DeepSeek V4 Pro vs Grok 4.3
DeepSeek against xAI, costed on the same three workloads. Grok 4.3 is cheaper on all three workloads.
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Monthly bill, side by side
| Workload | DeepSeek V4 Pro | Grok 4.3 | Difference |
|---|---|---|---|
| Support chatbot 2,500 six-turn conversations a day |
$4,247 | $3,516 | $731 (+21%) |
| Document summarizer 1,000 single-shot summaries a day |
$578 | $518 | $60.66 (+12%) |
| Coding agent 200 twelve-turn sessions a day |
$3,231 | $2,835 | $396 (+14%) |
No prompt caching and no batch discount on either side, so the comparison is like for like. Both figures assume 30 days a month.
The rate cards
| DeepSeek V4 Pro | Grok 4.3 | |
|---|---|---|
| Input, per 1M tokens | $1.32 | $1.25 |
| Output, per 1M tokens | $3.96 | $2.5 |
| Cached input | $0.044 | $0.2 |
| Context window | 1M | 1M |
| Maximum output | 384K | 1M |
| Reasoning model | yes | yes |
| Vision | no | yes |
Beyond the price
- Grok 4.3 can write up to 1M tokens in one response, against 384K for DeepSeek V4 Pro.
- Only Grok 4.3 accepts images as input.
- Cached input costs 97% less than fresh input on DeepSeek V4 Pro and 84% less on Grok 4.3, which matters most for workloads that resend the same prompt.
Run this comparison on your own numbers
Full detail: DeepSeek V4 Pro pricing · Grok 4.3 pricing
More comparisons
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- Grok 4.3 vs GPT-5.1
Common questions
Which is cheaper, DeepSeek V4 Pro or Grok 4.3?
Grok 4.3 is cheaper on all three workloads.
How much would DeepSeek V4 Pro and Grok 4.3 cost each month?
On PromptSpend's standard workloads, per month: support chatbot: DeepSeek V4 Pro $4,247, Grok 4.3 $3,516 (Grok 4.3 is cheaper by $731); document summarizer: DeepSeek V4 Pro $578, Grok 4.3 $518 (Grok 4.3 is cheaper by $60.66); coding agent: DeepSeek V4 Pro $3,231, Grok 4.3 $2,835 (Grok 4.3 is cheaper by $396). No prompt caching and no batch discount is assumed.
How do DeepSeek V4 Pro and Grok 4.3 differ apart from price?
Grok 4.3 can write up to 1M tokens in one response, against 384K for DeepSeek V4 Pro. Only Grok 4.3 accepts images as input. Cached input costs 97% less than fresh input on DeepSeek V4 Pro and 84% less on Grok 4.3, which matters most for workloads that resend the same prompt.