GPT 5
OpenAI · text, image → text
GPT-5 is OpenAI flagship model for coding, reasoning, and agentic tasks across domains.
Input$1.25 /M
Output$10 /M
Cache read$0.125 /M
← ModelsGPT 5
Step 3.7 Flash
GPT 5 vs Step 3.7 Flash
Compare GPT 5 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.
GPT 5Step 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.
GPT 5
Step 3.7 Flash
Input /M
$1.25
$0.22
Output /M
$10
$1.32
Cache read /M
$0.125
$0.044
Context length
400,000
256,000
Max output
128,000
0
Time to First Token
5.3 s
-
Throughput
68.2 tok/s
-
Modalities
textimage
textimagevideo
Supported Parameters
thinkingtoolsfunction callingstructured outputs
API Formats
Released
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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.
gpt-5step-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.
gpt-5step-3.7-flash
Throughput (tok/s)
-
TTFT (s)
-
Uptime (%)
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Cost calculator
Estimate your monthly bill for the same workload on each model.
Step 3.7 Flash
$33.00 /mo
GPT 5
$225 /mo
Monthly = daily × 30. Discounted rates applied where a promotion is active.
FAQ
Which is cheaper: GPT 5, Step 3.7 Flash?
Step 3.7 Flash: $1.32/M output tokens; GPT 5: $10/M. Use the cost calculator above to estimate your own workload.
How large is each context window?
GPT 5 accepts 400,000 and Step 3.7 Flash accepts 256,000 input tokens.
What inputs and capabilities does each model support?
GPT 5 accepts text and image input and supports thinking, tool calling, function calling and structured outputs; Step 3.7 Flash accepts text, image and video input.
Can I call GPT 5 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.
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