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DeepSeek V4 Flash 0731 vs Meta Llama 3.1 8B Instruct Turbo

Meta Llama 3.1 8B Instruct Turbo has the stronger public benchmark scores. Meta Llama 3.1 8B Instruct Turbo costs 72% less for the same work.

DeepSeek V4 Flash 0731

by DeepSeek

Coming soon · price at launch
Context
1M
Input / 1M
$0.060
Output / 1M
$0.18

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 8B Instruct Turbo

Grade — vs 0.0

Cheaper

Meta Llama 3.1 8B Instruct Turbo

72% less, $0.025 vs $0.090 blended

Larger context

DeepSeek V4 Flash 0731

1M 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
DeepSeek V4 Flash 0731DeepSeek V4 Flash 0731: —
Meta Llama 3.1 8B Instruct TurboMeta Llama 3.1 8B Instruct Turbo: 1,211
LMArena CodingElo-style rating · LMArena (CC BY 4.0) · Oct 15, 2026
DeepSeek V4 Flash 0731DeepSeek V4 Flash 0731: —
Meta Llama 3.1 8B Instruct TurboMeta Llama 3.1 8B Instruct Turbo: 1,260
Terminal-Bench 2.1% of tasks passed · Terminal-Bench · Jul 31, 2026 · reference
DeepSeek V4 Flash 0731DeepSeek V4 Flash 0731: 82.7%v
Meta Llama 3.1 8B Instruct TurboMeta Llama 3.1 8B Instruct Turbo: —

DeepSeek V4 Flash 0731Meta 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.

DeepSeek V4 Flash 0731$19.20 /month
Meta Llama 3.1 8B Instruct Turbo$5.60 /month

Meta Llama 3.1 8B Instruct Turbo saves you $13.60 a month at this usage, $163 a year.

At a glance

AttributeDeepSeek V4 Flash 0731Meta Llama 3.1 8B Instruct Turbo
Made byDeepSeekMeta
AvailabilityComing soonComing soon
Overall gradeNot ratedGood · 0.0
Overall rankNot ranked#67 of 67
Input price$0.060 per 1M$0.020 per 1M
Output price$0.18 per 1M$0.040 per 1M
Context window1,048,576 tokens131,072 tokens
Reasoning levelsNoNo
Reads imagesNoNo
Model IDdeepseek-v4-flash-0731meta-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": "deepseek-v4-flash-0731", "messages": [...]}'

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

Questions

Is DeepSeek V4 Flash 0731 or Meta Llama 3.1 8B Instruct Turbo better?

One of them doesn’t have enough public benchmark scores to be graded yet; compare the benchmarks both have above.

Which is cheaper, DeepSeek V4 Flash 0731 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 $0.060 and $0.18 through FullsendAI.

Which has the larger context window?

DeepSeek V4 Flash 0731, with 1,048,576 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 rankingsAll benchmarksCompare other models

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