DeepSeek V4.1 Flash Ultrafast
deepseek/deepseek-v4.1-flash-ultrafast
Accelerated V4.1 Flash.
cmd --model deepseek/deepseek-v4.1-flash-ultrafast
Intelligence index
not yet scored
Coding index
not yet scored
Input
$2.40 /M
Output
$9.60 /M
Cache read
$0.05 /M
Agent-loop cost
$0.75 /M in
Context window
1.05M tokens
Released
November 6, 2026
Modalities
→
vs. the lineup
DeepSeek V4.1 Flash Ultrafast beside its stablemates and nearest rivals. The ◆ marks the best value in each column across every row shown.
pin a rival:
| Model | Intelligence | Coding | Input $/M | Output $/M | Blended $/M | Context |
|---|---|---|---|---|---|---|
| DeepSeek V4.1 Flash (latest) | 39.5◆ | —◆ | $0.15◆ | $0.60◆ | $0.26◆ | 1M◆ |
| DeepSeek V4 Pro (latest) | 36◆ | 68.8◆ | $0.66◆ | $1.98◆ | $0.99◆ | 1M◆ |
| DeepSeek V4 Flash Vision (exp) | 34.8◆ | 65◆ | $0.15◆ | $0.60◆ | $0.26◆ | 1M◆ |
| DeepSeek V4 Flash (latest) | 34◆ | 69.1◆ | $0.15◆ | $0.60◆ | $0.26◆ | 1M◆ |
| DeepSeek V4.1 Flash Ultrafast ◆ | —◆ | —◆ | $2.40◆ | $9.60◆ | $4.20◆ | 1.05M◆ |
| DeepSeek V4 Flash Fast | —◆ | —◆ | $0.28◆ | $0.56◆ | $0.35◆ | 1M◆ |
| DeepSeek V4.1 Flash Fast (latest)pinned | —◆ | —◆ | $0.16◆ | $0.58◆ | $0.27◆ | 1M◆ |
| Kimi K3.1 Propinned | —◆ | —◆ | $2◆ | $10◆ | $4◆ | 1.05M◆ |
usage calculator
How far a month of credits goes on DeepSeek V4.1 Flash Ultrafast.
DeepSeek V4.1 Flash Ultrafast runs on GOAT and up — from $10/mo.
Input tokensfresh prompt
800Output tokensmodel reply
180Cache read tokensre-read context
50Kcost / request $0.0060 · in $2.40 · out $9.60 · cache $0.05 per M
fresh input 32%output 29%cache reads 40%
Requests / 30 days
3.3K
$20 credits ÷ $0.0060 per request
~661 quick fixes~132 bug fixes~22 feature PRs
what real work costs
Real coding tasks priced end to end on DeepSeek V4.1 Flash Ultrafast, from a quick lookup to a full-repo agent run.
One agent task
$0.23
180K in at 75% cache hit, 12K out
What you pay
$1.20 /M
all-in across every token that task touched
Sticker input
$2.40 /M
cache reads bill at $0.05 /M instead
| Task | Tokens in · out | DeepSeek V4.1 Flash Ultrafast | Claude Sonnet 5.5 | Claude Haiku 4.5 |
|---|---|---|---|---|
| Quick lookup / one-liner | 8K · 1K | $0.01 | $0.01 | $0.0065 |
| Review a 500-line PR | 60K · 4K | $0.08 | $0.08 | $0.04 |
| Fix a bug (agent loop) | 180K · 12K | $0.23 | $0.22 | $0.12 |
| Refactor a module | 320K · 20K | $0.42 | $0.40 | $0.21 |
| Full-repo agent run | 900K · 45K | $0.94 | $0.92 | $0.49 |
frequently asked
How much does DeepSeek V4.1 Flash Ultrafast cost?
$2.40/M input and $9.60/M output, cache reads $0.05/M. In an agent loop most input is cache-read, so the effective input rate is about $0.75/M.Which plan do I need?
Available on GOAT and above.
How do I switch to it?
Run
cmd --model deepseek/deepseek-v4.1-flash-ultrafast, or type /model in a session and pick it. You can switch mid-session without losing context.Ship code that matches your taste
Command Code is the AI coding agent that continuously learns your taste. Start for $1.
Benchmarks from Artificial Analysis (v4.3)commandcode.ai/models/deepseek-v4-1-flash-ultrafast