AI model comparison
Step 5 Preview vs MiMo-V2.6-Flash
Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.
StepFun
Step 5 Preview
Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters).
- Input / 1M
- $1
- Output / 1M
- $2.70
- Context
- 1M
Xiaomi
MiMo-V2.6-Flash
MiMo-V2.6-Flash is an open-source foundation model developed by Xiaomi.
- Input / 1M
- $0.14
- Output / 1M
- $0.28
- Context
- 1.05M
At a glance
Quick verdict
How the two models stack up on the things people ask about most.
Lower price
MiMo-V2.6-Flash
8.0x cheaper for a typical chat
Higher intelligence score
Tie
Not enough benchmark data
Larger context window
MiMo-V2.6-Flash
1.05M vs 1M tokens
Newer release
Step 5 Preview
Released October 8, 2026
Benchmarks
Benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
Coding index
Agentic index
Pricing
Step 5 Preview vs MiMo-V2.6-Flash API pricing
Per-token API rates. Cheaper option highlighted.
| Metric | ||
|---|---|---|
| Input tokensPer 1M tokens | $1 | $0.14 |
| Output tokensPer 1M tokens | $2.70 | $0.28 |
| Cached input (read)Per 1M tokens | $0.05 | $0.00 |
| Cache writePer 1M tokens | Not available | Not available |
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
Coding task
30K in, 4K out
Long document summary
150K in, 2K out
Specs
Context window and capabilities
How much each model can read, how much it can write, and what it accepts as input.
| Metric | ||
|---|---|---|
| Context window | 1M tokens | 1.05M tokens |
| Max output | 64K tokens | 131K tokens |
| Input types | Image, Text, Video | Audio, Image, Text, Video |
| Output types | Text | Text |
| Reasoning effort levels | High, Medium, Low | Not available |
| Default reasoning effort | Medium | Not available |
| Release date | October 8, 2026 | September 21, 2026 |
Features
Supported features
API features available for each model.
| Metric | ||
|---|---|---|
| Tool calling | Supported | Supported |
| Structured outputs | Supported | Supported |
| JSON mode | Supported | Supported |
| Reasoning | Supported | Supported |
| Temperature | Supported | Supported |
| Stop sequences | Supported | Supported |
| Deterministic seed | Not supported | Supported |
| Verbosity control | Not supported | Not supported |
Keep exploring
More on these models
Other head-to-heads, the full model page, and the alternatives list for each model.
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- MiMo-V2.6-Flash vs Muse Spark 1.3 Contributor
- MiMo-V2.6-Flash vs Claude Sonnet 5.5
- MiMo-V2.6-Flash vs MiMo-V2.6-Pro
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- MiMo-V2.6-Flash vs GPT-6 Astra
- MiMo-V2.6-Flash vs Claude Opus 5
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- MiMo-V2.6-Flash vs Claude Fable 5.1
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- MiMo-V2.6-Flash vs Solar Pro 4
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- MiMo-V2.6-Flash vs Qwen3.8 Flash
- MiMo-V2.6-Flash vs Qwen3.7 Flash
- MiMo-V2.6-Flash vs Mistral Nemo
- MiMo-V2.6-Flash vs DeepSeek V4 Flash Vision Exp
Our take
MiMo-V2.6-Flash is 8.0x cheaper for a typical chat. MiMo-V2.6-Flash has the larger context window (1.05M vs 1M 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 5 Preview or MiMo-V2.6-Flash cheaper?
MiMo-V2.6-Flash is cheaper for a typical chat (2K input tokens and 500 output tokens). MiMo-V2.6-Flash costs $0.14 per 1M input tokens and $0.28 per 1M output tokens, while Step 5 Preview costs $1 per 1M input tokens and $2.70 per 1M output tokens.
Which has a bigger context window, Step 5 Preview or MiMo-V2.6-Flash?
MiMo-V2.6-Flash supports up to 1.05M tokens of context, compared with 1M for Step 5 Preview.
Can I use Step 5 Preview and MiMo-V2.6-Flash at the same time?
Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Step 5 Preview and MiMo-V2.6-Flash answer side by side and keep the better response.
Why choose? Ask both.
Send one prompt to Step 5 Preview and MiMo-V2.6-Flash at the same time. Compare the answers side by side and keep the best one.