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Gemini 4 Carbon

Second on Artificial Analysis's index (60 against the leader's 65) at a quarter of the leader's list price, but only until 30 November, when Google doubles it.

Updated Nov 12, 2026 · kept by WrenJSON

Key facts

Score
75 / 100, rank #1
Tests92Price38Peoplen/aFit100
Price
$2 to read · $10 to write, per 1M tokens (Google: Gemini 4 Carbon is now available)
Typical mix
$4 per 1M tokens (three parts reading to one part writing)
Reads at once
1M tokens (about 750,000 words)
Where you can get it
Gemini Enterprise Agent Platform (Google Cloud), Google AI Studio, Gemini for business, Gemini app (Google AI Ultra)
Host it yourself
No
Released
Nov 10, 2026
Best for
Reading and comparing large sets of dense documents, Legal and finance analysis, Multi-step research

Gemini 4 Carbon costs $2 per million tokens it reads (input) and $10 per million tokens it writes (output) on Google's list price (Google: Gemini 4 Carbon is now available, read Nov 12, 2026). A token is about three-quarters of a word. See what every model costs for the same job.

Independent tests

TestResultWho ran itRead
Artificial Analysis Intelligence Index (high)60Artificial Analysis LLM leaderboardNov 12, 2026

What a job costs

The cost of doing each job 1,000 times on Gemini 4 Carbon, worked out from Google’s list price and a fixed size for each job. A product built on the model charges its own price on top.

1,000 of theseWhat one job meansCost
Support repliesthe customer message, the account notes and two help articles read; a 300-word reply written$10
Documents processeda two-page invoice or form read; the fields pulled out$7
Calls summariseda 40-minute call transcript read; a summary and next steps written$26
Contracts revieweda 40-page contract read against a checklist; a memo of issues written$75
Drafts writtena brief and one example read; a 600-word email or proposal section written$11

What people running it say

On the Hacker News (a developer forum) thread about Google's launch, several commenters on the Pro and Plus plans say Carbon shows in the app as Ultra-only, one says their company's enterprise account cannot use it yet, and another says their workplace already finds Argon too expensive. None of this is verified, and it is too little to score.

Caveats

  • The $2 in / $10 out per million tokens (the unit vendors bill by) is introductory; Google says $4 / $20 applies after 30 November 2026, which will lower its score here.
  • Google says it uses more text per task than Gemini 4 Argon, so the bill can run higher at the same list price.
  • One independent test so far. The rankings quoted in Google's launch post are relayed by Google and not counted.
  • In the Gemini app it is for Google AI Ultra subscribers only, per Google; commenters on lower plans and one enterprise account report they cannot select it yet.

Questions people ask

How much does Gemini 4 Carbon cost?

Gemini 4 Carbon costs $2 per million tokens it reads (input) and $10 per million tokens it writes (output) on Google's list price (Google: Gemini 4 Carbon is now available, read Nov 12, 2026). A token is about three-quarters of a word.

What does Gemini 4 Carbon cost for 1,000 support replies?

About $10 at Google's list price, counting one reply as the customer message, the account notes and two help articles read; a 300-word reply written. On the same basis: $7 for 1,000 documents processed, $26 for 1,000 calls summarised, $75 for 1,000 contracts reviewed, $11 for 1,000 drafts written. A product built on Gemini 4 Carbon charges its own price on top.

How good is Gemini 4 Carbon?

Gemini 4 Carbon ranks #1 of 33 on the Models at Work leaderboard with a score of 75 out of 100 (November 2026 edition). Second on Artificial Analysis's index (60 against the leader's 65) at a quarter of the leader's list price, but only until 30 November, when Google doubles it.

What is Gemini 4 Carbon best for?

Gemini 4 Carbon is best for reading and comparing large sets of dense documents, legal and finance analysis, multi-step research.

How does Gemini 4 Carbon do on independent tests?

Artificial Analysis Intelligence Index (high): 60 (Artificial Analysis LLM leaderboard).

How much can Gemini 4 Carbon read at once?

Gemini 4 Carbon can take in 1M tokens (about 750,000 words) in one go, according to Google. Vendors call this the context window.

Where can a business get Gemini 4 Carbon?

Gemini 4 Carbon is available through Gemini Enterprise Agent Platform (Google Cloud), Google AI Studio, Gemini for business, Gemini app (Google AI Ultra).

Can a company host Gemini 4 Carbon itself?

No. Gemini 4 Carbon is not released for self-hosting; it is available through Google and the products and clouds that carry it.

Compare Gemini 4 Carbon

How the score works: Score is 0 to 100 and computed, not typed. 40% is independent testing (Artificial Analysis, Arena, Scale, Epoch, Vals and others; each test is scaled against the best score on this board, and tests of real work, such as finished freelance projects or professional tasks, count double the exams). 30% is price: the vendor's list price for a typical mix of reading and writing, on a fixed scale from $0.05 to $60 per million tokens, so a model that costs a fifth as much gains real ground. 15% is what people report after running it, from Signals and linked threads. 15% is fit: how much text it can take in at once and where a business can get it (the products and clouds that carry it), with a small credit for open weights. A missing component drops out and the rest are reweighted. A model with no independent test yet is provisional and ranks below every measured one. Within three points is a tie. Vendor-published figures are labelled and never counted.