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Granite 4.2 8B vs Phi 4

Granite 4.2 8B grades higher overall (30.8 against 15.5). Phi 4 costs 19% less for the same work.

Granite 4.2 8B

by IBM · #62 of 67 overall

Coming soon · price at launch
Context
128K
Input / 1M
$0.060
Output / 1M
$0.25

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

Granite 4.2 8B

Grade 30.8 vs 15.5

Cheaper

Phi 4

19% less, $0.087 vs $0.11 blended

Larger context

Granite 4.2 8B

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
LMArena CodingElo-style rating · LMArena (CC BY 4.0) · Oct 15, 2026
SWE-bench Verified% of issues resolved · SWE-bench · Aug 25, 2026 · reference
Phi 4Phi 4: —
SWE-Bench Pro% of tasks resolved · Scale AI SWE-Bench Pro · Aug 25, 2026 · reference
Phi 4Phi 4: —
Terminal-Bench 2.1% of tasks passed · Terminal-Bench · Aug 25, 2026 · reference
Phi 4Phi 4: —
LiveCodeBenchpass@1, % · LiveCodeBench · Aug 7, 2026 · reference
Phi 4Phi 4: —

Granite 4.2 8BPhi 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.

Granite 4.2 8B$22.00 /month
Phi 4$19.60 /month

Phi 4 saves you $2.40 a month at this usage, $28.80 a year.

At a glance

AttributeGranite 4.2 8BPhi 4
Made byIBMMicrosoft
AvailabilityComing soonComing soon
Overall gradeGood · 30.8Good · 15.5
Overall rank#62 of 67#66 of 67
Input price$0.060 per 1M$0.070 per 1M
Output price$0.25 per 1M$0.14 per 1M
Context window131,072 tokens16,384 tokens
Reasoning levelsNoNo
Reads imagesNoNo
Model IDgranite-4.2-8bphi-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": "granite-4.2-8b", "messages": [...]}'

# …then swap one word
  -d '{"model": "phi-4", "messages": [...]}'

Questions

Is Granite 4.2 8B or Phi 4 better?

Granite 4.2 8B grades 30.8 against 15.5 for Phi 4, from public benchmarks.

Which is cheaper, Granite 4.2 8B or Phi 4?

Phi 4: $0.070 in and $0.14 out per million tokens, against $0.060 and $0.25 through FullsendAI.

Which has the larger context window?

Granite 4.2 8B, 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), SWE-bench, Scale AI SWE-Bench Pro, Terminal-Bench, LiveCodeBench, and model makers’ published results where marked v. Prices are FullsendAI’s, per million tokens. Data as of Oct 28, 2026.