O1
OpenAI · text → text
OpenAI's most powerful O-series model supports official cache hits that halve the input cost.
Input$15 /M
Output$60 /M
Cache read$7.5 /M
← ModelsO1
Step 3.7 Flash
O1 vs Step 3.7 Flash
Compare O1 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.
O1Step 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.
O1
Step 3.7 Flash
Input /M
$15
$0.22
Output /M
$60
$1.32
Cache read /M
$7.5
$0.044
Context length
200
256,000
Max output
0
0
Time to First Token
59.9 s
1.4 s
Throughput
103.5 tok/s
32.6 tok/s
Modalities
text
textimagevideo
Supported Parameters
thinking
API Formats
Released
December 5, 2024
May 29, 2026
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.
o1step-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.
o1step-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
O1
$1,800 /mo
Monthly = daily × 30. Discounted rates applied where a promotion is active.
FAQ
Which is cheaper: O1, Step 3.7 Flash?
Step 3.7 Flash: $1.32/M output tokens; O1: $60/M. Use the cost calculator above to estimate your own workload.
Which responds faster?
Step 3.7 Flash: 1.4s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
How large is each context window?
O1 accepts 200 and Step 3.7 Flash accepts 256,000 input tokens.
Which one generates tokens faster?
O1 at 103.5 tok/s and Step 3.7 Flash at 32.6 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
What inputs and capabilities does each model support?
O1 accepts text input and supports thinking; Step 3.7 Flash accepts text, image and video input.
Can I call O1 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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