DEEPSEEK VS XAI
DeepSeek V4 Flash vs Grok 4.5
DeepSeek V4 Flash is about 17x cheaper than Grok 4.5 on a blended 3:1 input:output rate — the same 10K-in/2K-out request costs $0.002 vs $0.032. DeepSeek V4 Flash has the larger context window (1,000,000 vs 500,000 tokens).
Pricing verified
API pricing per 1M tokens
| Model | Input / 1M tokens | Output / 1M tokens | Blended (3:1 mix) |
|---|---|---|---|
| DeepSeek V4 Flash | $0.14 | $0.28 | $0.175 |
| Grok 4.5 | $2.00 | $6.00 | $3.00 |
Rates from official DeepSeek pricing and official xAI pricing, checked 2026-08-11.
What a real workload costs
Example: one request with 10,000 input tokens and 2,000 output tokens, then that request at 100,000 runs per month.
| Model | Per request (10K in / 2K out) | Per month (100K requests) | Monthly delta |
|---|---|---|---|
| DeepSeek V4 Flash | $0.002 | $196 | — |
| Grok 4.5 | $0.032 | $3,200 | +$3,004 |
Model your own prompt sizes and volumes in the token cost analyzer, or check caching savings with the prompt caching calculator.
Specs side by side
| Spec | DeepSeek V4 Flash | Grok 4.5 |
|---|---|---|
| Provider | DeepSeek | xAI |
| Context window | 1,000,000 tokens | 500,000 tokens |
| Model class | General text | Reasoning |
| Tokenizer | Proprietary (counts estimated) | Proprietary (counts estimated) |
Count tokens for each model on its own page: DeepSeek V4 Flash token counter and Grok 4.5 token counter. All DeepSeek models are on the DeepSeek Token Counter. All xAI models are on the Grok Token Counter.
FAQ
DeepSeek V4 Flash vs Grok 4.5 FAQ
Which is cheaper, DeepSeek V4 Flash or Grok 4.5?
DeepSeek V4 Flash is cheaper. At rates checked 2026-08-11, DeepSeek V4 Flash costs $0.14 input / $0.28 output per 1M tokens, while Grok 4.5 costs $2.00 input / $6.00 output — about a 17x difference on a typical 3:1 input-heavy workload.
How much does a real request cost on DeepSeek V4 Flash vs Grok 4.5?
A request with 10,000 input tokens and 2,000 output tokens costs about $0.002 on DeepSeek V4 Flash and $0.032 on Grok 4.5. At 100,000 such requests per month that is $196 vs $3,200 — a difference of $3,004 per month.
Which has the bigger context window, DeepSeek V4 Flash or Grok 4.5?
DeepSeek V4 Flash. It supports 1,000,000 tokens of context versus 500,000 tokens — roughly 750,000 English words in one request.
Do DeepSeek V4 Flash and Grok 4.5 count tokens the same way?
Not exactly. DeepSeek V4 Flash uses a proprietary tokenizer (counts are estimates) and Grok 4.5 uses a proprietary tokenizer (counts are estimates). The same prompt will tokenize differently, which shifts effective cost per word.