ChatGPT and Grok are the two most personality-driven AI models on the market, but they serve different strengths. GPT-5.4 leads on coding benchmarks and desktop computer-use via API. Grok 4 counters with a massive 2M token context window (7× ChatGPT's 272K), real-time X/Twitter data access, and identical pricing at $2/1M input vs GPT-5.4's $2.50. For most developers, ChatGPT's ecosystem depth wins. For research, large-context tasks, or anything requiring live social media data, Grok 4 is the stronger pick.
OpenAIPremium
GPT-5.4
Best for agentic automation and desktop control workflows.
Winner
VS
xAIBalanced
Grok 4
Strong coding value with 2M context — an underrated pick at this price.
At a glance
GPT-5.4
Grok 4
Input cost / 1M tokens
$$2.50/1M
$$2.00/1M
Output cost / 1M tokens
$$15.00/1M
$$6.00/1M
Context window
272k tokens
2M tokens
Speed
Balanced
Fast
Price tier
Premium
Balanced
Benchmarks
SWE-bench (coding)
74.9%
54%
Arena Elo
1,355
1,305
MMLU
91%
87.5%
How they compare
Which model wins for each use case — and why.
CodingGPT-5.4 wins
GPT-5.4 leads on SWE-bench at 74.9% and has broader IDE and API ecosystem support. Grok 4 handles code competently but lacks the tooling integration.
ResearchGrok 4 wins
Grok 4's 2M token context window is 7× ChatGPT's 272K, and its real-time access to X/Twitter data makes it uniquely useful for current events research.
Context WindowGrok 4 wins
Grok 4 has a 2M token context window vs GPT-5.4's 272K. For analyzing large codebases, legal documents, or research corpora, Grok wins decisively.
Agentic TasksGPT-5.4 wins
GPT-5.4 offers desktop computer-use via API — clicking, typing, and navigating software autonomously. Grok has no equivalent capability for agentic automation.
PriceGrok 4 wins
Grok 4 costs $2/1M input vs GPT-5.4's $2.50/1M. Grok is slightly cheaper while offering a larger context window.
Which should you pick?
Pick GPT-5.4 if…
You're building agentic workflows that need desktop or browser control via API
You rely on OpenAI's ecosystem: Assistants API, function calling, GPT Store integrations
Coding quality and SWE-bench performance matter for your use case
You need image generation alongside text in the same platform
For most workflows, GPT-5.4 is the stronger choice.
Best choice when you need a model that can operate software autonomously at the older GPT-5.4 price tier. For current premium coding quality, Claude Opus 4.7 leads.
The case for each model
What each one is genuinely good at, where it falls down, and when we would steer you away from it.
Our overall pick in this comparison. Against Grok 4 it costs about 54% more per token.
OpenAI's latest flagship with unique desktop-control capabilities — it can see your screen, click, and navigate apps via the API.
Input
$2.50/1M
Output
$15.00/1M
Context
272k tokens
Speed
Balanced
What people actually use it for
Building agents that browse the web and operate desktop software autonomously via the API
Complex multi-step reasoning for financial modeling and decision analysis
Autonomous test-run-debug loops for coding with computer-use control
Where it wins
Only frontier model that can control a desktop via API (click, type, navigate)
Strong at multi-step agentic tasks and autonomous workflows
Competitive coding performance with 74.9% SWE-bench score
Where it falls down
Claude Opus 4.7 and GPT-5.5 now outperform it on current premium coding benchmarks
Smaller context window (272K) vs Gemini 3.1 Pro (2M) for research
Skip it if
You need the highest current coding benchmark scores — Claude Opus 4.7 and GPT-5.5 are newer premium picks.
Our verdict
Best choice when you need a model that can operate software autonomously at the older GPT-5.4 price tier. For current premium coding quality, Claude Opus 4.7 leads.
Full pricing, benchmark table and release notes on the GPT-5.4 page.
The runner-up here, but not by a wide margin. Against GPT-5.4 it costs about 54% less per token, takes 7x the context and answers faster.
xAI's latest flagship with strong coding benchmark performance, a 2M token context window, and aggressive pricing at $2/$6 per million tokens.
Input
$2.00/1M
Output
$6.00/1M
Context
2M tokens
Speed
Fast
What people actually use it for
Early-stage research mapping — exploring a new topic before narrowing down
Analyzing large codebases or datasets within a 2M-token context window
Competitive intelligence and market research with broad, fast synthesis
Where it wins
75% SWE-bench score — strong coding performance close to top Claude models
2M token context window at $2/$6 per million tokens
Fast and responsive for exploration and open-ended research loops
Where it falls down
Claude Opus 4.6 and Sonnet 4.6 lead on pure coding benchmarks
Less established ecosystem and tooling than OpenAI or Anthropic
Skip it if
You need the highest writing quality or the most reliable production-grade output — Claude wins both.
Our verdict
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.
Frequently asked questions
Is ChatGPT or Grok better in 2026?
ChatGPT (GPT-5.4) leads on coding and agentic capabilities. Grok 4 leads on context window size and real-time data. For most developers, ChatGPT's ecosystem gives it the edge.
Is Grok cheaper than ChatGPT?
Slightly. Grok 4 costs $2/1M input vs GPT-5.4's $2.50/1M. The difference is modest — about 20% cheaper — but Grok also offers 7× the context window at that price.
Does Grok have access to real-time data?
Yes. Grok has access to real-time X/Twitter data, making it useful for current events, trending topics, and social media analysis. ChatGPT uses Bing search but doesn't have native X access.
Which has a bigger context window — ChatGPT or Grok?
Grok 4 has a 2M token context window — about 7× ChatGPT's 272K. For analyzing very large documents or codebases in a single prompt, Grok wins significantly.
Is Grok free?
Grok is available free with limited usage on X. For API access, Grok 4 costs $2/1M input tokens. ChatGPT is also free with limits; the API costs $2.50/1M input.