Model Comparison
Kimi K3 vs Llama 3.1 8B InstructWhich is better in 2026?
Kimi K3 significantly outperforms across most benchmarks. Llama 3.1 8B Instruct is 200.0x cheaper per token.
Verdict: Kimi K3 vs Llama 3.1 8B Instruct — which is better?
Kimi K3 (by Moonshot AI) and Llama 3.1 8B Instruct (by Meta) 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.
Kimi K3 outperforms in 1 benchmarks (GPQA), while Llama 3.1 8B Instruct is better at 0 benchmarks. Kimi K3 significantly outperforms across most benchmarks.
On price, Llama 3.1 8B Instruct is roughly 200.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Kimi K3 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Choose Kimi K3 if…
- you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
- you process long inputs — it offers a 1,048,576 token context window
- you want the most recent training data — it shipped Jul 2026
Choose Llama 3.1 8B Instruct if…
- cost matters — it's about 200.0x cheaper per token
- you need open weights you can self-host or fine-tune
Performance Benchmarks
Comparative analysis across standard metrics
Kimi K3 outperforms in 1 benchmarks (GPQA), while Llama 3.1 8B Instruct is better at 0 benchmarks.
Kimi K3 significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, Kimi K3 ($3.00/1M tokens) is 100.0x more expensive than Llama 3.1 8B Instruct ($0.03/1M tokens).
For output processing, Kimi K3 ($15.00/1M tokens) is 500.0x more expensive than Llama 3.1 8B Instruct ($0.03/1M tokens).
In conclusion, Kimi K3 is more expensive than Llama 3.1 8B Instruct.*
* Using a 3:1 ratio of input to output tokens
Model Size
Parameter count comparison
Kimi K3 has 2792.0B more parameters than Llama 3.1 8B Instruct, making it 34900.0% larger.
Context Window
Maximum input and output token capacity
Kimi K3 accepts 1,048,576 input tokens compared to Llama 3.1 8B Instruct's 131,072 tokens. Kimi K3 can generate longer responses up to 1,048,576 tokens, while Llama 3.1 8B Instruct is limited to 131,072 tokens.
Input Capabilities
Supported data types and modalities
Kimi K3 supports multimodal inputs, whereas Llama 3.1 8B Instruct does not.
Kimi K3 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Kimi K3
Llama 3.1 8B Instruct
Release Timeline
When each model was launched
Kimi K3 was released on 2026-07-16, while Llama 3.1 8B Instruct was released on 2024-07-23.
Kimi K3 is 24 months newer than Llama 3.1 8B Instruct.
Jul 16, 2026
3 days ago
2.0yr newerJul 23, 2024
2.0 years ago
Knowledge Cutoff
When training data ends
Llama 3.1 8B Instruct has a documented knowledge cutoff of 2023-12-31, while Kimi K3's cutoff date is not specified.
We can confirm Llama 3.1 8B Instruct's training data extends to 2023-12-31, but cannot make a direct comparison without Kimi K3's cutoff date.
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Dec 2023
Provider Availability
Kimi K3 is available from Moonshot AI. Llama 3.1 8B Instruct is available from Lambda, DeepInfra, Groq, Sambanova, Cerebras, Hyperbolic, Together, Fireworks, Bedrock.
Kimi K3
Llama 3.1 8B Instruct
Outputs Comparison
Key Takeaways
Kimi K3
View detailsMoonshot AI
Detailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against Kimi K3 and Llama 3.1 8B Instruct side-by-side, then vote on the output you prefer.
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FAQ
Common questions about Kimi K3 vs Llama 3.1 8B Instruct.