Chatgpt 4o
OpenAI · text, image → text
This model will point to the latest GPT-4o model used by ChatGPT.
Input$5 /M
Output$15 /M
← ModelsChatgpt 4o
Step 3.7 Flash
Chatgpt 4o vs Step 3.7 Flash
Compare Chatgpt 4o from OpenAI and Step 3.7 Flash from StepFun on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.
Chatgpt 4oStep 3.7 Flash+ Add model · 2/4
Step 3.7 Flash
StepFun · text, image, video → text
step-3.7-flash is stepfun's flagship inference model, designed for high-complexity tasks that require deep reasoning and fast execution. It excels at decomposing multi-step problems, performing tool calls, and maintaining consistency across massive datasets. It is the preferred choice for complex workloads such as long-context agents, advanced software engineering, and end-to-end research automation.
Input$0.22 /M
Output$1.32 /M
Cache read$0.044 /M
Pricing & Specifications
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
Chatgpt 4o
Step 3.7 Flash
Input /M
$5
$0.22
Output /M
$15
$1.32
Cache read /M
-
$0.044
Context length
0
256,000
Max output
0
0
Time to First Token
-
-
Throughput
-
-
Modalities
textimage
textimagevideo
Supported Parameters
API Formats
Released
-
-
Promotional prices show the discounted rate; see each model page for promotion windows.
Activity Past 30 Days
Daily traffic served through AIHubMix — how demand for each model is trending.
chatgpt-4o-lateststep-3.7-flash
Tokens / day
-
Requests / day
-
Performance Past 3 Days
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
chatgpt-4o-lateststep-3.7-flash
Throughput (tok/s)
-
TTFT (s)
-
Uptime (%)
-
Cost calculator
Estimate your monthly bill for the same workload on each model.
Step 3.7 Flash
$33.00 /mo
Chatgpt 4o
$525 /mo
Monthly = daily × 30. Discounted rates applied where a promotion is active.
FAQ
Which is cheaper: Chatgpt 4o, Step 3.7 Flash?
Step 3.7 Flash: $1.32/M output tokens; Chatgpt 4o: $15/M. Use the cost calculator above to estimate your own workload.
What inputs and capabilities does each model support?
Chatgpt 4o accepts text and image input; Step 3.7 Flash accepts text, image and video input.
Can I call Chatgpt 4o and Step 3.7 Flash with the same API key?
Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.
Popular comparisons
Related model match-ups readers also look at.
