Step 3.7 Flash Thinking is StepFun's high-efficiency multimodal MoE model with visible reasoning enabled for deeper agentic coding, long-context reasoning, tool use, and native image/video understanding. ⚠️ Note: This model routes through StepFun, so privacy and logging guarantees may be limited.
Added May 29, 2026
Model weightsContext Window
262.1K
Max Output
256.0K
Avg output tokens (7d)
5.0K tokens
Input Price (Auto)
$0.20/1M
Output Price (Auto)
$1.15/1M
Cache Read (Auto)
$0.040/1M
Capabilities
Benchmarks
Benchmarks
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
30.9
Coding Index
39.6
Agentic Index
21.7
Reasoning
GPQA Diamond
Graduate-level scientific reasoning
80.9%
Better than 71% of models compared
HLE
Humanity's Last Exam
21.4%
Better than 76% of models compared
IFBench
Instruction-following benchmark
67.3%
Better than 80% of models compared
T²-Bench Telecom
Conversational AI agents in dual-control scenarios
98.5%
Better than 98% of models compared
AA-LCR
Long context reasoning evaluation
69.7%
Better than 79% of models compared
GDPval-AA
Economically valuable tasks
26.0%
CritPt
Research-level physics reasoning
2.3%
Coding
SciCode
Python programming for scientific computing
40.0%
Better than 71% of models compared
Terminal-Bench Hard
Agentic coding and terminal use
35.6%
Better than 81% of models compared
Knowledge
AA-Omniscience Accuracy
Proportion of correctly answered questions
25.8%
AA-Omniscience Hallucination Rate
Rate of incorrect answers among non-correct responses
85.0%
Last updated Aug 25, 2026, 12:00 AM
Artificial AnalysisProviders
Auto routing is available for this model. Explicit provider selection is not available.
Loading provider options…
Related text models
Compare Step 3.7 Flash Thinking with similar models from the same provider or model family.
Step 3.5 Flash 2603
stepfun-ai/step-3.5-flash-2603Step 3.5 Flash 2603 is optimized for high-frequency agentic and coding workflows with improved token efficiency and faster reasoning. NOTE: This model runs via StepFun, which may log and train on your prompts.
Step 3.5 Flash
stepfun-ai/step-3.5-flashStepFun's most capable open-source reasoning model with visible reasoning traces. Built on a sparse Mixture-of-Experts architecture with 196B total parameters and only 11B active per token, it achieves frontier-level performance in math, logic, and agentic coding while reaching up to 350 tokens/sec. Supports 256K context. NOTE: This model runs via StepFun, which may log and train on your prompts.
Step R1 V Mini
step-r1-v-miniStep-R1-V-Mini, which supports image and text input, text output, has good instruction following and general capabilities, can perceive images with high precision and complete complex reasoning tasks.
GLM 5.3 Flash TEE
TEE/glm-5.3-flashGLM-5.3 Flash is Z.AI's natively multimodal 320B MoE reasoning model with 18B active parameters, served by Phala inside a Trusted Execution Environment with Redpill attestation and signed completion receipts.
GLM 5.3 Flash Uncensored
z-ai/glm-5.3-flash-uncensoredGLM 5.3 Flash Uncensored is an uncensored fine-tune of the efficient 320B mixture-of-experts reasoning model, built for unrestricted chat, creative writing, coding, agentic work, tool use, and long-context tasks.
Qwen3.8 Flash
alibaba/qwen3.8-flashQwen3.8 Flash is Alibaba's latest fast multimodal model, with a million-token context window for coding, agentic workflows, visual understanding, long documents, codebases, and videos.