Llama 3.1 405B Instruct vs Particle-1
Particle-1 leads the LLM Stats Score 31.9 to 14.3. Particle-1 is 2.0x cheaper per token.
Meta · Particle AI · Updated for 2026
Which is better?
Particle-1 leads the overall LLM Stats Score 31.9 to 14.3, ranking #133 overall.
The models split the 2 individual benchmarks reported for both models evenly.
On price, Particle-1 is roughly 2.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Particle-1 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 Llama 3.1 405B Instruct
- you need open weights you can self-host or fine-tune
Choose Particle-1
- overall performance matters — it scores 31.9 and ranks #133 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
- cost matters — it's about 2.0x 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 Oct 2026
At a glance
The differences that matter most.
Individual benchmarks
18 reported for Llama 3.1 405B Instruct · 3 for Particle-1
Llama 3.1 405B Instruct outperforms in 1 benchmarks (MMLU), while Particle-1 is better at 1 benchmark (GPQA).
Both models are evenly matched across the benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Llama 3.1 405B Instruct ($0.89/1M tokens) is 3.6x more expensive than Particle-1 ($0.25/1M tokens).
For output processing, Llama 3.1 405B Instruct ($0.89/1M tokens) is 1.1x cheaper than Particle-1 ($1.00/1M tokens).
In conclusion, Llama 3.1 405B Instruct is more expensive than Particle-1.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Particle-1 accepts 1,048,576 input tokens compared to Llama 3.1 405B Instruct's 128,000 tokens. Particle-1 can generate longer responses up to 131,072 tokens, while Llama 3.1 405B Instruct is limited to 128,000 tokens.
Input capabilities
Documented input modalities across available providers
Particle-1 supports multimodal inputs, whereas Llama 3.1 405B Instruct does not.
Particle-1 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Llama 3.1 405B Instruct
Particle-1
License
Usage and distribution terms
Llama 3.1 405B Instruct is licensed under Llama 3.1 Community License, while Particle-1 uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
Llama 3.1 Community License
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
Llama 3.1 405B Instruct was released on 2024-07-23, while Particle-1 was released on 2026-10-28.
Particle-1 is 28 months newer than Llama 3.1 405B Instruct.
Jul 23, 2024
2.3 years ago
Oct 28, 2026
2 days ago
2.3yr newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Llama 3.1 405B Instruct is available from Lambda, DeepInfra, Fireworks, Bedrock, Together, Hyperbolic, Google, Replicate. Particle-1 is available from Particle AI.
Llama 3.1 405B Instruct
Particle-1
Outputs Comparison
Judge for yourself.
Run your own prompts against Llama 3.1 405B Instruct and Particle-1 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Llama 3.1 405B Instruct vs Particle-1.