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DeepSeek V3 vs NVIDIA Nemotron 3.5 Lightning

NVIDIA Nemotron 3.5 Lightning grades higher overall (50.7 against 47.5). NVIDIA Nemotron 3.5 Lightning costs 82% less for the same work.

DeepSeek V3

by DeepSeek · #51 of 67 overall

Coming soon · price at launch
Context
160K
Input / 1M
$0.32
Output / 1M
$0.89

NVIDIA Nemotron 3.5 Lightning

by NVIDIA · #47 of 67 overall

Coming soon · price at launch
Context
256K
Input / 1M
$0.060
Output / 1M
$0.16

Better overall

NVIDIA Nemotron 3.5 Lightning

Grade 47.5 vs 50.7

Cheaper

NVIDIA Nemotron 3.5 Lightning

82% less, $0.085 vs $0.46 blended

Larger context

NVIDIA Nemotron 3.5 Lightning

160K vs 256K tokens

SWE-bench Verified

NVIDIA Nemotron 3.5 Lightning

42% vs 51.6%

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 V3DeepSeek V3: 1,358
NVIDIA Nemotron 3.5 LightningNVIDIA Nemotron 3.5 Lightning: 1,351
LMArena CodingElo-style rating · LMArena (CC BY 4.0) · Oct 15, 2026
DeepSeek V3DeepSeek V3: 1,387
NVIDIA Nemotron 3.5 LightningNVIDIA Nemotron 3.5 Lightning: 1,425
Aider Polyglot% of exercises solved · Aider (aider.chat) · Dec 25, 2024
DeepSeek V3DeepSeek V3: 48.4%
NVIDIA Nemotron 3.5 LightningNVIDIA Nemotron 3.5 Lightning: —
SWE-bench Verified% of issues resolved · SWE-bench · Aug 11, 2026 · reference
DeepSeek V3DeepSeek V3: 42%v
NVIDIA Nemotron 3.5 LightningNVIDIA Nemotron 3.5 Lightning: 51.6%v
Terminal-Bench 2.1% of tasks passed · Terminal-Bench · Aug 11, 2026 · reference
DeepSeek V3DeepSeek V3: —
NVIDIA Nemotron 3.5 LightningNVIDIA Nemotron 3.5 Lightning: 24.6%v
LiveCodeBenchpass@1, % · LiveCodeBench · Dec 25, 2024 · reference
DeepSeek V3DeepSeek V3: 40.5%v
NVIDIA Nemotron 3.5 LightningNVIDIA Nemotron 3.5 Lightning: —

DeepSeek V3NVIDIA Nemotron 3.5 Lightningv = 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 V3$99.60 /month
NVIDIA Nemotron 3.5 Lightning$18.40 /month

NVIDIA Nemotron 3.5 Lightning saves you $81.20 a month at this usage, $974 a year.

At a glance

AttributeDeepSeek V3NVIDIA Nemotron 3.5 Lightning
Made byDeepSeekNVIDIA
AvailabilityComing soonComing soon
Overall gradeGood · 47.5Good · 50.7
Overall rank#51 of 67#47 of 67
Input price$0.32 per 1M$0.060 per 1M
Output price$0.89 per 1M$0.16 per 1M
Context window163,840 tokens262,144 tokens
Reasoning levelsNoNo
Reads imagesNoNo
Model IDdeepseek-v3nvidia-nemotron-3.5-lightning

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-v3", "messages": [...]}'

# …then swap one word
  -d '{"model": "nvidia-nemotron-3.5-lightning", "messages": [...]}'

Questions

Is DeepSeek V3 or NVIDIA Nemotron 3.5 Lightning better?

NVIDIA Nemotron 3.5 Lightning grades 50.7 against 47.5 for DeepSeek V3, from public benchmarks.

Which is cheaper, DeepSeek V3 or NVIDIA Nemotron 3.5 Lightning?

NVIDIA Nemotron 3.5 Lightning: $0.060 in and $0.16 out per million tokens, against $0.32 and $0.89 through FullsendAI.

Which has the larger context window?

NVIDIA Nemotron 3.5 Lightning, with 262,144 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), Aider (aider.chat), SWE-bench, Terminal-Bench, LiveCodeBench, and model makers’ published results where marked v. Prices are FullsendAI’s, per million tokens. Data as of Oct 28, 2026.