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VECTOR WIREAI INTELLIGENCE
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Llama 3.1 8B Instruct vs Llama 3 Instruct 8B

Meta · released

Wins 3 of 5 areas

Coding · Long documents · Following instructions

Meta · released

Wins 1 of 5 areas

Reasoning

Llama 3.1 8B Instruct is the stronger all-rounder.Llama 3 Instruct 8B is better at reasoning.

Scores updated · 30 tests both models report · How we compare

Where each one wins

Tests won in each of the five areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.

Long documents and following instructions rest on a single test each.

What it costs

Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.

Llama 3.1 8B Instruct$0.02 to read · $0.05 to write$0.07Price from Artificial Analysis
Llama 3 Instruct 8B$0.04 to read · $0.14 to write$0.19Price from Artificial Analysis

Llama 3.1 8B Instruct costs 63% less for the same work.

The biggest differences

The tests each model wins by the widest margin, up to three each. Scores are out of 100.

Where Llama 3.1 8B Instruct pulls ahead

  • Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+46.8points aheadLlama 3.1 8B Instruct57Llama 3 Instruct 8B10.2
  • Follows unfamiliar, precisely checkable instructionsIFBench+4points aheadLlama 3.1 8B Instruct28.6Llama 3 Instruct 8B24.6
  • Code for real scientific research problemsSciCode+1.3points aheadLlama 3.1 8B Instruct13.2Llama 3 Instruct 8B11.9

Where Llama 3 Instruct 8B pulls ahead

  • Graduate-level biology, physics and chemistry questionsGPQA Diamond+3.7points aheadLlama 3 Instruct 8B29.6Llama 3.1 8B Instruct25.9
  • Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+1.9points aheadLlama 3 Instruct 8B10.4Llama 3.1 8B Instruct8.5

Every test, side by side

All 30 tests both models report. The winning score is in its model's colour; marks a score checked independently.

CodingLlama 3.1 8B Instruct

Full coding ranking

ReasoningLlama 3 Instruct 8B

Full reasoning ranking

FactsEven

Full facts ranking

Long documentsLlama 3.1 8B Instruct
  • AA-LCRLlama 3.1 8B Instruct by 18180+18

Full long documents ranking

Following instructionsLlama 3.1 8B Instruct
  • IFBenchLlama 3.1 8B Instruct by 428.624.6+4

Full following instructions ranking

Other results21 tests, not counted

Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.

Questions people ask

Which is better, Llama 3.1 8B Instruct or Llama 3 Instruct 8B?

Llama 3.1 8B Instruct wins three of the five areas where both have results: coding, long documents and following instructions. Llama 3 Instruct 8B wins reasoning. They are level on facts.

Which is better for coding?

Llama 3.1 8B Instruct. It wins 1 of the 2 coding tests both models report; Llama 3 Instruct 8B wins none, and 1 is a tie.

Which is cheaper?

Llama 3.1 8B Instruct costs $0.02 per million input tokens and $0.05 per million output tokens; Llama 3 Instruct 8B costs $0.04 and $0.14. That makes Llama 3.1 8B Instruct about 63% cheaper for the same work.

How do you compare the two?

We use the 30 benchmark tests both models have published scores on. The verdict counts the 9 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 21 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.