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GPT-3.5 Turbo vs Kimi K3.1 Pro

Kimi K3.1 Pro leads the LLM Stats Score 55.5 to -9.8. GPT-3.5 Turbo is 5.3x cheaper per token.

OpenAI · Moonshot AI · Updated for 2026

Which is better?

Kimi K3.1 Pro leads the overall LLM Stats Score 55.5 to -9.8, ranking #5 overall.

In the 1 individual benchmarks reported for both models, Kimi K3.1 Pro wins 1; this is a narrower head-to-head signal than the composite indexes.

On price, GPT-3.5 Turbo is roughly 5.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Kimi K3.1 Pro 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 GPT-3.5 Turbo

  • cost matters — it's about 5.3x cheaper per token

Choose Kimi K3.1 Pro

  • overall performance matters — it scores 55.5 and ranks #5 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Oct 2026

At a glance

The differences that matter most.

GPT-3.5 Turbo
OpenAI
Kimi K3.1 Pro
Moonshot AI
Core performance indexes
LLM Stats Score
-9.8
#401
55.5
#5
Reasoning
-9.1
#394
54.3
#6
Coding
-4.6
#292
42.7
#9
Cost, coverage & limits
Benchmark wins
0 of 1
1 of 1
Input price
$0.50 / M
$2.00 / M
Output price
$1.50 / M
$10.00 / M
Context window
16,385
1,048,576

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared
Index
GPT-3.5 Turbo
Kimi K3.1 Pro
Math
-2.4#331
38.6#26
Vision
-16.2#238
40.5#4
Multimodal
-14.5#191
40.8#2
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

8 reported for GPT-3.5 Turbo · 30 for Kimi K3.1 Pro

1 shared

GPT-3.5 Turbo outperforms in 0 benchmarks, while Kimi K3.1 Pro is better at 1 benchmark (GPQA).

Kimi K3.1 Pro significantly outperforms across most benchmarks.

Thu Oct 29 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

GPT-3.5 Turbo costs less

For input processing, GPT-3.5 Turbo ($0.50/1M tokens) is 4.0x cheaper than Kimi K3.1 Pro ($2.00/1M tokens).

For output processing, GPT-3.5 Turbo ($1.50/1M tokens) is 6.7x cheaper than Kimi K3.1 Pro ($10.00/1M tokens).

In conclusion, Kimi K3.1 Pro is more expensive than GPT-3.5 Turbo.*

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

Lowest available price from all providers
Thu Oct 29 2026 • llm-stats.com
OpenAI
GPT-3.5 Turbo
Input tokens$0.50
Output tokens$1.50
Best providerAzure
Moonshot AI
Kimi K3.1 Pro
Input tokens$2.00
Output tokens$10.00
Best providerUnknown Organization
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Kimi K3.1 Pro accepts 1,048,576 input tokens compared to GPT-3.5 Turbo's 16,385 tokens. Kimi K3.1 Pro can generate longer responses up to 1,048,576 tokens, while GPT-3.5 Turbo is limited to 4,096 tokens.

OpenAI
GPT-3.5 Turbo
Input16,385 tokens
Output4,096 tokens
Moonshot AI
Kimi K3.1 Pro
Input1,048,576 tokens
Output1,048,576 tokens
Thu Oct 29 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Kimi K3.1 Pro supports multimodal inputs, whereas GPT-3.5 Turbo does not.

Kimi K3.1 Pro can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT-3.5 Turbo

Text
Images
Audio
Video

Kimi K3.1 Pro

Text
Images
Audio
Video

Release Timeline

When each model was launched

GPT-3.5 Turbo was released on 2023-03-21, while Kimi K3.1 Pro was released on 2026-10-23.

Kimi K3.1 Pro is 44 months newer than GPT-3.5 Turbo.

GPT-3.5 Turbo

Mar 21, 2023

3.6 years ago

Kimi K3.1 Pro

Oct 23, 2026

4 days ago

3.6yr newer

Knowledge Cutoff

When training data ends

GPT-3.5 Turbo has a documented knowledge cutoff of 2021-09-30, while Kimi K3.1 Pro's cutoff date is not specified.

We can confirm GPT-3.5 Turbo's training data extends to 2021-09-30, but cannot make a direct comparison without Kimi K3.1 Pro's cutoff date.

GPT-3.5 Turbo

Sep 2021

Kimi K3.1 Pro

—

Provider Availability

GPT-3.5 Turbo is available from Azure, OpenAI. Kimi K3.1 Pro is available from Moonshot AI.

GPT-3.5 Turbo

azure logo
Azure
Input Price:Input: $0.50/1MOutput Price:Output: $1.50/1M
openai logo
OpenAI
Input Price:Input: $0.50/1MOutput Price:Output: $1.50/1M

Kimi K3.1 Pro

moonshot logo
Unknown Organization
Input Price:Input: $2.00/1MOutput Price:Output: $10.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against GPT-3.5 Turbo and Kimi K3.1 Pro side-by-side, then vote on the output you prefer.

GPT-3.5 Turbo
✓ Preferred
Kimi K3.1 Pro
Open in Playground

FAQ

Common questions about GPT-3.5 Turbo vs Kimi K3.1 Pro.

Which is better, GPT-3.5 Turbo or Kimi K3.1 Pro?

Kimi K3.1 Pro leads the LLM Stats Score 55.5 to -9.8. GPT-3.5 Turbo is made by OpenAI and Kimi K3.1 Pro is made by Moonshot AI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does GPT-3.5 Turbo compare to Kimi K3.1 Pro in benchmarks?

GPT-3.5 Turbo scores DROP: 70.2%, MMLU: 69.8%, HumanEval: 68.0%, MGSM: 56.3%, MATH: 43.1%. Kimi K3.1 Pro scores BabyVision: 95.4%, GPQA: 94.2%, BenchCAD (with Python tool): 92.7%, BrowseComp: 92.1%, Chartography: 90.2%.

Is GPT-3.5 Turbo cheaper than Kimi K3.1 Pro?

GPT-3.5 Turbo is 4.0x cheaper for input tokens. GPT-3.5 Turbo costs $0.50/M input and $1.50/M output via azure. Kimi K3.1 Pro costs $2.00/M input and $10.00/M output via moonshot.

What are the context window sizes for GPT-3.5 Turbo and Kimi K3.1 Pro?

GPT-3.5 Turbo supports 16K tokens and Kimi K3.1 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-3.5 Turbo and Kimi K3.1 Pro?

Key differences include LLM Stats Score (-9.8 vs 55.5), context window (16K vs 1.0M), input pricing ($0.50 vs $2.00/M), multimodal support (no vs yes), licensing (Proprietary vs Unknown). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-3.5 Turbo and Kimi K3.1 Pro?

GPT-3.5 Turbo is developed by OpenAI and Kimi K3.1 Pro is developed by Moonshot AI.

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