Llama 3.1 Tulu3 405B
Analysis Summary
Llama 3.1 Tulu3 405B is a large instruction-tuned open model from the Allen Institute for AI. Within this batch it has the strongest supplied general reasoning, language, and coding results, including meaningful performance on knowledge, code generation, and scientific coding tasks. Its large parameter count may also increase infrastructure demands, although deployment requirements are not provided.
The model is best suited to teams evaluating self-hosted content generation, code assistance, and research workflows that can tolerate human review. It is not supported by tool-use, context, speed, or pricing data, so its fit for autonomous agents and high-volume production remains uncertain. Adopt it where open deployment is central and local evaluation is available.
Assessed August 9, 2026
Editorial notes
Llama 3.1 Tulu3 405B provides the strongest general and coding evidence in this batch, but its measured capability remains well below current frontier systems and operational data is incomplete.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
DFO Verdict
Llama 3.1 Tulu3 405B provides the strongest general and coding evidence in this batch, but its measured capability remains well below current frontier systems and operational data is incomplete.
Benchmark scores
Magenta = intelligence · Ink = technical/agentic · Cyan = content & long-context · Grey = community benchmarks. Data: Artificial Analysis, Hugging Face.
8.1 Intelligence Index
How Llama 3.1 Tulu3 405B compares
Llama 3.1 Tulu3 405B ranks #310 of 427 AI models we track for overall intelligence. Llama 3.1 Tulu3 405B is currently free to use via OpenRouter.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Strongest on content. The pulled-in value corner is the trade-off, and if the shape matters more than the price, this is your model.
Compare shapes side-by-side →
Frequently asked questions about Llama 3.1 Tulu3 405B
How much does Llama 3.1 Tulu3 405B cost?
Llama 3.1 Tulu3 405B is currently available for free via OpenRouter.
Who created Llama 3.1 Tulu3 405B?
Llama 3.1 Tulu3 405B is developed by Allen Institute For AI and was released on January 30, 2025.