token.app › Compare › Llama 3.1 8B Instruct vs Claude Opus 5

Llama 3.1 8B Instruct vs Claude Opus 5

Claude Opus 5 leads on 2 of 2 shared benchmarks. Llama 3.1 8B Instruct is 174× cheaper per token on a blended 3:1 basis. Claude Opus 5 accepts the larger context window (1M).

Head to head
Blended price uses a 3:1 input:output mix
Llama 3.1 8B InstructClaude Opus 5
ProviderMetaAnthropic
Input $/1M$0.050$5.00
Output $/1M$0.080$25.00
Blended $/1M$0.058$10.00
Context window131K1M
Max output131K128K
ReleasedJul 2024Jul 2026
LicenceOpen weightsProprietary
GPQA Diamond 25.9% 93.9%
OTIS Mock AIME 2.5% 98.9%
Benchmark scores independently run and published by Epoch AI, 'AI Benchmarking Hub', used under CC BY 4.0. Only benchmarks with a score for BOTH models are compared.
Choose Llama 3.1 8B Instruct if…
  • Costs less per token — $0.058 vs $10.00 blended
  • Open weights — self-hostable
Choose Claude Opus 5 if…
  • Higher GPQA Diamond (93.9% vs 25.9%)
  • Higher OTIS Mock AIME (98.9% vs 2.5%)
  • Larger context window (1M)
  • Newer model (released Jul 2026)
FAQ
Which is better, Llama 3.1 8B Instruct or Claude Opus 5?
Across the 2 benchmarks both models have independently-run scores for, Llama 3.1 8B Instruct leads on 0 and Claude Opus 5 leads on 2. Benchmarks are one input — price and context window are on this page too.
Is Llama 3.1 8B Instruct cheaper than Claude Opus 5?
Llama 3.1 8B Instruct is cheaper: $0.058 versus $10.00 per million tokens blended at 3:1 input:output. Input alone: $0.050 vs $5.00. Output alone: $0.080 vs $25.00.
What context windows do Llama 3.1 8B Instruct and Claude Opus 5 have?
Llama 3.1 8B Instruct: 131,072 tokens. Claude Opus 5: 1,000,000 tokens.
Who makes Llama 3.1 8B Instruct and Claude Opus 5?
Llama 3.1 8B Instruct is made by Meta. Claude Opus 5 is made by Anthropic.
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