DeepSeek V4 FlashNVIDIA Nemotron 3 Ultra 550B A55Bv = 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$25.20 /month
NVIDIA Nemotron 3 Ultra 550B A55B$188 /month
DeepSeek V4 Flash saves you $163 a month at this usage, $1,954 a year.
At a glance
Attribute
DeepSeek V4 Flash
NVIDIA Nemotron 3 Ultra 550B A55B
Made by
DeepSeek
NVIDIA
Availability
Coming soon
Coming soon
Overall grade
Excellent · 72.1
Excellent · 72.8
Overall rank
#27 of 67
#26 of 67
Input price
$0.090 per 1M
$0.50 per 1M
Output price
$0.18 per 1M
$2.20 per 1M
Context window
1,048,576 tokens
262,144 tokens
Reasoning levels
No
No
Reads images
No
No
Model ID
deepseek-v4-flash
nvidia-nemotron-3-ultra-550b-a55b
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.
# Ask either model the same thingcurlhttps://fullsendai.com/v1/chat/completions \-H"Authorization: Bearer $FULLSEND_API_KEY" \-d'{"model": "deepseek-v4-flash", "messages": [...]}'# …then swap one word-d'{"model": "nvidia-nemotron-3-ultra-550b-a55b", "messages": [...]}'
Questions
Is DeepSeek V4 Flash or NVIDIA Nemotron 3 Ultra 550B A55B better?
They grade within two points of each other (72.1 and 72.8), so pick on price and the benchmarks that match your work.
Which is cheaper, DeepSeek V4 Flash or NVIDIA Nemotron 3 Ultra 550B A55B?
DeepSeek V4 Flash: $0.090 in and $0.18 out per million tokens, against $0.50 and $2.20 through FullsendAI.
Which has the larger context window?
DeepSeek V4 Flash, 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.
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.
