Claude Sonnet 4.6 wins on coding (97 vs 80) and writing quality and context window (1M vs 256K). For most workflows, Claude Sonnet 4.6 is the stronger default — earlier sonnet — replaced by sonnet 5 and then sonnet 5.5.
The safest Grok 4 vs Claude Sonnet 4.6 default, the cheaper option worth trying first, and the specialist pick — before you read the detail below.
Claude Sonnet 4.6 is the strongest answer here for Grok 4 vs Claude Sonnet 4.6 — pick it when quality of output matters more than the $3.00/1M/1M input you pay for it.
Claude Sonnet 5.5 handles the same job for about 33% less per token. Start here and only move up if the output is not good enough.
Grok 4 is the fastest of these for Grok 4 vs Claude Sonnet 4.6 — worth it when latency is what the reader notices, not the last few points of reasoning depth.
Claude Sonnet 4.6 leads on coding with a score of 97 vs 80 for Grok 4.
Claude Sonnet 4.6 has the larger context window: 1M vs 256K for Grok 4.
Both models are similarly priced — the decision comes down to capability, not cost.
Go with Claude Sonnet 4.6 if you want one model to handle coding and writing — it targets daily coding, writing, and long-document work at a strong price-to-quality ratio.
Switch to Grok 4 when your work is mostly historical reference — use Grok 4.7 for new work; on that narrower brief it is the better tool.
Grok 4 is the more cost-efficient option at $3/1M input — Claude Sonnet 4.6 costs 1x 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 Grok 4 vs Claude Sonnet 4.6 answer changes when cost, speed, or long-document depth leads the decision.
Anthropic / Premium / Mar 24, 2026
Earlier Sonnet — replaced by Sonnet 5 and then Sonnet 5.5.
Ranks models by the broadest mix of coding, writing, research, and long-context usefulness.
You specifically need desktop-control capabilities (GPT-5.5/GPT-5.4) or the absolute highest coding ceiling (Opus 4.7).
Where the Grok 4 vs Claude Sonnet 4.6 recommendation shifts once you weigh price or latency differently.
Retired May 15, 2026 — replaced by Grok 4.6 and Grok 4.7.
Earlier Sonnet — replaced by Sonnet 5 and then Sonnet 5.5.
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 Sonnet 4.6Anthropic | $3.00/1M | $15.00/1M | $60 | 1M tokens | Balanced | 97 | 94 | 93 |
| Grok 4xAI | $3.00/1M | $15.00/1M | $60 | 256k tokens | Fast | 80 | 70 | 78 |
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 Grok 4 vs Claude Sonnet 4.6, what it is genuinely good at, and where we would steer you away from it.
The default answer for Grok 4 vs Claude Sonnet 4.6 — 97/100 on the coding axis, and the model we would start with unless the price below rules it out.
The default model powering Cursor and Windsurf. 79.6% SWE-bench, 1M context window, and best-in-tier writing quality — all at $3/1M input.
You specifically need desktop-control capabilities (GPT-5.5/GPT-5.4) or the absolute highest coding ceiling (Opus 4.7).
The best all-around model for most developers and writers. Strong SWE-bench, excellent writing, 1M context — all at $3/1M input. Hard to beat as a daily driver.
Full pricing, benchmark table and release notes on the Claude Sonnet 4.6 page.
Here for latency: it answers fastest of anything listed for Grok 4 vs Claude Sonnet 4.6, at 80/100 on coding.
xAI's July 2025 flagship, priced at $3/$15 per million tokens with a 256K context window. Retired from xAI's API on May 15, 2026; current Grok models are Grok 4.6 and Grok 4.7.
You need the highest writing quality or the most reliable production-grade output — Claude wins both.
Retired: xAI shut down the grok-4-0709 API on May 15, 2026. It was a strong coding model at launch, at $3/$15 with a 256K window; earlier versions of this page listed $2/$6 and 2M tokens in error. Use Grok 4.7 instead.
Full pricing, benchmark table and release notes on the Grok 4 page.
UseRightAI recommendations are based on practical decision factors people actually feel in day-to-day use.
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Claude Sonnet 4.6 wins on more of the categories we score — coding, writing, research — so it is the better default of the two. Grok 4 is the better pick when your work is mostly historical reference — use Grok 4.7 for new work. Neither is universally "better": Claude Sonnet 4.6 is aimed at daily coding and writing, Grok 4 at historical reference — use Grok 4.7 for new work.
Both models are similarly priced at $3/1M input tokens. The decision should come down to capability, not cost.
Claude Sonnet 4.6 has the larger context window at 1M tokens vs Grok 4's 256K. For large document analysis, Claude Sonnet 4.6 is the stronger pick.
Claude Sonnet 4.6 is better for coding with a score of 97 vs Grok 4's 80 (out of 100). Claude Opus 5.5 is the overall coding leader in this directory at 100/100.
Grok 4 is faster with a fast speed rating (score: 4) vs Claude Sonnet 4.6's balanced rating (score: 3). Speed matters most for interactive and high-throughput work; for batch jobs the Claude Sonnet 4.6 latency penalty is usually invisible.
Replaced by Claude Sonnet 5 and then Sonnet 5.5, which is stronger and cheaper. GPT-5.5 or GPT-5.4 are better picks when OpenAI computer-use workflows are the priority. Avoid it if you are starting new work — Claude Sonnet 5.5 is stronger and cheaper at $2/$10. That is the main case for looking at Grok 4 instead.
Retired from xAI's API on May 15, 2026. Less established ecosystem and tooling than OpenAI or Anthropic. Avoid it if you need the highest writing quality or the most reliable production-grade output — Claude wins both. Against Claude Sonnet 4.6 specifically, the gap shows up most on coding (97 vs 80).
Take a moderate workload of 10M input and 2M output tokens a month. Grok 4 runs $60.00 (at $3/1M in and $15/1M out); Claude Sonnet 4.6 runs $60.00 (at $3/1M in and $15/1M out). The gap is small enough that price should not decide this one. 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 Sonnet 4.6 for daily coding and writing, with Grok 4 handling historical reference — use Grok 4.7 for new work. Routing high-volume, low-stakes calls to Grok 4 at $3/1M and reserving Claude Sonnet 4.6 for the hard cases is usually the cheapest arrangement that does not cost you quality.