GPT-4o wins on writing quality and price ($2.5 vs $3/1M input). Grok 4 wins on coding (80 vs 58) and context window (256K vs 128K). For most workflows, GPT-4o is the stronger default — legacy multimodal model — kept for existing integrations, not new work.
The safest GPT-4o vs Grok 4 default, the cheaper option worth trying first, and the specialist pick — before you read the detail below.
GPT-4o is the strongest answer here for GPT-4o vs Grok 4 — pick it when quality of output matters more than the $2.50/1M/1M input you pay for it.
Grok 4 handles the same job for about 36% less per token. Start here and only move up if the output is not good enough.
GPT-4o is the fastest of these for GPT-4o vs Grok 4 — worth it when latency is what the reader notices, not the last few points of reasoning depth.
Grok 4 leads on coding with a score of 80 vs 58 for GPT-4o.
Grok 4 has the larger context window: 256K vs 128K for GPT-4o.
GPT-4o is cheaper at $2.5/1M input tokens vs $3/1M for Grok 4.
Choose GPT-4o for multimodal tasks and image-adjacent workflows. Its images and writing scores are what carry the recommendation here.
Choose Grok 4 when your work is mostly historical reference — use Grok 4.7 for new work — that is the workload it was tuned for.
Both models serve different primary workflows — GPT-4o for multimodal tasks and image-adjacent workflows, Grok 4 for historical reference — use Grok 4.7 for new work — so running each where it has a clear edge often beats forcing one to do both.
Switch the scoring lens to see whether the GPT-4o vs Grok 4 answer changes when cost, speed, or long-document depth leads the decision.
xAI / Balanced / Sep 2, 2026
Strong coding value with 2M context — an underrated pick at this price.
Ranks models by the broadest mix of coding, writing, research, and long-context usefulness.
You need the highest writing quality or the most reliable production-grade output — Claude wins both.
Where the GPT-4o vs Grok 4 recommendation shifts once you weigh price or latency differently.
Best all-around pick for image-heavy and multimodal workflows.
Strong coding value with 2M context — an underrated pick at this price.
List prices and published scores — the numbers this page's pick is built from.
| Model | Input | Output | Est. month | Context | Speed | Coding | Writing | Research |
|---|---|---|---|---|---|---|---|---|
| GPT-4oOpenAI | $2.50/1M | $10.00/1M | $45 | 128k tokens | Fast | 58 | 76 | 65 |
| Grok 4xAI | $2.00/1M | $6.00/1M | $32 | 2M tokens | Fast | 92 | 70 | 86 |
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 GPT-4o vs Grok 4, what it is genuinely good at, and where we would steer you away from it.
The default answer for GPT-4o vs Grok 4 — 80/100 on the images axis, and the model we would start with unless the price below rules it out.
Versatile multimodal model that handles image-related workflows and mixed-media prompts well.
You need the latest reasoning or coding performance — GPT-5.4 replaces it for serious work.
Still a reliable multimodal pick, especially for teams already in the OpenAI ecosystem.
Full pricing, benchmark table and release notes on the GPT-4o page.
Where most budgets should land for GPT-4o vs Grok 4 — about 36% less per token than GPT-4o, and still 68/100 on the images axis.
xAI's latest flagship with strong coding benchmark performance, a 2M token context window, and aggressive pricing at $2/$6 per million tokens.
You need the highest writing quality or the most reliable production-grade output — Claude wins both.
Strong coding benchmark with excellent value. The $2/$6 pricing and 2M context make it competitive with more expensive alternatives.
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.
Newsletter
We email when the GPT-4o vs Grok 4 pick changes, when one of these models moves on price, or when something new displaces the current leader.
No spam. Useful updates only. Affiliate disclosures always clearly labeled.
GPT-4o wins on more of the categories we score — images, writing, multimodal — 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": GPT-4o is aimed at multimodal tasks and image-adjacent workflows, Grok 4 at historical reference — use Grok 4.7 for new work.
GPT-4o is cheaper at $2.5/1M input and $10/1M output. Grok 4 costs $3/1M input and $15/1M output.
Grok 4 has the larger context window at 256K tokens vs GPT-4o's 128K. For large document analysis, Grok 4 is the stronger pick.
Grok 4 is better for coding with a score of 80 vs GPT-4o's 58 (out of 100). Claude Opus 5.5 is the overall coding leader in this directory at 100/100.
Both GPT-4o and Grok 4 have similar speed profiles — rated fast. Neither will be the bottleneck if latency is your deciding factor.
Outclassed by newer models on pure coding and reasoning. Gemini 3.1 Pro now handles multimodal at a lower price. Avoid it if you need current reasoning or coding performance — the GPT-6 family replaces it for serious work. 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 GPT-4o specifically, the gap shows up most on coding (58 vs 80).
Take a moderate workload of 10M input and 2M output tokens a month. GPT-4o runs $45.00 (at $2.5/1M in and $10/1M out); Grok 4 runs $60.00 (at $3/1M in and $15/1M out). That is a $15.00/month difference — GPT-4o 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 GPT-4o for multimodal tasks and image-adjacent workflows, with Grok 4 handling historical reference — use Grok 4.7 for new work. Since GPT-4o is both the stronger and the cheaper option here, a split mainly makes sense if Grok 4 covers a capability you specifically need.