token.app › Compare › o1 vs Grok 4.5
o1 vs Grok 4.5
Grok 4.5 leads on 2 of 2 shared benchmarks. Grok 4.5 is 8.8× cheaper per token on a blended 3:1 basis. Grok 4.5 accepts the larger context window (500K).
Head to head
Blended price uses a 3:1 input:output mix
| o1 | Grok 4.5 | |
|---|---|---|
| Provider | OpenAI | xAI |
| Input $/1M | $15.00 | $2.00 |
| Output $/1M | $60.00 | $6.00 |
| Blended $/1M | $26.25 | $3.00 |
| Context window | 200K | 500K |
| Max output | 100K | — |
| Released | Dec 2024 | Jul 2026 |
| Licence | Proprietary | Proprietary |
| GPQA Diamond | 76.8% | 93.4% |
| OTIS Mock AIME | 73.3% | 97.8% |
Benchmark scores independently run and published by Epoch AI, 'AI Benchmarking Hub', used under CC BY 4.0. Only benchmarks with a score for BOTH models are compared.
Choose o1 if…
- No clear advantage on the data we hold.
Choose Grok 4.5 if…
- Costs less per token — $3.00 vs $26.25 blended
- Higher GPQA Diamond (93.4% vs 76.8%)
- Higher OTIS Mock AIME (97.8% vs 73.3%)
- Larger context window (500K)
- Newer model (released Jul 2026)
FAQ
Which is better, o1 or Grok 4.5?
Across the 2 benchmarks both models have independently-run scores for, o1 leads on 0 and Grok 4.5 leads on 2. Benchmarks are one input — price and context window are on this page too.
Is o1 cheaper than Grok 4.5?
Grok 4.5 is cheaper: $3.00 versus $26.25 per million tokens blended at 3:1 input:output. Input alone: $15.00 vs $2.00. Output alone: $60.00 vs $6.00.
What context windows do o1 and Grok 4.5 have?
o1: 200,000 tokens. Grok 4.5: 500,000 tokens.
Who makes o1 and Grok 4.5?
o1 is made by OpenAI. Grok 4.5 is made by xAI.