GPT-4 Turbo vs Kimi K2.8 Preview
Comparing GPT-4 Turbo and Kimi K2.8 Preview across benchmarks, pricing, and capabilities.
OpenAI · Moonshot AI · Updated for 2026
Which is better?
GPT-4 Turbo and Kimi K2.8 Preview trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
Kimi K2.8 Preview 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-4 Turbo
- you want predictable pricing at $10.00/M input and $30.00/M output
Choose Kimi K2.8 Preview
- you process long inputs — it offers a 1,048,576 token context window
- you want the most recent training data — it shipped Sep 2026
At a glance
The differences that matter most.
Individual benchmarks
6 reported for GPT-4 Turbo · 0 for Kimi K2.8 Preview
GPT-4 Turbo and Kimi K2.8 Previewdon'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
Context Window
Maximum input and output token capacity
Kimi K2.8 Preview accepts 1,048,576 input tokens compared to GPT-4 Turbo's 128,000 tokens. Only GPT-4 Turbo specifies output context (4,096 tokens).
Input capabilities
Documented input modalities across available providers
Kimi K2.8 Preview supports multimodal inputs, whereas GPT-4 Turbo does not.
Kimi K2.8 Preview can handle both text and other forms of data like images, making it suitable for multimodal applications.
GPT-4 Turbo
Kimi K2.8 Preview
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
GPT-4 Turbo was released on 2024-04-09, while Kimi K2.8 Preview was released on 2026-09-11.
Kimi K2.8 Preview is 30 months newer than GPT-4 Turbo.
Apr 9, 2024
2.4 years ago
Sep 11, 2026
3 days ago
2.4yr newerKnowledge Cutoff
When training data ends
GPT-4 Turbo has a documented knowledge cutoff of 2023-12-31, while Kimi K2.8 Preview's cutoff date is not specified.
We can confirm GPT-4 Turbo's training data extends to 2023-12-31, but cannot make a direct comparison without Kimi K2.8 Preview's cutoff date.
Dec 2023
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Provider Availability
GPT-4 Turbo is available from Azure, OpenAI. Kimi K2.8 Preview is available from Moonshot AI.
GPT-4 Turbo
Kimi K2.8 Preview
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-4 Turbo and Kimi K2.8 Preview side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-4 Turbo vs Kimi K2.8 Preview.