GPT-5.2 vs Step 2.5 Flash
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
GPT-5.2 by OpenAI wins on 3 of 3 benchmarks against Step 2.5 Flash by StepFun, which leads on 0. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from the AI Value Index.
Category-by-Category Breakdown
Context: In context, GPT-5.2 scores 400K on Context Length compared to Step 2.5 Flash's 128K.
Speed Comparison
GPT-5.2 generates output at 90 tok/s compared to Step 2.5 Flash's 67 tok/s, and the time to first token is 380 ms for GPT-5.2 versus 980 ms for Step 2.5 Flash. GPT-5.2 delivers faster throughput.
Verdict
GPT-5.2 leads across the board in speed, making it the stronger overall choice in this comparison.
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GPT-5.2 vs Step 2.5 Flash — FAQ
Which is better, GPT-5.2 or Step 2.5 Flash?
GPT-5.2 wins on more benchmarks overall (3 vs 0). However, the best choice depends on your specific needs — each model excels in different areas.
How does GPT-5.2 compare to Step 2.5 Flash for coding?
SWE-bench Verified data is not available for both models. Check the detailed comparison charts above for other coding-related metrics.
Is GPT-5.2 cheaper than Step 2.5 Flash?
Complete pricing data is not available for both models. Check the pricing section of the comparison above for available cost information.
Which is faster, GPT-5.2 or Step 2.5 Flash?
GPT-5.2 is faster, generating output at 90 tok/s compared to 67 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the GPT-5.2 vs Step 2.5 Flash comparison cover?
This comparison covers 3 benchmarks including Output Speed, Time to First Token, Context Length. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.