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NVIDIA

Nemotron 3 Ultra (550B-A55B)

FTI
10–15

5 sources, 2 independent of the vendor: centre 12; the sources disagree widely, so shown as a band.

how FTI is computed

5 sources · between #31 and #48 of the 72 with an FTI score
Context1Mtokens
Imagesnoimage input
Free now2 of 4channels
Tested by us4 of 4channels measured

Where it's free now 4 channels tracked

OpenRouter live
no end announced
free since Jun 2026
works · Oct 7
Checked Oct 27 · catalogue
Kilo Code live
no end announced
free since Jun 4
works · Oct 2010 parallel
Checked Oct 27 · catalogue
Cline ended
ended 23 days ago
Oct 11
works · Oct 7
Checked Oct 11 · API call
OpenCode Zen ended
ended 21 days ago
Oct 13
works · Oct 6per-IP limit
Checked Oct 13 · catalogue

Free periods one bar per channel; markers are events

free so farpast announced endofficial end aheadinferred end aheadno end announcedended / not answering● event · ◆ end announced · tap one to see it

What happened newest first · times link to the source

Tue, Oct 1321 days ago
endedNemotron 3 Ultra (550B-A55B) · OpenCode Zenended
opencode/nemotron-3-ultra-free no longer in the Zen model list
Source: own check of opencode.ai/zen/v1/models
Sun, Oct 1123 days ago
endedDots3-Note Preview · Clineended North Mini Code · Clineended Ling 3.0 Flash Sante · Clineended Nemotron 3 Nano Omni 30B A3B (reasoning) · Clineended Nemotron 3 Super · Clineended Nemotron 3 Ultra (550B-A55B) · Clineended Nemotron 3.5 Lightning · Clineended Laguna S 2.1 · Clineended Laguna XS 2.1 · Clineended LFM 2.5 2.6B · Clineended Apodex 1.1 Mini · Clineended Gemma 4 26B A4B · Clineended Gemma 4 31B · Clineended Inkling Small · Clineended Inkling · Clineended Kimi K3 · Clineended
Cline free promotion ended: API returns "Free model promotion ended"; models removed from Cline recommended models catalogue
Source: Cline API and CLI check
Tue, Oct 628 days ago
became availableDots3-Note Preview · Kilo Codelive Laguna S 2.1 · Kilo Codeended Ling 3.1 Flash · Kilo Codeended Nemotron 3 Super · Kilo Codenot answering Nemotron 3 Ultra (550B-A55B) · Kilo Codelive Apodex 1.1 Mini · Kilo Codeended North Mini Code · Kilo Codelive Ling 3.0 Flash Sante · Kilo Codeended LFM 2.5 2.6B · Kilo Codelive Nemotron 3 Nano Omni 30B A3B (reasoning) · Kilo Codelive Nemotron 3.5 Lightning · Kilo Codelive Laguna XS 2.1 · Kilo Codeended Step 3.7 Flash · Kilo Codeended
Answered a test prompt through the Kilo CLI (7.8.3, roll-call) without signing in
Source: own check
became availableNorth Mini Code · Clineended Ling 3.0 Flash Sante · Clineended Nemotron 3 Nano Omni 30B A3B (reasoning) · Clineended Nemotron 3 Super · Clineended Nemotron 3 Ultra (550B-A55B) · Clineended Nemotron 3.5 Lightning · Clineended Laguna S 2.1 · Clineended Laguna XS 2.1 · Clineended LFM 2.5 2.6B · Clineended
Answered a test prompt in the Cline CLI (3.0.68, signed in, plan mode)
Source: own check
listedNemotron 3 Ultra (550B-A55B) · OpenCode Zenended Ling 3.0 Flash Fin · OpenCode Zenended MiMo V2.5 · OpenCode Zenended JEV 1.13 · OpenCode Zenended Big Pickle · OpenCode Zenlive Muse Spark 1.3 (Contributor) · OpenCode Zenended Muse Spark 1.2 (Contributor) · OpenCode Zenended
In OpenCode Zen's free list (-free models); our test call failed (server error, upstream overload or timeout)
Source: OpenCode Zen docs
Thu, Jun 4
listedNemotron 3 Ultra (550B-A55B) · Kilo Codelive
Added to Kilo's model catalogue as "NVIDIA: Nemotron 3 Ultra (free)" at $0 per token (Kilo's own record date)
Source: Kilo model page
listedNemotron 3 Ultra (550B-A55B) · Clineended
Added to Cline's model list: Nemotron 3 Ultra (550B-A55B)
Source: Cline repo commit
listedNemotron 3 Ultra (550B-A55B) · OpenCode Zenended
Added to the Zen model docs: Nemotron 3 Ultra (550B-A55B)
Source: OpenCode repo commit
Jun 2026
listedNemotron 3 Ultra (550B-A55B) · OpenRouterlive
Listed as free on OpenRouter
Source: OpenRouter · link not recorded

Channel details

OpenRouter live✓ humans✓ agents

Tested by us
works · Oct 7
ⓘchecked Oct 7 · 2 checks
Model ID
nvidia/nemotron-3-ultra-550b-a55b:free
To start
$0 · account Free plan: 50 requests/day
Use it
API · 3 formats
Free condition
OpenRouter account and API key; models marked :free cost $0
Limit (stated)
not checked
Started
Jun 2026
End
no end announced free since Jun 2026
Data policy
may train
Channel type
router
Checked
Oct 27 · catalogue

Kilo Code live✓ humans✓ agents

Tested by us
works · Oct 2010 parallel
ⓘ10-20: single anonymous call answered, cost 0 · checked Oct 20
Model ID
nvidia/nemotron-3-ultra-550b-a55b:free
To start
$0 · no account ":free" models answered in the Kilo CLI without signing in (our test, Oct 6); other models need a Kilo account; non-":free" models answer 401 without sign-in (PAID_MODEL_AUTH_REQUIRED, seen 2026-10-16)
Use it
API · OpenAI chat
Free condition
Kilo account; $0 per token on Kilo's model list
Limit (stated)
not published
Started
Jun 4
End
no end announced free since Jun 4
Data policy
may train
Channel type
agent tool
Checked
Oct 27 · catalogue

Cline ended✕ humans✕ agents

Tested by us
works · Oct 7
ⓘchecked Oct 7
Model ID
nvidia/nemotron-3-ultra-550b-a55b:free
To start
$0 · account Free models need a Cline account and run inside the Cline CLI or IDE extension
Use it
CLI onlyhuman only
Free condition
Cline account, inside the Cline CLI or IDE extension; not through the Cline API
Limit (stated)
not published
Started
Jun 4
End
ended 23 days ago Oct 11
Data policy
may train
Channel type
agent tool
Checked
Oct 11 · API call

OpenCode Zen ended✕ humans✕ agents

Tested by us
works · Oct 6per-IP limit
ⓘchecked Oct 6 · 2 checks · from 2 networks
Model ID
opencode/nemotron-3-ultra-free
To start
$0 · no account Free models run inside the OpenCode app with no account; the Zen API key route needs billing details
Use it
CLI only
Free condition
Inside the OpenCode app, no account; the raw API refuses free models (403 FreeTierError)
Limit (stated)
not published
Started
Jun 4
End
ended 21 days ago Oct 13
Data policy
may train
Channel type
agent tool
Checked
Oct 13 · catalogue