GPT-3.5 Turbo vs Grok 4.20 0309 v2
OpenAI vs xAI — benchmarks, pricing, and capabilities side by side.
- •Grok 4.20 0309 v2 has the higher intelligence index (91.1 vs 35.2)
- •GPT-3.5 Turbo is cheaper ($0.50 vs $2.00 per 1M input)
- •Grok 4.20 0309 v2 is faster
| GPT-3.5 Turbo | Grok 4.20 0309 v2 | |
|---|---|---|
| Intelligence index | 35.2 | 91.1 |
| Developer | OpenAI | xAI |
| Type | LLM | LLM |
| Access | API only | — |
| Context window | 16,385 tokens | — |
| Input price | $0.50 / 1M | $2.00 / 1M |
| Output price | $1.50 / 1M | $6.00 / 1M |
| Speed | 100 tok/s | 105 tok/s |
| Released | March 1, 2023 | April 7, 2026 |
| Parameters | — | — |
| Input modalities | Text | — |
| Output modalities | Text | — |
Shared benchmarks
GPT-3.5 Turbo
Grok 4.20 0309 v2
GPQA Diamond
30.8
91.1