra is the overall coding leader in this directory at 100/100.
Claude Sonnet 5 is faster with a fast speed rating (score: 4) vs Claude Opus 5's deliberate rating (score: 2). Speed matters most for interactive and high-throughput work; for batch jobs the Claude Opus 5 latency penalty is usually invisible.
Still short of Claude Fable 5's absolute frontier ceiling on the hardest long-running agent tasks. Fast mode (research preview) doubles pricing to $10/$50, erasing the cost advantage over Fable 5. Avoid it if you need fast interactive latency (Sonnet 5 is quicker and one-fifth the price) or absolute frontier ceiling (Fable 5). That is the main case for looking at Claude Sonnet 5 instead.
Clearly behind Opus 5 and Fable 5 on the hardest reasoning and long-horizon agent tasks. Updated tokenizer produces ~1.0–1.35x more tokens for the same text, so effective cost runs above sticker price. Avoid it if you need the absolute top coding ceiling — Opus 5 leads SWE-bench Verified by over 20 points. Against Claude Opus 5 specifically, the gap shows up most on coding (100 vs 98).
Take a moderate workload of 10M input and 2M output tokens a month. Claude Opus 5 runs $100.00 (at $5/1M in and $25/1M out); Claude Sonnet 5 runs $40.00 (at $2/1M in and $10/1M out). That is a $60.00/month difference — Claude Sonnet 5 is the cheaper of the two at this volume, and the gap scales linearly as you send more. Output tokens dominate the bill on both, so prompt length matters far less than response length.
Yes, and for most teams that beats picking one. A common split is Claude Opus 5 for complex agentic coding and enterprise agent workflows, with Claude Sonnet 5 handling high-volume agentic workloads and production apps at mid-tier pricing. Routing high-volume, low-stakes calls to Claude Sonnet 5 at $2/1M and reserving Claude Opus 5 for the hard cases is usually the cheapest arrangement that does not cost you quality.