LLM Comparison
GPT-5.4 Mini vs Grok 4.20
Side-by-side specs, pricing & capabilities · Updated September 2026
Price vs Intelligence
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2/6 modelsSame tier:
| Organization | ||
| OpenTools Score | 46 17.6 | 72 18.0 |
| Family | GPT | Grok |
| Status | Current | Current |
| Release Date | Mar 2026 | Mar 2026 |
| Context Window | 400K tokens | 2.0M tokens |
| Input Price | $0.75/M tokens | $2.00/M tokens |
| Output Price | $4.50/M tokens | $6.00/M tokens |
| Pricing Notes | Cache read: $0.0750/M tokens | Cache read: $0.2000/M tokens |
| Capabilities | textvisioncode | textvisioncode |
| Training Cutoff | Aug 31, 2025 | — |
| Max Output | 128K tokens | — |
| API Identifier | openai/gpt-5.4-mini | x-ai/grok-4.20 |
| Benchmarks | ||
| GPQA Diamond | 88openai | 91.1111artificial-analysis |
| SWE-bench Pro | 54.4openai | — |
| OSWorld-Verified | 72.1openai | — |
| Terminal-Bench 2.0 | 60openai | — |
| MMMU-Pro | 76.6openai | — |
| Artificial Analysis Intelligence Index v4.3 | 24.5789artificial-analysis | — |
| SciCode | 52.0833artificial-analysis | — |
| Terminal-Bench 2.1 | 59.176artificial-analysis | — |
| View GPT-5.4 Mini | View Grok 4.20 | |
Cost Calculator
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| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| GPT-5.4 MiniCheapest | $0.75 | $2.25 | $3.00 | — |
| Grok 4.20 | $2.00 | $3.00 | $5.00 | +67% |
OpenAI
GPT-5.4 Mini
GPT-5.4 Mini is a multimodal llm from OpenAI. Supports up to 400,000 token context window. Available from $0.75/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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