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Meta Llama 3.1 70B Instruct Turbo vs Phi 4

Meta Llama 3.1 70B Instruct Turbo grades higher overall (26.8 against 15.5). Phi 4 costs 78% less for the same work.

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

Phi 4

by Microsoft · #66 of 67 overall

Coming soon · price at launch
Context
16K
Input / 1M
$0.070
Output / 1M
$0.14

Better overall

Meta Llama 3.1 70B Instruct Turbo

Grade 26.8 vs 15.5

Cheaper

Phi 4

78% less, $0.087 vs $0.40 blended

Larger context

Meta Llama 3.1 70B Instruct Turbo

128K vs 16K 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 TurboMeta Llama 3.1 70B Instruct Turbo: 1,293
LMArena CodingElo-style rating · LMArena (CC BY 4.0) · Oct 15, 2026
Meta Llama 3.1 70B Instruct TurboMeta Llama 3.1 70B Instruct Turbo: 1,333

Meta Llama 3.1 70B Instruct TurboPhi 4v = 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.

Meta Llama 3.1 70B Instruct Turbo$96.00 /month
Phi 4$19.60 /month

Phi 4 saves you $76.40 a month at this usage, $917 a year.

At a glance

AttributeMeta Llama 3.1 70B Instruct TurboPhi 4
Made byMetaMicrosoft
AvailabilityComing soonComing soon
Overall gradeGood · 26.8Good · 15.5
Overall rank#63 of 67#66 of 67
Input price$0.40 per 1M$0.070 per 1M
Output price$0.40 per 1M$0.14 per 1M
Context window131,072 tokens16,384 tokens
Reasoning levelsNoNo
Reads imagesNoNo
Model IDmeta-llama-3.1-70b-instruct-turbophi-4

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": "phi-4", "messages": [...]}'

Questions

Is Meta Llama 3.1 70B Instruct Turbo or Phi 4 better?

Meta Llama 3.1 70B Instruct Turbo grades 26.8 against 15.5 for Phi 4, from public benchmarks.

Which is cheaper, Meta Llama 3.1 70B Instruct Turbo or Phi 4?

Phi 4: $0.070 in and $0.14 out per million tokens, against $0.40 and $0.40 through FullsendAI.

Which has the larger context window?

Meta Llama 3.1 70B Instruct Turbo, with 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 rankingsAll benchmarksCompare 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.