Step 3.7 Flash
stepfun/step-3.7-flash
multimodal sparse-MoE reasoning.
cmd --model stepfun/step-3.7-flash
Intelligence index
19.5
Coding index
39.6
Input
$0.20 /M
Output
$1.15 /M
Cache read
$0.04 /M
Agent-loop cost
$0.09 /M in
Context window
256K tokens
Released
May 29, 2026
Modalities
→
vs. the lineup
Step 3.7 Flash 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 |
|---|---|---|---|---|---|---|
| Step 5 Preview | 43.7◆ | —◆ | $1◆ | $2.70◆ | $1.43◆ | 1M◆ |
| GLM-5.3 Flash | 41.8◆ | 71.5◆ | $0.15◆ | $0.50◆ | $0.24◆ | 1.05M◆ |
| MiniMax M2.5 | 22.8◆ | —◆ | $0.30◆ | $1.20◆ | $0.52◆ | 200K◆ |
| Gemini 3.5 Flash Lite | 22.2◆ | 49.3◆ | $0.30◆ | $2.50◆ | $0.85◆ | 1M◆ |
| Step 3.7 Flash ◆ | 19.5◆ | 39.6◆ | $0.20◆ | $1.15◆ | $0.44◆ | 256K◆ |
| Step 3.5 Flash | 17◆ | —◆ | $0.09◆ | $0.30◆ | $0.14◆ | 262K◆ |
| DeepSeek V4 Pro (latest)pinned | 36◆ | 68.8◆ | $0.66◆ | $1.98◆ | $0.99◆ | 1M◆ |
| DeepSeek V4 Flash (latest)pinned | 34◆ | 69.1◆ | $0.15◆ | $0.60◆ | $0.26◆ | 1M◆ |
coding performance
The Intelligence Index and its sub-scores, ranked against every scored model in the catalog. A metric that has not been measured for Step 3.7 Flash has been left empty.
Coding Index
39.6
#51 of 52 scored
Terminal-Bench
39.3
#51 of 52 scored
Intelligence Index
19.5
#64 of 68 scored
Long-context reasoning
73.7
reasoning across a long context
SciCode
43.9
scientific coding
GPQA Diamond
80.9
graduate-level QA
usage calculator
How far a month of credits goes on Step 3.7 Flash.
Input tokensfresh prompt
800Output tokensmodel reply
180Cache read tokensre-read context
50Kcost / request $0.0024 · in $0.20 · out $1.15 · cache $0.04 per M
fresh input 7%output 9%cache reads 84%
Requests / 30 days
2.5K
$6 credits ÷ $0.0024 per request
~507 quick fixes~101 bug fixes~17 feature PRs
what real work costs
Real coding tasks priced end to end on Step 3.7 Flash, from a quick lookup to a full-repo agent run.
One agent task
$0.03
180K in at 75% cache hit, 12K out
What you pay
$0.15 /M
all-in across every token that task touched
Sticker input
$0.20 /M
cache reads bill at $0.04 /M instead
| Task | Tokens in · out | Step 3.7 Flash | GLM-5.3 Flash | Claude Haiku 4.5 |
|---|---|---|---|---|
| Quick lookup / one-liner | 8K · 1K | $0.0016 | $0.0008 | $0.0065 |
| Review a 500-line PR | 60K · 4K | $0.0099 | $0.0060 | $0.04 |
| Fix a bug (agent loop) | 180K · 12K | $0.03 | $0.02 | $0.12 |
| Refactor a module | 320K · 20K | $0.05 | $0.03 | $0.21 |
| Full-repo agent run | 900K · 45K | $0.12 | $0.07 | $0.49 |
frequently asked
How much does Step 3.7 Flash cost?
$0.20/M input and $1.15/M output, cache reads $0.04/M. In an agent loop most input is cache-read, so the effective input rate is about $0.09/M.Which plan do I need?
Available on Go and above.
How do I switch to it?
Run
cmd --model stepfun/step-3.7-flash, 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/step-3-7-flash