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MiMo-V2.6-Flash vs Step-3.5-Flash

MiMo-V2.6-Flash leads the LLM Stats Score 45.6 to 37.2. MiMo-V2.6-Flash and Step-3.5-Flash cost the same.

Xiaomi · StepFun · Updated for 2026

Which is better?

MiMo-V2.6-Flash leads the overall LLM Stats Score 45.6 to 37.2, ranking #29 overall.

MiMo-V2.6-Flash also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose MiMo-V2.6-Flash

  • overall performance matters — it scores 45.6 and ranks #29 on LLM Stats
  • your work emphasizes coding and agents — it leads those capability indexes
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Sep 2026

Choose Step-3.5-Flash

  • you want predictable pricing at $0.10/M input and $0.40/M output

At a glance

The differences that matter most.

MiMo-V2.6-Flash
Xiaomi
Step-3.5-Flash
StepFun
Core performance indexes
LLM Stats Score
45.6
#29
37.2
#72
Reasoning
42.5
#45
37.2
#71
Coding
36.7
#21
20.5
#99
Agents
33.1
#26
15.3
#88
Cost, coverage & limits
Benchmark wins
—
—
Input price
$0.14 / M
$0.10 / M
Output price
$0.28 / M
$0.40 / M
Context window
1,048,576
65,536

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
MiMo-V2.6-Flash
Step-3.5-Flash
Tool use
24.7#29
13.3#98
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

16 reported for MiMo-V2.6-Flash · 7 for Step-3.5-Flash

No common benchmarks found

MiMo-V2.6-Flash and Step-3.5-Flashdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

For input processing, MiMo-V2.6-Flash ($0.14/1M tokens) is 1.4x more expensive than Step-3.5-Flash ($0.10/1M tokens).

For output processing, MiMo-V2.6-Flash ($0.28/1M tokens) is 1.4x cheaper than Step-3.5-Flash ($0.40/1M tokens).

In conclusion, MiMo-V2.6-Flash and Step-3.5-Flash cost the same.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Tue Sep 22 2026 • llm-stats.com
Xiaomi
MiMo-V2.6-Flash
Input tokens$0.14
Output tokens$0.28
Best providerXiaomi
StepFun
Step-3.5-Flash
Input tokens$0.10
Output tokens$0.40
Best providerStepFun
Notice missing or incorrect data?Start an Issue→

Model Size

Parameter count comparison

113.0B diff

MiMo-V2.6-Flash has 113.0B more parameters than Step-3.5-Flash, making it 57.7% larger.

Xiaomi
MiMo-V2.6-Flash
309.0Bparameters
StepFun
Step-3.5-Flash
196.0Bparameters
309.0B
MiMo-V2.6-Flash
196.0B
Step-3.5-Flash

Context Window

Maximum input and output token capacity

MiMo-V2.6-Flash accepts 1,048,576 input tokens compared to Step-3.5-Flash's 65,536 tokens. Only Step-3.5-Flash specifies output context (8,192 tokens).

Xiaomi
MiMo-V2.6-Flash
Input1,048,576 tokens
Output- tokens
StepFun
Step-3.5-Flash
Input65,536 tokens
Output8,192 tokens
Tue Sep 22 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

MiMo-V2.6-Flash supports multimodal inputs, whereas Step-3.5-Flash does not.

MiMo-V2.6-Flash can handle both text and other forms of data like images, making it suitable for multimodal applications.

MiMo-V2.6-Flash

Text
Images
Audio
Video

Step-3.5-Flash

Text
Images
Audio
Video

License

Usage and distribution terms

MiMo-V2.6-Flash is licensed under MIT, while Step-3.5-Flash uses Apache 2.0.

License differences may affect how you can use these models in commercial or open-source projects.

MiMo-V2.6-Flash

MIT

Open weights

Step-3.5-Flash

Apache 2.0

Open weights

Release Timeline

When each model was launched

MiMo-V2.6-Flash was released on 2026-09-22, while Step-3.5-Flash was released on 2026-02-02.

MiMo-V2.6-Flash is 8 months newer than Step-3.5-Flash.

MiMo-V2.6-Flash

Sep 22, 2026

0 days ago

7mo newer
Step-3.5-Flash

Feb 2, 2026

7 months ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

MiMo-V2.6-Flash is available from Xiaomi. Step-3.5-Flash is available from StepFun.

MiMo-V2.6-Flash

xiaomi logo
Xiaomi
Input Price:Input: $0.14/1MOutput Price:Output: $0.28/1M

Step-3.5-Flash

stepfun logo
StepFun
Input Price:Input: $0.10/1MOutput Price:Output: $0.40/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against MiMo-V2.6-Flash and Step-3.5-Flash side-by-side, then vote on the output you prefer.

MiMo-V2.6-Flash
✓ Preferred
Step-3.5-Flash
Open in Playground

FAQ

Common questions about MiMo-V2.6-Flash vs Step-3.5-Flash.

Which is better, MiMo-V2.6-Flash or Step-3.5-Flash?

MiMo-V2.6-Flash leads the LLM Stats Score 45.6 to 37.2. MiMo-V2.6-Flash is made by Xiaomi and Step-3.5-Flash is made by StepFun. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does MiMo-V2.6-Flash compare to Step-3.5-Flash in benchmarks?

MiMo-V2.6-Flash scores CyberGym: 95.1%, Terminal-Bench 2.1: 87.6%, OSWorld-Verified: 80.8%, MiMo Cyber Bench: 77.2%, Toolathlon-Verified: 73.6%. Step-3.5-Flash scores AIME 2025: 97.3%, Tau-bench: 88.2%, LiveCodeBench v6: 86.4%, IMO-AnswerBench: 85.4%, SWE-Bench Verified: 74.4%.

Is MiMo-V2.6-Flash cheaper than Step-3.5-Flash?

Step-3.5-Flash is 1.4x cheaper for input tokens. MiMo-V2.6-Flash costs $0.14/M input and $0.28/M output via xiaomi. Step-3.5-Flash costs $0.10/M input and $0.40/M output via stepfun.

What are the context window sizes for MiMo-V2.6-Flash and Step-3.5-Flash?

MiMo-V2.6-Flash supports 1.0M tokens and Step-3.5-Flash supports 66K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between MiMo-V2.6-Flash and Step-3.5-Flash?

Key differences include LLM Stats Score (45.6 vs 37.2), context window (1.0M vs 66K), input pricing ($0.14 vs $0.10/M), multimodal support (yes vs no), licensing (MIT vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes MiMo-V2.6-Flash and Step-3.5-Flash?

MiMo-V2.6-Flash is developed by Xiaomi and Step-3.5-Flash is developed by StepFun.

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