LLM Comparison
GPT-5.4 vs Grok 4.20
Side-by-side specs, pricing & capabilities · Updated May 2026
Price vs Intelligence
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2/6 modelsSame tier:
| Organization | ||
| OpenTools Score | 74 8.4 | 77 19.1 |
| Family | GPT | Grok |
| Status | Current | Current |
| Release Date | Mar 2026 | Mar 2026 |
| Context Window | 1.1M tokens | 2.0M tokens |
| Input Price | $2.50/M tokens | $2.00/M tokens |
| Output Price | $15.00/M tokens | $6.00/M tokens |
| Pricing Notes | Cache read: $0.2500/M tokens | Cache read: $0.2000/M tokens |
| Capabilities | textvisioncode | textvisioncode |
| Max Output | 128K tokens | — |
| API Identifier | openai/gpt-5.4 | x-ai/grok-4.20 |
| Benchmarks | ||
| GPQA Diamond | 93openai | — |
| SWE-bench Pro | 57.7openai | — |
| OSWorld-Verified | 75openai | — |
| Terminal-Bench 2.0 | 75.1openai | — |
| ARC-AGI-2 | 73.3openai | — |
| BrowseComp | 82.7openai | — |
| MMMU-Pro | 81.2openai | — |
| MATH-500 | 94.6openai | — |
| View GPT-5.4 | View Grok 4.20 | |
Cost Calculator
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| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| Grok 4.20Cheapest | $2.00 | $3.00 | $5.00 | — |
| GPT-5.4 | $2.50 | $7.50 | $10.00 | +100% |
OpenAI
GPT-5.4
GPT-5.4 is a multimodal llm from OpenAI. Supports up to 1,050,000 token context window. Available from $2.50/M input tokens.
xAI
Grok 4.20
Grok 4.20 is a multimodal llm from xAI. Supports up to 2,000,000 token context window. Available from $2.00/M input tokens.
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