StepFun
Step-5
StepFun Step-5: flagship reasoning model with 512K context and strong math/agentic results.
Intelligence
63.0 #278
Top 38% tier
Output Speed
110 t/s
TTFT 320 ms · ITL 9.1 ms/tok
Blended price (3:1)
$2.5 /1M
In $1.5/M · Out $6/M
Context
512K
≈ 1,280 A4 pages · max out 32,768
Quality Domain Radar
6-Axis Frontier Evaluation vs Category Average & Flagship
Step-5
Claude Mythos Preview (#1)
Average (68)
Radar axes are approximated from category scores where direct benchmark measurements are missing — see Methodology.
API deployment
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Throughput, TTFT and cache pricing across Groq, Cerebras, Together, DeepInfra, Fireworks, Bedrock and Azure.
GroqCerebrasTogether AIDeepInfraFireworks AIAWS BedrockAzure AI
Groq
Cerebras
Together AI
DeepInfra
Fireworks AI
AWS Bedrock
Azure AIScores by Source
Category Scores
Benchmark Results
Model Details
Release date
Aug 28, 2026
Parameters
Not disclosed
License
Proprietary
Context Window
512,000 tokens
Input Price
$1.5/M
Output Price
$6/M
Output Speed
110 t/s
Time to First Token
320 ms
Estimated monthly bill
Estimated monthly spend
$0.00
Calculating savings vs GPT-4o...
Cite & embed
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@misc{llmpodium2026step5,
title = {Benchmark Analysis and Intelligence Evaluation of Step-5},
author = {LLMPodium Research},
year = {2026},
url = {https://llmpodium.com/models/step-5}
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