Grok 4.3 vs DeepSeek V4.1 Flash
DeepSeek V4.1 Flash is the better buy: the AIGROW small-business benchmark cannot tell the two apart, and DeepSeek V4.1 Flash has the lower list price. Grok 4.3 passed 16 of 20 tasks and costs $1.25 in and $2.50 out per million tokens; DeepSeek V4.1 Flash passed 18 and costs $0.30 in and $1.20 out.
AIGROW credit covers Claude Opus 5.5, Claude Fable 5.2, Claude Fable 5.1, GPT-6 Astra, Claude Sonnet 5.5, GPT-6.1 Sol, GPT-6.1 Terra, Grok 4.7 and Gemini 4 Argon. Grok 4.7 below list price
$25 a month brings $110 of API credit and cancels any time; $25 once buys $100. US dollars, standard rate, shortest context band. Cost per pass from the AIGROW small-business benchmark.
- Grok 4.3
- $4.10
- Tasks passed
- 16 of 20
- DeepSeek V4.1 Flash
- $1.05
- Tasks passed
- 18 of 20
AIGROW small-business benchmark, failed runs included.
xAI's cheapest model against DeepSeek's, for teams comparing low-cost options outside OpenAI and Google. DeepSeek V4.1 Flash costs $1.05 per 1,000 passing answers on the AIGROW small-business benchmark, Grok 4.3 $4.10. 1,000 support replies cost $4.75 on Grok 4.3 and $1.38 on DeepSeek V4.1 Flash, so Grok 4.3 costs 3.4 times as much.
What each one costs
The API price per million tokens and the cheapest app plan with each model, from the makers’ own pages. Each name opens that model’s full price page.
- Grok 4.3
- On the xAI API, Grok 4.3 costs $1.25 per million input tokens and $2.50 per million output tokens. Grok has a free plan and paid plans from $8/mo (Plus); the plan list does not name Grok 4.3. Plan prices read 22 October 2026.
- DeepSeek V4.1 Flash
- On the DeepSeek API, DeepSeek V4.1 Flash costs $0.30 per million input tokens and $1.20 per million output tokens.
Side by side
Each maker’s published rate for its standard tier. Cached input is what a repeated prompt prefix costs once the provider has stored it.
| Fact | Grok 4.3 | DeepSeek V4.1 Flash |
|---|---|---|
| Maker | xAI | DeepSeek |
| Tier | Small and fast | Small and fast |
| Input, per M tokens | $1.25 | $0.30 |
| Output, per M tokens | $2.50 | $1.20 |
| Cached input | $0.20 | $0.006 |
| Context window | 1M | 1M |
| Released | Not published | 10 Sep 2026 |
| Weights | Closed weights | Open weights |
What a job costs on each
1,000 runs of each job at the two list prices. The gap moves from job to job because the models price input, output and cached context differently.
| Job | Grok 4.3 | DeepSeek V4.1 Flash | Cheaper |
|---|---|---|---|
| Support reply3,000 in, 400 out. | $4.75 | $1.38 | DeepSeek V4.1 Flash, 71% less |
| Document summary25,000 in, 1,000 out. | $33.75 | $8.70 | DeepSeek V4.1 Flash, 74% less |
| Agent task80,000 in (70,000 cached), 3,000 out. | $34.00 | $7.02 | DeepSeek V4.1 Flash, 79% less |
The token counts are ours, chosen to look like real work; the prices are the makers’. A model with no published cache price bills the agent task’s repeated context at its full input rate.
The small print
What each base rate leaves out, from the makers’ own pages: surcharges, discounts, promotions and cache pricing.
- Grok 4.3
- Prompts of 200K tokens or more: $2.50 / $5, cached $0.40. Batch 20% off. xAI no longer lists 'fast' variants; this is its low-cost model. Release date not stated on the official pages. xAI’s pricing page
- DeepSeek V4.1 Flash
- Peak-hour rate, recorded as the list price. Off-peak is half: $0.15 / $0.60, cache hit $0.003. API name deepseek-flash, which serves DeepSeek-V4.1-Flash-1017 since 2026-10-17 at unchanged prices. Max output 384K. DeepSeek’s pricing page
Other comparisons
Every head to head on the list that involves Grok 4.3 or DeepSeek V4.1 Flash.
Compare Grok 4.3 and DeepSeek V4.1 Flash with 52 other models
The price list sets every model’s input and output price side by side, with what a support reply, a document summary and an agent task cost on each.
Prices checked 12 November 2026