Model Comparison

Kimi K2.7 Code vs GPT-5.5 ProWhich is better in 2026?

Comparing Kimi K2.7 Code and GPT-5.5 Pro across benchmarks, pricing, and capabilities.

Verdict: Kimi K2.7 Code vs GPT-5.5 Pro — which is better?

Kimi K2.7 Code (by Moonshot AI) and GPT-5.5 Pro (by OpenAI) 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, Kimi K2.7 Code is roughly 47.2x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

GPT-5.5 Pro also accepts a larger context window (1,050,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Kimi K2.7 Code if…

  • cost matters — it's about 47.2x cheaper per token
  • you want the most recent training data — it shipped Jun 2026
  • you need open weights you can self-host or fine-tune

Choose GPT-5.5 Pro if…

  • you process long inputs — it offers a 1,050,000 token context window

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Kimi K2.7 Code and GPT-5.5 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

Kimi K2.7 Code costs less

For input processing, Kimi K2.7 Code ($0.74/1M tokens) is 40.5x cheaper than GPT-5.5 Pro ($30.00/1M tokens).

For output processing, Kimi K2.7 Code ($3.50/1M tokens) is 51.4x cheaper than GPT-5.5 Pro ($180.00/1M tokens).

In conclusion, GPT-5.5 Pro is more expensive than Kimi K2.7 Code.*

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

Lowest available price from all providers
Fri Jul 17 2026 • llm-stats.com
Moonshot AI
Kimi K2.7 Code
Input tokens$0.74
Output tokens$3.50
Best providerDeepinfra
OpenAI
GPT-5.5 Pro
Input tokens$30.00
Output tokens$180.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

GPT-5.5 Pro accepts 1,050,000 input tokens compared to Kimi K2.7 Code's 262,144 tokens. Kimi K2.7 Code can generate longer responses up to 131,072 tokens, while GPT-5.5 Pro is limited to 128,000 tokens.

Moonshot AI
Kimi K2.7 Code
Input262,144 tokens
Output131,072 tokens
OpenAI
GPT-5.5 Pro
Input1,050,000 tokens
Output128,000 tokens
Fri Jul 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Kimi K2.7 Code and GPT-5.5 Pro support multimodal inputs.

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

Kimi K2.7 Code

Text
Images
Audio
Video

GPT-5.5 Pro

Text
Images
Audio
Video

License

Usage and distribution terms

Kimi K2.7 Code is licensed under Modified MIT License, while GPT-5.5 Pro uses a proprietary license.

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

Kimi K2.7 Code

Modified MIT License

Open weights

GPT-5.5 Pro

Proprietary

Closed source

Release Timeline

When each model was launched

Kimi K2.7 Code was released on 2026-06-12, while GPT-5.5 Pro was released on 2026-04-23.

Kimi K2.7 Code is 2 months newer than GPT-5.5 Pro.

Kimi K2.7 Code

Jun 12, 2026

1 months ago

1mo newer
GPT-5.5 Pro

Apr 23, 2026

2 months ago

Knowledge Cutoff

When training data ends

GPT-5.5 Pro has a documented knowledge cutoff of 2025-12-01, while Kimi K2.7 Code's cutoff date is not specified.

We can confirm GPT-5.5 Pro's training data extends to 2025-12-01, but cannot make a direct comparison without Kimi K2.7 Code's cutoff date.

Kimi K2.7 Code

—

GPT-5.5 Pro

Dec 2025

Provider Availability

Kimi K2.7 Code is available from DeepInfra, Fireworks, Moonshot AI, Novita, Together. GPT-5.5 Pro is available from OpenAI.

Kimi K2.7 Code

deepinfra logo
Deepinfra
Input Price:Input: $0.74/1MOutput Price:Output: $3.50/1M
fireworks logo
Fireworks
Input Price:Input: $0.95/1MOutput Price:Output: $4.00/1M
moonshot logo
Unknown Organization
Input Price:Input: $0.95/1MOutput Price:Output: $4.00/1M
novita logo
Novita
Input Price:Input: $0.95/1MOutput Price:Output: $4.00/1M
together logo
Together
Input Price:Input: $0.95/1MOutput Price:Output: $4.00/1M

GPT-5.5 Pro

openai logo
OpenAI
Input Price:Input: $30.00/1MOutput Price:Output: $180.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Moonshot AI
Less expensive input tokens
Less expensive output tokens
Has open weights
OpenAI
Larger context window (1,050,000 tokens)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Kimi K2.7 Code and GPT-5.5 Pro side-by-side, then vote on the output you prefer.

Kimi K2.7 Code
✓ Preferred
GPT-5.5 Pro
Open in Playground
AI Model Comparison Table
Feature
Moonshot AI
Kimi K2.7 Code
OpenAI
GPT-5.5 Pro

FAQ

Common questions about Kimi K2.7 Code vs GPT-5.5 Pro.

Which is better, Kimi K2.7 Code or GPT-5.5 Pro?

Kimi K2.7 Code (Moonshot AI) and GPT-5.5 Pro (OpenAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Kimi K2.7 Code compare to GPT-5.5 Pro in benchmarks?

Kimi K2.7 Code scores MCP-Mark: 81.1%, MCP Atlas: 76.0%, LiveBench: 71.9%, Kimi Code Bench v2: 62.0%, Program Bench: 53.6%. GPT-5.5 Pro scores BrowseComp: 90.1%, GDPval-MM: 82.3%, Humanity's Last Exam: 57.2%, FrontierMath: 39.6%, GeneBench: 33.2%.

Is Kimi K2.7 Code cheaper than GPT-5.5 Pro?

Kimi K2.7 Code is 40.5x cheaper for input tokens. Kimi K2.7 Code costs $0.74/M input and $3.50/M output via deepinfra. GPT-5.5 Pro costs $30.00/M input and $180.00/M output via openai.

What are the context window sizes for Kimi K2.7 Code and GPT-5.5 Pro?

Kimi K2.7 Code supports 262K tokens and GPT-5.5 Pro supports 1.1M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Kimi K2.7 Code and GPT-5.5 Pro?

Key differences include context window (262K vs 1.1M), input pricing ($0.74 vs $30.00/M), licensing (Modified MIT License vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Kimi K2.7 Code and GPT-5.5 Pro?

Kimi K2.7 Code is developed by Moonshot AI and GPT-5.5 Pro is developed by OpenAI.

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