Meta Llama 3.1 70B Instruct Turbo vs Meta Llama 3.1 8B Instruct Turbo

Meta Llama 3.1 70B Instruct Turbo grades higher overall (26.8 against 0.0). Meta Llama 3.1 8B Instruct Turbo costs 94% less for the same work, and both read a 128K-token context.

Model A

Meta Llama 3.1 70B Instruct Turbo

by Meta · #63 of 67 overall

Coming soon · price at launch

Context: 128K
Input / 1M: $0.40
Output / 1M: $0.40

Model B

Meta Llama 3.1 8B Instruct Turbo

by Meta · #67 of 67 overall

Coming soon · price at launch

Context: 128K
Input / 1M: $0.020
Output / 1M: $0.040

Better overall

Meta Llama 3.1 70B Instruct Turbo

Grade 26.8 vs 0.0

Cheaper

Meta Llama 3.1 8B Instruct Turbo

94% less, $0.025 vs $0.40 blended

Larger context

Same

128K vs 128K tokens

Head to head

Public benchmarks. Longer is better; each value links to its source.

LMArena TextElo-style rating · LMArena (CC BY 4.0) · Oct 15, 2026

Meta Llama 3.1 70B Instruct Turbo1,293

Meta Llama 3.1 8B Instruct Turbo1,211

LMArena CodingElo-style rating · LMArena (CC BY 4.0) · Oct 15, 2026

Meta Llama 3.1 70B Instruct Turbo1,333

Meta Llama 3.1 8B Instruct Turbo1,260

Meta Llama 3.1 70B Instruct TurboMeta Llama 3.1 8B Instruct Turbov = reported by the model’s maker. — = no public score yet. Arena bars span the range across every model we grade.

What it costs you

Drag to match your monthly usage.

Input tokens a month200MOutput tokens a month40M

Meta Llama 3.1 70B Instruct Turbo$96.00 /month

Meta Llama 3.1 8B Instruct Turbo$5.60 /month

Meta Llama 3.1 8B Instruct Turbo saves you $90.40 a month at this usage, $1,085 a year.

At a glance

Attribute	Meta Llama 3.1 70B Instruct Turbo	Meta Llama 3.1 8B Instruct Turbo
Made by	Meta	Meta
Availability	Coming soon	Coming soon
Overall grade	Good · 26.8	Good · 0.0
Overall rank	#63 of 67	#67 of 67
Input price	$0.40 per 1M	$0.020 per 1M
Output price	$0.40 per 1M	$0.040 per 1M
Context window	131,072 tokens	131,072 tokens
Reasoning levels	No	No
Reads images	No	No
Model ID	meta-llama-3.1-70b-instruct-turbo	meta-llama-3.1-8b-instruct-turbo

Try both with one key

Same endpoint, same key, both hosted in the USA. Change one word to switch models, in Claude Code, Cursor, Cline or your own code.

Get your API key

# Ask either model the same thing
curl https://fullsendai.com/v1/chat/completions \
  -H "Authorization: Bearer $FULLSEND_API_KEY" \
  -d '{"model": "meta-llama-3.1-70b-instruct-turbo", "messages": [...]}'

# …then swap one word
  -d '{"model": "meta-llama-3.1-8b-instruct-turbo", "messages": [...]}'

Questions

Is Meta Llama 3.1 70B Instruct Turbo or Meta Llama 3.1 8B Instruct Turbo better?

Meta Llama 3.1 70B Instruct Turbo grades 26.8 against 0.0 for Meta Llama 3.1 8B Instruct Turbo, from public benchmarks.

Which is cheaper, Meta Llama 3.1 70B Instruct Turbo or Meta Llama 3.1 8B Instruct Turbo?

Meta Llama 3.1 8B Instruct Turbo: $0.020 in and $0.040 out per million tokens, against $0.40 and $0.40 through FullsendAI.

Which has the larger context window?

Neither: both take 131,072 tokens.

Can I use both with one API key?

Yes, once they launch: both are coming soon, at the prices shown, and both will use the same FullsendAI key.

Model rankings All benchmarks Compare other models

Scores: LMArena (CC BY 4.0), and model makers’ published results where marked v. Prices are FullsendAI’s, per million tokens. Data as of Oct 28, 2026.