GitHub[208K]Try OpenCode

CompareAI models

  1. GPT-6 Astra (Fast)OpenAI
  2. Step 5 PreviewStepFun
ReasoningCodingCost efficiencyContext windowMultimodalTool use
Normalized model capability scores
ModelReasoningCodingCost efficiencyContext windowMultimodalTool use
GPT-6 Astra (Fast)100/100No data1/10098/10050/100No data
Step 5 Preview100/100No data43/10081/10050/100No data
Overview
Author
Context length
1.1M
1M
Reasoning
True
True
Input modalities
Text, Image, Pdf
Text, Image, Video
Output modalities
Text
Text
Providers
Pricing
Input
$20/ 1M
$1.00/ 1M
Output
$100/ 1M
$2.70/ 1M
Cached input
$2.00/ 1M
$0.05/ 1M
MomentumLast 2 mo
Unique users
No usage
No usage
Completed sessions
No usage
No usage
Token share
No usage
No usage
Tokens
No usage
No usage
No trend data
No trend data
RetentionWeek 1
Returning users
Pending
Pending

Related comparisons. Other model pairs to check.