Grok vs ChatGPT vs Claude vs Gemini: 2026 Comparison
Grok 4 vs GPT-5.4 vs Claude Opus 4.6 vs Gemini 3.1 Pro — the 4-way AI comparison with real benchmarks and pricing.
Four frontier models, four different bets. Grok 4 bets on multi-agent collaboration and real-time data. GPT-5.4 bets on computer use. Claude Opus 4.6 bets on tool-augmented reasoning. Gemini 3.1 Pro bets on scientific reasoning and cost. None of them wins everything.
Where each model stands
Grok 4 (xAI) uses a four-agent architecture that collaborates on tasks. It has a 2M token context, scores 75% on SWE-bench, and its API starts at $2/M input. Deep X (Twitter) integration gives it real-time data that nobody else has.
GPT-5.4 (OpenAI, March 5) can operate a desktop better than humans: 75% OSWorld vs the 72.4% human baseline. 1M context, $2.50/M input.
Claude Opus 4.6 (Anthropic, Feb 5) scores 1606 Elo on expert tasks, far ahead of the competition. It outputs up to 128K tokens, double anyone else.
Gemini 3.1 Pro (Google, Feb 19) scores 94.3% on GPQA Diamond and 77.1% on ARC-AGI-2. It's the only one that processes video and audio natively. Cheapest output at $12/M.
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Benchmarks side by side
Coding (SWE-bench): Grok 4 at 75%, GPT-5.4 at 74.9%, Claude at 74%+, Gemini at 63.8%. Scientific reasoning (GPQA Diamond): Gemini at 94.3%, GPT-5.4 at 92.8%, Claude at 91.3%. Abstract reasoning (ARC-AGI-2): Gemini at 77.1%, GPT-5.4 at 73.3%.
Grok 4's four-agent system (Grok, Harper, Benjamin, Lucas) works together on complex tasks with notably low hallucination rates. No other model has built-in multi-agent reasoning.
API pricing
Per 1M tokens (input/output): Grok 4 at $2/$15, Gemini 3.1 Pro at $2/$12, GPT-5.4 at $2.50/$15, Claude Opus 4.6 at $15/$75. Consumer plans are all around $20/mo. Grok comes bundled with X Premium+ at $22/mo.
Which one for what
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Coding: Claude and Grok are close. Grok edges SWE-bench (75% vs 74%+), but Claude runs the tools developers actually use.
Reasoning: Gemini. Best GPQA and ARC-AGI-2 scores by a clear margin.
Real-time information: Grok. X integration gives it live data nobody else can access.
Desktop automation: GPT-5.4. First model to beat humans at computer use.
Value: Gemini. Cheapest output, most generous free tier.
Read the head-to-head breakdowns: ChatGPT vs Gemini, Claude vs Gemini, Claude vs ChatGPT.