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TokenMath.net
Updated 2026-09-22 11:16 UTC
Head-to-Head Specification Battle

Qwen 2.5 72B Instruct — Together AI vs Llama 3.1 405B — Together AI

Side-by-side technical and economic comparison between Alibaba / Qwen's Qwen 2.5 72B Instruct — Together AI and Meta / Together's Llama 3.1 405B — Together AI.

Endpoint Availability & Transition Notice

Qwen 2.5 72B Instruct — Together AI: Classified as a Legacy Reference model (Deprecated on Together AI (Reference)).

Llama 3.1 405B — Together AI: Classified as a Legacy Reference model (Deprecated on Together AI (Reference)).

Core Technical & Pricing Comparison
MetricQwen 2.5 72B Instruct — Together AILlama 3.1 405B — Together AIAdvantage
Provider OrganizationAlibaba / QwenMeta / Together
Standard Input / 1M$0.35$3.50Qwen 2.5 72B Instruct — Together AI (90% lower)
Cached Input / 1M$0.175NoneQwen 2.5 72B Instruct — Together AI lower
Output / 1M$0.40$3.50Qwen 2.5 72B Instruct — Together AI lower
Context Window128k128kEqual
Max Generation Tokens8.2k4.1kQwen 2.5 72B Instruct — Together AI
Tokenizer FamilyQwen Byte-level BPE (~152k vocabulary)Meta Llama 3 Tiktoken BPE (~128k vocabulary)

Interactive Side-by-Side Cost Simulator

Live Delta
Input Tokens / Req2,500
Output Tokens / Req800
Daily Requests10,000
Qwen 2.5 72B Instruct — Together AILOWER COST
$292.88 / month
$0.00098 / request
Llama 3.1 405B — Together AI
$3,465.00 / month
$0.0116 / request
Selecting Qwen 2.5 72B Instruct — Together AI saves $3,172.13 / month (91.5% savings) over Llama 3.1 405B — Together AI.

When to Choose Qwen 2.5 72B Instruct — Together AI

Opt for Qwen 2.5 72B Instruct — Together AI when your engineering requirements prioritize Alibaba / Qwen's ecosystem, specific tokenizer efficiencies (Calibrated Qwen Tokenizer (±3%)), or when your expected prompt-to-completion ratios favor its $0.35/M input rate.

When to Choose Llama 3.1 405B — Together AI

Opt for Llama 3.1 405B — Together AI when looking for Meta / Together's tooling integration, specific context window depth (128k tokens), or when output generation volume favors its $3.5/M rate.