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Step 3.7 Flash

stepfun/step-3.7-flash

Newer StepFun flash model for faster agents, coding, and multimodal prompts

Input modalitiesT
Output modalitiesT
Source-linkedOpen weightsReleased 2026-05-29
Report data
Context window256K
Maximum output256K
Provider offers11
Knowledge cutoff2026-03-01
Capabilities

What this model supports

ReasoningYes
Tool callingYes
Structured outputNo
AttachmentsYes
Temperature controlYes
Open weightsYes
Creator
StepFun
Family
Not documented
Modalities
Image, Text, Video
License
Not documented
Release date
2026-05-29
Model ID
stepfun/step-3.7-flash
Market availability

Provider pricing

Report price →
Providers offering Step 3.7 Flash
ProviderProvider model IDContextInput / 1MOutput / 1MCached / 1MFeaturesAll pricing
UnoRouter logoUnoRouterstep-3.7-flash:free256K$0$0R T ·
View
{
  "input": 0,
  "output": 0
}
StepFun Step Plan (China) logoStepFun Step Plan (China)step-3.7-flash256KR T ·
View
{}
StepFun Step Plan (Global) logoStepFun Step Plan (Global)step-3.7-flash256KR T ·
View
{}
Nvidia logoNvidiastepfun-ai/step-3.7-flash256K$0$0R T ·
View
{
  "input": 0,
  "output": 0
}
StepFun (China) logoStepFun (China)step-3.7-flash256K$0.185$1.11$0.037R T ·
View
{
  "cache_read": 0.037,
  "input": 0.185,
  "output": 1.11
}
StepFun (Global) logoStepFun (Global)step-3.7-flash256K$0.185$1.11$0.037R T ·
View
{
  "cache_read": 0.037,
  "input": 0.185,
  "output": 1.11
}
ZenMux logoZenMuxstepfun/step-3.7-flash256K$0.2$1.15R T ·
View
{
  "input": 0.2,
  "output": 1.15
}
Vercel AI Gateway logoVercel AI Gatewaystepfun/step-3.7-flash256K$0.2$1.15$0.04R T ·
View
{
  "cache_read": 0.04,
  "input": 0.2,
  "output": 1.15
}
EmpirioLabs AI logoEmpirioLabs AIstep-3-7-flash256K$0.2$1.15$0.04R T S
View
{
  "cache_read": 0.04,
  "input": 0.2,
  "output": 1.15
}
OpenRouter logoOpenRouterstepfun/step-3.7-flash256K$0.2$1.15$0.04R T S
View
{
  "cache_read": 0.04,
  "input": 0.2,
  "output": 1.15
}
Hugging Face logoHugging Facestepfun-ai/Step-3.7-Flash262.144K$0.2$1.15R T ·
View
{
  "input": 0.2,
  "output": 1.15
}
Evidence

Published benchmark results

Agentic Index vs top 8 models
GPT-5.6 Sol
54.0
Claude Fable 5
52.8
GPT-5.6 Terra
47.4
Anthropic: Claude Opus 4.8
47.2
Claude Sonnet 5
46.7
xAI: Grok 4.5
45.7
GPT-5.6 Luna
45.6
Step 3.7 Flash
21.5
Artificial Analysis Coding Index vs top 7 models
GPT-5-Codex
38.9
Step 3.7 Flash
37.1
Step 3.5 Flash 2603
34.6
North Mini Code
33.4
Gemini 2.5 Pro
32.0
Step 3.5 Flash
31.6
GLM-4.6
29.5
BrowseComp vs top 8 models
GPT-5.6 Sol
90.4
GPT-5.5 Pro
90.1
GPT-5.4 Pro
89.3
GPT-5.6 Terra
87.5
Claude Sonnet 5
84.7
GPT-5.5
84.4
MiniMax-M3
83.5
Step 3.7 Flash
75.8
ClawEval vs top 1 models
Step 3.7 Flash
67.1
Coding Index vs top 8 models
GPT-5.6 Sol
77.4
GPT-5.6 Terra
76.7
Claude Fable 5
76.5
GPT-5.5
74.9
Anthropic: Claude Opus 4.8
74.3
Anthropic: Claude Opus 4.7
73.6
xAI: Grok 4.5
72.4
Step 3.7 Flash
39.6
Design Arena: 3d vs top 8 models
Z.ai: GLM 5.2
1371.0
Claude Fable 5
1366.0
Anthropic: Claude Opus 4.6
1349.0
Kimi K2.6
1348.0
xAI: Grok 4.5
1338.0
Z.ai: GLM 5.1
1336.0
DeepSeek V4 Pro
1326.0
Step 3.7 Flash
1192.0
Design Arena: asciiart vs top 8 models
Claude Fable 5
1374.0
Anthropic: Claude Opus 4.7
1324.0
Gemini 3.1 Pro Preview
1313.0
Anthropic: Claude Opus 4.8
1308.0
Gemini 3.5 Flash
1305.0
Anthropic: Claude Opus 4.6
1303.0
GPT-5.5
1296.0
Step 3.7 Flash
1215.0
Design Arena: codecategories vs top 8 models
Z.ai: GLM 5.2
1351.0
Claude Fable 5
1345.0
Anthropic: Claude Opus 4.6
1336.0
Anthropic: Claude Opus 4.7
1330.0
xAI: Grok 4.5
1327.0
Z.ai: GLM 5.1
1321.0
Kimi K2.6
1320.0
Step 3.7 Flash
1210.0
Design Arena: dataviz vs top 8 models
Z.ai: GLM 5.1
1366.0
Claude Fable 5
1363.0
xAI: Grok 4.5
1330.0
Anthropic: Claude Opus 4.6
1322.0
Anthropic: Claude Opus 4.7
1322.0
Anthropic: Claude Sonnet 4.6
1316.0
Z.ai: GLM 5.2
1316.0
Step 3.7 Flash
1203.0
Design Arena: gamedev vs top 8 models
Claude Fable 5
1383.0
Z.ai: GLM 5.2
1353.0
Claude Sonnet 5
1345.0
GPT-5.5
1344.0
Anthropic: Claude Opus 4.6
1339.0
Anthropic: Claude Opus 4.7
1336.0
MiMo-V2.5-Pro
1334.0
Step 3.7 Flash
1203.0
Design Arena: svg vs top 8 models
Claude Fable 5
1365.0
Gemini 3.1 Pro Preview
1340.0
Gemini 3.5 Flash
1297.0
Anthropic: Claude Opus 4.6
1278.0
GPT-5.5
1277.0
Anthropic: Claude Opus 4.7
1274.0
Z.ai: GLM 5.1
1273.0
Step 3.7 Flash
1120.0
Design Arena: uicomponent vs top 8 models
Claude Fable 5
1401.0
Anthropic: Claude Opus 4.7
1359.0
Anthropic: Claude Opus 4.6
1343.0
Z.ai: GLM 5.2
1335.0
Z.ai: GLM 5.1
1331.0
Qwen: Qwen3.7 Max
1330.0
Anthropic: Claude Sonnet 4.6
1320.0
Step 3.7 Flash
1208.0
Design Arena: website vs top 8 models
Z.ai: GLM 5.2
1346.0
Claude Fable 5
1338.0
Anthropic: Claude Opus 4.6
1331.0
Anthropic: Claude Opus 4.7
1329.0
xAI: Grok 4.5
1325.0
Anthropic: Claude Sonnet 4.6
1320.0
Claude Sonnet 5
1314.0
Step 3.7 Flash
1218.0
GDPval vs top 6 models
GPT-5.5
84.9
GPT-5.4
83.0
GPT-5.5 Pro
82.3
GPT-5.4 Pro
82.0
Nemotron 3 Ultra 550B A55B
46.7
Step 3.7 Flash
45.8
Humanity's Last Exam vs top 8 models
Claude Fable 5
64.5
Muse Spark 1.1
62.1
GPT-5.4 Pro
58.7
Claude Opus 4.8
57.9
GPT-5.5 Pro
57.2
Claude Opus 4.7
54.7
GPT-5.5
52.2
Step 3.7 Flash
47.2
Intelligence Index vs top 8 models
Claude Fable 5
59.9
GPT-5.6 Sol
58.9
Anthropic: Claude Opus 4.8
55.7
GPT-5.6 Terra
55.0
GPT-5.5
54.8
xAI: Grok 4.5
53.8
Anthropic: Claude Opus 4.7
53.5
Step 3.7 Flash
30.3
SWE-Bench Pro vs top 8 models
Claude Fable 5
80.3
Claude Opus 4.8
69.2
Grok 4.5
64.7
GPT-5.6 Sol
64.6
Claude Opus 4.7
64.3
GPT-5.6 Terra
63.4
Claude Sonnet 5
63.2
Step 3.7 Flash
56.3
SWE-Bench Verified vs top 8 models
Claude Fable 5
95.0
Claude Opus 4.8
88.6
Claude Sonnet 5
85.2
Ornith 1.0 397B
82.4
DeepSeek V4 Pro
80.6
Qwen3.7 Max
80.4
Kimi K2.6
80.2
Step 3.7 Flash
76.5
SciCode vs top 7 models
Fugu
60.1
Fugu Ultra
58.7
Qwen3.7 Max
53.5
Gemini 2.5 Pro
42.8
GPT-5-Codex
40.9
Step 3.5 Flash
40.4
Step 3.7 Flash
40.0
Terminal-Bench vs top 8 models
GPT-5.6 Sol
88.8
Claude Fable 5
88.0
GPT-5.6 Terra
87.4
GPT-5.6 Luna
84.7
Grok 4.5
83.3
GPT-5.5
82.7
Muse Spark 1.1
80.0
Step 3.7 Flash
59.6
Terminal-Bench Hard vs top 7 models
GPT-5-Codex
37.9
Step 3.7 Flash
35.6
Step 3.5 Flash 2603
32.6
Step 3.5 Flash
27.3
Gemini 2.5 Pro
26.5
GLM-4.6
25.0
GLM-4.5
22.0
Toolathlon vs top 6 models
GPT-5.6 Sol
58.0
Gemini 3.5 Flash
56.5
GPT-5.5
55.6
GPT-5.6 Luna
53.4
GPT-5.6 Terra
53.1
Step 3.7 Flash
49.5