Model Comparison

GPT-5 vs MiMo-V2.5Which is better in 2026?

GPT-5 significantly outperforms across most benchmarks. MiMo-V2.5 is 16.4x cheaper per token.

Verdict: GPT-5 vs MiMo-V2.5 — which is better?

GPT-5 (by OpenAI) and MiMo-V2.5 (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.

GPT-5 outperforms in 2 benchmarks (CharXiv-R, MMMU-Pro), while MiMo-V2.5 is better at 0 benchmarks. GPT-5 significantly outperforms across most benchmarks.

On price, MiMo-V2.5 is roughly 16.4x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

MiMo-V2.5 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Choose GPT-5 if…

  • you want the strongest raw capability — it leads on 2 of 2 shared benchmarks

Choose MiMo-V2.5 if…

  • cost matters — it's about 16.4x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Apr 2026
  • you need open weights you can self-host or fine-tune

Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

GPT-5 outperforms in 2 benchmarks (CharXiv-R, MMMU-Pro), while MiMo-V2.5 is better at 0 benchmarks.

GPT-5 significantly outperforms across most benchmarks.

Wed Jul 29 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

MiMo-V2.5 costs less

For input processing, GPT-5 ($1.25/1M tokens) is 7.4x more expensive than MiMo-V2.5 ($0.17/1M tokens).

For output processing, GPT-5 ($10.00/1M tokens) is 29.8x more expensive than MiMo-V2.5 ($0.34/1M tokens).

In conclusion, GPT-5 is more expensive than MiMo-V2.5.*

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

Lowest available price from all providers
Wed Jul 29 2026 • llm-stats.com
OpenAI
GPT-5
Input tokens$1.25
Output tokens$10.00
Best providerOpenAI
Xiaomi
MiMo-V2.5
Input tokens$0.17
Output tokens$0.34
Best providerNovita
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

MiMo-V2.5 accepts 1,048,576 input tokens compared to GPT-5's 400,000 tokens. MiMo-V2.5 can generate longer responses up to 131,072 tokens, while GPT-5 is limited to 128,000 tokens.

OpenAI
GPT-5
Input400,000 tokens
Output128,000 tokens
Xiaomi
MiMo-V2.5
Input1,048,576 tokens
Output131,072 tokens
Wed Jul 29 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-5 and MiMo-V2.5 support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

GPT-5

Text
Images
Audio
Video

MiMo-V2.5

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-5 is licensed under a proprietary license, while MiMo-V2.5 uses MIT.

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

GPT-5

Proprietary

Closed source

MiMo-V2.5

MIT

Open weights

Release Timeline

When each model was launched

GPT-5 was released on 2025-08-07, while MiMo-V2.5 was released on 2026-04-22.

MiMo-V2.5 is 9 months newer than GPT-5.

GPT-5

Aug 7, 2025

11 months ago

MiMo-V2.5

Apr 22, 2026

3 months ago

8mo newer

Knowledge Cutoff

When training data ends

GPT-5 has a documented knowledge cutoff of 2024-09-30, while MiMo-V2.5's cutoff date is not specified.

We can confirm GPT-5's training data extends to 2024-09-30, but cannot make a direct comparison without MiMo-V2.5's cutoff date.

GPT-5

Sep 2024

MiMo-V2.5

—

Provider Availability

GPT-5 is available from OpenAI. MiMo-V2.5 is available from Novita, DeepInfra.

GPT-5

openai logo
OpenAI
Input Price:Input: $1.25/1MOutput Price:Output: $10.00/1M

MiMo-V2.5

novita logo
Novita
Input Price:Input: $0.17/1MOutput Price:Output: $0.34/1M
deepinfra logo
Deepinfra
Input Price:Input: $0.40/1MOutput Price:Output: $2.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Higher CharXiv-R score (81.1% vs 81.0%)
Higher MMMU-Pro score (78.4% vs 77.9%)
Xiaomi
Larger context window (1,048,576 tokens)
Less expensive input tokens
Less expensive output tokens
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against GPT-5 and MiMo-V2.5 side-by-side, then vote on the output you prefer.

GPT-5
✓ Preferred
MiMo-V2.5
Open in Playground
AI Model Comparison Table
Feature
OpenAI
GPT-5
Xiaomi
MiMo-V2.5

FAQ

Common questions about GPT-5 vs MiMo-V2.5.

Which is better, GPT-5 or MiMo-V2.5?

GPT-5 significantly outperforms across most benchmarks. GPT-5 is made by OpenAI and MiMo-V2.5 is made by Xiaomi. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-5 compare to MiMo-V2.5 in benchmarks?

GPT-5 scores SWE-Lancer (IC-Diamond subset): 100.0%, COLLIE: 99.0%, Tau2 Telecom: 96.7%, OpenAI-MRCR: 2 needle 128k: 95.2%, AIME 2025: 94.6%. MiMo-V2.5 scores HR-Bench (4k): 88.5%, Video-MME: 87.7%, OmniDocBench: 87.2%, GraphWalks: 87.0%, DailyOmni: 83.5%.

Is GPT-5 cheaper than MiMo-V2.5?

MiMo-V2.5 is 7.4x cheaper for input tokens. GPT-5 costs $1.25/M input and $10.00/M output via openai. MiMo-V2.5 costs $0.17/M input and $0.34/M output via novita.

What are the context window sizes for GPT-5 and MiMo-V2.5?

GPT-5 supports 400K tokens and MiMo-V2.5 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 and MiMo-V2.5?

Key differences include context window (400K vs 1.0M), input pricing ($1.25 vs $0.17/M), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-5 and MiMo-V2.5?

GPT-5 is developed by OpenAI and MiMo-V2.5 is developed by Xiaomi.

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