Compare GPT 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.
GPT 4o
Step 3.7 FlashThe stable multimodal model from OpenAI, with the official designated version being gpt-4o-2024-08-06; our site supports the official automatic caching, and charges for hits on some parts will be automatically halved.
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.
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
Promotional prices show the discounted rate; see each model page for promotion windows.
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Estimate your monthly bill for the same workload on each model.
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Step 3.7 Flash: $1.32/M output tokens; GPT 4o: $10/M. Use the cost calculator above to estimate your own workload.
GPT 4o accepts 128,000 and Step 3.7 Flash accepts 256,000 input tokens.
GPT 4o accepts text, image and PDF input and supports tool calling, function calling and structured outputs; Step 3.7 Flash accepts text, image and video input.
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