AI model comparison
Step 3.7 Flash vs GPT-5 Mini
Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.
StepFun
Step 3.7 Flash
Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model.
- Input / 1M
- $0.20
- Output / 1M
- $1.15
- Context
- 262K
OpenAI
GPT-5 Mini
GPT-5 Mini is a compact version of GPT-5, designed to handle lighter-weight reasoning tasks.
- Input / 1M
- $0.25
- Output / 1M
- $2
- Context
- 400K
At a glance
Quick verdict
How the two models stack up on the things people ask about most.
Lower price
Step 3.7 Flash
1.5x cheaper for a typical chat
Higher intelligence score
GPT-5 Mini
20.6 vs 19.5 on Artificial Analysis
Larger context window
GPT-5 Mini
400K vs 262K tokens
Newer release
Step 3.7 Flash
Released May 28, 2026
Benchmarks
Benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
GPT-5 Mini20.6Coding index
GPT-5 MiniNot availableAgentic index
GPT-5 MiniNot availablePricing
Step 3.7 Flash vs GPT-5 Mini API pricing
Per-token API rates. Cheaper option highlighted.
| Metric | GPT-5 Mini | |
|---|---|---|
| Input tokensPer 1M tokens | $0.20 | $0.25 |
| Output tokensPer 1M tokens | $1.15 | $2 |
| Cached input (read)Per 1M tokens | $0.04 | $0.03 |
| Cache writePer 1M tokens | Not available | Not available |
| Web searchPer request | Not available | $0.01 |
What it costs in practice
Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.
Chat message
2K in, 500 out
GPT-5 Mini$1.50Coding task
30K in, 4K out
GPT-5 Mini$15.50$8.75 cachedLong document summary
150K in, 2K out
GPT-5 Mini$41.50$7.75 cachedSpecs
Context window and capabilities
How much each model can read, how much it can write, and what it accepts as input.
| Metric | GPT-5 Mini | |
|---|---|---|
| Context window | 262K tokens | 400K tokens |
| Max output | 230K tokens | 128K tokens |
| Input types | Image, Text, Video | File, Image, Text |
| Output types | Text | Text |
| Reasoning effort levels | High, Medium, Low | High, Medium, Low, Minimal |
| Default reasoning effort | Medium | Medium |
| Release date | May 28, 2026 | August 7, 2025 |
Features
Supported features
API features available for each model.
| Metric | GPT-5 Mini | |
|---|---|---|
| Tool calling | Supported | Supported |
| Structured outputs | Supported | Supported |
| JSON mode | Supported | Supported |
| Reasoning | Supported | Supported |
| Temperature | Supported | Not supported |
| Stop sequences | Supported | Not supported |
| Deterministic seed | Supported | Supported |
| Verbosity control | Not supported | Supported |
Keep exploring
More on these models
Other head-to-heads, the full model page, and the alternatives list for each model.
- Step 3.7 Flash vs DeepSeek V4 Flash 0423
- Step 3.7 Flash vs Step 5 Preview
- Step 3.7 Flash vs DeepSeek V3.2
- Step 3.7 Flash vs Ling 3.0 Flash
- Step 3.7 Flash vs GPT-5.4 Nano
- Step 3.7 Flash vs Qwen3.6 35B A3B
- Step 3.7 Flash vs MiniMax M2.5
- Step 3.7 Flash vs Muse Glimmer 30B
- Step 3.7 Flash vs MiniMax M2.1
- Step 3.7 Flash vs GPT-5.1-Codex-Mini
- Step 3.7 Flash vs Qwen3.5-35B-A3B
- Step 3.7 Flash vs LongCat 2.0
- Step 3.7 Flash vs MiniMax M2
- Step 3.7 Flash vs GLM 4.6
- Step 3.7 Flash vs Step 3.5 Flash
GPT-5 MiniView full model details- GPT-5 Mini vs DeepSeek V4 Flash 0423
- GPT-5 Mini vs Gemini 3.5 Flash Lite
- GPT-5 Mini vs GPT-5.4 Mini
- GPT-5 Mini vs GPT-5.4 Nano
- GPT-5 Mini vs GPT-5.1-Codex
- GPT-5 Mini vs GPT-5
- GPT-5 Mini vs Nemotron 3 Ultra
- GPT-5 Mini vs GLM 4.7
- GPT-5 Mini vs Kimi K2 Thinking
- GPT-5 Mini vs o3 Pro
- GPT-5 Mini vs Qwen3.5 397B A17B
- GPT-5 Mini vs Qwen3.6 27B
- GPT-5 Mini vs MiniMax M2.1
- GPT-5 Mini vs GPT-5.1-Codex-Mini
- GPT-5 Mini vs o3
- GPT-5 Mini vs LongCat 2.0
- GPT-5 Mini vs GLM 4.6
- GPT-5 Mini vs Qwen3.5-122B-A10B
- GPT-5 Mini vs o4 Mini
Our take
Step 3.7 Flash is 1.5x cheaper for a typical chat. GPT-5 Mini scores higher on the Artificial Analysis Intelligence Index (20.6 vs 19.5). GPT-5 Mini has the larger context window (400K vs 262K tokens). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.
FAQ
Frequently asked questions
Is Step 3.7 Flash or GPT-5 Mini cheaper?
Step 3.7 Flash is cheaper for a typical chat (2K input tokens and 500 output tokens). Step 3.7 Flash costs $0.20 per 1M input tokens and $1.15 per 1M output tokens, while GPT-5 Mini costs $0.25 per 1M input tokens and $2 per 1M output tokens.
Which has a bigger context window, Step 3.7 Flash or GPT-5 Mini?
GPT-5 Mini supports up to 400K tokens of context, compared with 262K for Step 3.7 Flash.
Is Step 3.7 Flash smarter than GPT-5 Mini?
On the Artificial Analysis Intelligence Index, Step 3.7 Flash scores 19.5 and GPT-5 Mini scores 20.6, putting GPT-5 Mini ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.
Can I use Step 3.7 Flash and GPT-5 Mini at the same time?
Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Step 3.7 Flash and GPT-5 Mini answer side by side and keep the better response.
Why choose? Ask both.
Send one prompt to Step 3.7 Flash and GPT-5 Mini at the same time. Compare the answers side by side and keep the best one.