Model Comparison

GPT-5.5 Instant vs MiMo-V2-ProWhich is better in 2026?

Comparing GPT-5.5 Instant and MiMo-V2-Pro across benchmarks, pricing, and capabilities.

Verdict: GPT-5.5 Instant vs MiMo-V2-Pro — which is better?

GPT-5.5 Instant (by OpenAI) and MiMo-V2-Pro (by Xiaomi) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

On price, MiMo-V2-Pro is roughly 7.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

MiMo-V2-Pro also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose GPT-5.5 Instant if…

  • you want the most recent training data — it shipped May 2026

Choose MiMo-V2-Pro if…

  • cost matters — it's about 7.5x cheaper per token
  • you process long inputs — it offers a 1,000,000 token context window

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

GPT-5.5 Instant and MiMo-V2-Prodon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

MiMo-V2-Pro costs less

For input processing, GPT-5.5 Instant ($5.00/1M tokens) is 5.0x more expensive than MiMo-V2-Pro ($1.00/1M tokens).

For output processing, GPT-5.5 Instant ($30.00/1M tokens) is 10.0x more expensive than MiMo-V2-Pro ($3.00/1M tokens).

In conclusion, GPT-5.5 Instant is more expensive than MiMo-V2-Pro.*

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

Lowest available price from all providers
Fri Jul 17 2026 • llm-stats.com
OpenAI
GPT-5.5 Instant
Input tokens$5.00
Output tokens$30.00
Best providerOpenAI
Xiaomi
MiMo-V2-Pro
Input tokens$1.00
Output tokens$3.00
Best providerXiaomi
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

MiMo-V2-Pro accepts 1,000,000 input tokens compared to GPT-5.5 Instant's 400,000 tokens. GPT-5.5 Instant can generate longer responses up to 128,000 tokens, while MiMo-V2-Pro is limited to 16,384 tokens.

OpenAI
GPT-5.5 Instant
Input400,000 tokens
Output128,000 tokens
Xiaomi
MiMo-V2-Pro
Input1,000,000 tokens
Output16,384 tokens
Fri Jul 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-5.5 Instant supports multimodal inputs, whereas MiMo-V2-Pro does not.

GPT-5.5 Instant can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT-5.5 Instant

Text
Images
Audio
Video

MiMo-V2-Pro

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

GPT-5.5 Instant

Proprietary

Closed source

MiMo-V2-Pro

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-5.5 Instant was released on 2026-05-05, while MiMo-V2-Pro was released on 2026-03-18.

GPT-5.5 Instant is 2 months newer than MiMo-V2-Pro.

GPT-5.5 Instant

May 5, 2026

2 months ago

1mo newer
MiMo-V2-Pro

Mar 18, 2026

4 months ago

Knowledge Cutoff

When training data ends

GPT-5.5 Instant has a documented knowledge cutoff of 2025-08-31, while MiMo-V2-Pro's cutoff date is not specified.

We can confirm GPT-5.5 Instant's training data extends to 2025-08-31, but cannot make a direct comparison without MiMo-V2-Pro's cutoff date.

GPT-5.5 Instant

Aug 2025

MiMo-V2-Pro

—

Provider Availability

GPT-5.5 Instant is available from OpenAI. MiMo-V2-Pro is available from Xiaomi.

GPT-5.5 Instant

openai logo
OpenAI
Input Price:Input: $5.00/1MOutput Price:Output: $30.00/1M

MiMo-V2-Pro

xiaomi logo
Xiaomi
Input Price:Input: $1.00/1MOutput Price:Output: $3.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Supports multimodal inputs
Xiaomi
Larger context window (1,000,000 tokens)
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against GPT-5.5 Instant and MiMo-V2-Pro side-by-side, then vote on the output you prefer.

GPT-5.5 Instant
✓ Preferred
MiMo-V2-Pro
Open in Playground
AI Model Comparison Table
Feature
OpenAI
GPT-5.5 Instant
Xiaomi
MiMo-V2-Pro

FAQ

Common questions about GPT-5.5 Instant vs MiMo-V2-Pro.

Which is better, GPT-5.5 Instant or MiMo-V2-Pro?

GPT-5.5 Instant (OpenAI) and MiMo-V2-Pro (Xiaomi) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does GPT-5.5 Instant compare to MiMo-V2-Pro in benchmarks?

GPT-5.5 Instant scores HealthBench Consensus: 94.7%, OmniDocBench 1.5: 87.5%, GPQA: 85.6%, CharXiv-R: 81.6%, AIME 2025: 81.2%. MiMo-V2-Pro scores Tau2 Telecom: 96.8%, DeepSearchQA: 86.7%, PinchBench: 81.0%, SWE-Bench Verified: 78.0%, SWE-bench Multilingual: 71.7%.

Is GPT-5.5 Instant cheaper than MiMo-V2-Pro?

MiMo-V2-Pro is 5.0x cheaper for input tokens. GPT-5.5 Instant costs $5.00/M input and $30.00/M output via openai. MiMo-V2-Pro costs $1.00/M input and $3.00/M output via xiaomi.

What are the context window sizes for GPT-5.5 Instant and MiMo-V2-Pro?

GPT-5.5 Instant supports 400K tokens and MiMo-V2-Pro supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT-5.5 Instant and MiMo-V2-Pro?

Key differences include context window (400K vs 1.0M), input pricing ($5.00 vs $1.00/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-5.5 Instant and MiMo-V2-Pro?

GPT-5.5 Instant is developed by OpenAI and MiMo-V2-Pro is developed by Xiaomi.

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