DeepSeek V4 Pro vs Grok 4.5
Both are Flagship-tier models, from DeepSeek and xAI respectively. DeepSeek V4 Pro is the cheaper choice overall at a 4:1 input:output ratio.
Which is cheaper
- Input price: DeepSeek V4 Pro is cheaper ($1.32 vs $2.00).
- Output price: DeepSeek V4 Pro is cheaper ($3.96 vs $6.00).
- Blended, 4:1 input:output ratio: DeepSeek V4 Pro is 34% cheaper ($1.85 vs $2.80 per weighted 1M tokens).
Side by side
| Spec | DeepSeek V4 Pro | Grok 4.5 |
|---|---|---|
| Provider | DeepSeek | xAI |
| Tier | Flagship | Flagship |
| Context window | 1M | 500K |
| Max output | 384K | — |
| Input $/1M | $1.32 | $2.00 |
| Output $/1M | $3.96 | $6.00 |
| Cache read $/1M | $0.044 | $0.30 |
| Modalities | text | text, image |
DeepSeek V4 Pro. Peak cache-miss rate, which is this dataset's standard tier. DeepSeek's own page states off-peak rates are half the peak rates, with peak hours 01:00-04:00 and 06:00-10:00 UTC Monday to Friday: off-peak is $0.66 input / $1.98 output, cache-hit input $0.022. The off-peak half-price is a time-of-day discount and is excluded here for the same reason batch and cached-input discounts are.
Grok 4.5. Short-context rate, for prompts under 200K tokens. At 200K and above: $4 input / $12 output, cache read $0.60 per 1M. Same input and output price as Grok 4.6 with a cheaper cache read; the previous flagship, not marked deprecated.
Sources
DeepSeek V4 Pro — verified August 30, 2026
Grok 4.5 — verified August 29, 2026
Full DeepSeek V4 Pro pricing page → · Full Grok 4.5 pricing page →