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Claude Opus 5.5 vs NVIDIA Nemotron 3 Super 120B A12B

Claude Opus 5.5 grades higher overall (99.5 against 50.3). NVIDIA Nemotron 3 Super 120B A12B costs 98% less for the same work.

Claude Opus 5.5

by Anthropic · #1 of 67 overall

Coming soon · price at launch
Context
1M
Input / 1M
$4.00
Output / 1M
$20.00

NVIDIA Nemotron 3 Super 120B A12B

by NVIDIA · #48 of 67 overall

Coming soon · price at launch
Context
256K
Input / 1M
$0.075
Output / 1M
$0.40

Better overall

Claude Opus 5.5

Grade 99.5 vs 50.3

Cheaper

NVIDIA Nemotron 3 Super 120B A12B

98% less, $0.16 vs $8.00 blended

Larger context

Claude Opus 5.5

1M vs 256K 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
Claude Opus 5.5Claude Opus 5.5: 1,508
NVIDIA Nemotron 3 Super 120B A12BNVIDIA Nemotron 3 Super 120B A12B: 1,360
LMArena WebDevElo-style rating · LMArena (CC BY 4.0) · Oct 13, 2026
Claude Opus 5.5Claude Opus 5.5: 1,811
NVIDIA Nemotron 3 Super 120B A12BNVIDIA Nemotron 3 Super 120B A12B: —
LMArena CodingElo-style rating · LMArena (CC BY 4.0) · Oct 15, 2026
Claude Opus 5.5Claude Opus 5.5: 1,545
NVIDIA Nemotron 3 Super 120B A12BNVIDIA Nemotron 3 Super 120B A12B: 1,407
SWE-bench Verified% of issues resolved · SWE-bench · Mar 11, 2026 · reference
Claude Opus 5.5Claude Opus 5.5: —
NVIDIA Nemotron 3 Super 120B A12BNVIDIA Nemotron 3 Super 120B A12B: 60.5%v
SWE-Bench Pro% of tasks resolved · Scale AI SWE-Bench Pro · Sep 22, 2026 · reference
Claude Opus 5.5Claude Opus 5.5: 89.9%v
NVIDIA Nemotron 3 Super 120B A12BNVIDIA Nemotron 3 Super 120B A12B: —
Terminal-Bench 4.0% of tasks passed · Terminal-Bench · Sep 22, 2026 · reference
Claude Opus 5.5Claude Opus 5.5: 66.4%v
NVIDIA Nemotron 3 Super 120B A12BNVIDIA Nemotron 3 Super 120B A12B: —
Terminal-Bench 2.1% of tasks passed · Terminal-Bench · Aug 11, 2026 · reference
Claude Opus 5.5Claude Opus 5.5: —
NVIDIA Nemotron 3 Super 120B A12BNVIDIA Nemotron 3 Super 120B A12B: 39.6%v
Terminal-Bench 2.0% of tasks passed · Terminal-Bench · Mar 11, 2026 · reference
Claude Opus 5.5Claude Opus 5.5: —
NVIDIA Nemotron 3 Super 120B A12BNVIDIA Nemotron 3 Super 120B A12B: 31%v

Claude Opus 5.5NVIDIA Nemotron 3 Super 120B A12Bv = 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.

Claude Opus 5.5$1,600 /month
NVIDIA Nemotron 3 Super 120B A12B$31.00 /month

NVIDIA Nemotron 3 Super 120B A12B saves you $1,569 a month at this usage, $18,828 a year.

At a glance

AttributeClaude Opus 5.5NVIDIA Nemotron 3 Super 120B A12B
Made byAnthropicNVIDIA
AvailabilityComing soonComing soon
Overall gradeExcellent · 99.5Good · 50.3
Overall rank#1 of 67#48 of 67
Input price$4.00 per 1M$0.075 per 1M
Output price$20.00 per 1M$0.40 per 1M
Context window1,000,000 tokens262,144 tokens
Reasoning levelsYesNo
Reads imagesYesNo
Model IDclaude-opus-5-5nvidia-nemotron-3-super-120b-a12b

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": "claude-opus-5-5", "messages": [...]}'

# …then swap one word
  -d '{"model": "nvidia-nemotron-3-super-120b-a12b", "messages": [...]}'

Questions

Is Claude Opus 5.5 or NVIDIA Nemotron 3 Super 120B A12B better?

Claude Opus 5.5 grades 99.5 against 50.3 for NVIDIA Nemotron 3 Super 120B A12B, from public benchmarks.

Which is cheaper, Claude Opus 5.5 or NVIDIA Nemotron 3 Super 120B A12B?

NVIDIA Nemotron 3 Super 120B A12B: $0.075 in and $0.40 out per million tokens, against $4.00 and $20.00 through FullsendAI.

Which has the larger context window?

Claude Opus 5.5, with 1,000,000 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.

Compare with others

Model rankingsAll benchmarksCompare other models

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