Gemini 4 Carbon pricing
Google ·
gemini-gemini-4-carbon ·
1.05M context
· 75th cheapest of 89 current models
These are promotional rates, in force until 2026-11-30. The standard rates are $4 in / $20 out per 1M tokens.
Estimate Gemini 4 Carbon for your workload Source and check date
Rates last checked against the vendor’s own published pricing on 2026-11-11.
What Gemini 4 Carbon costs
| Rate | Per 1M tokens | Per 1K tokens | What it covers |
|---|---|---|---|
| Input | $2 (Promotional rate until 2026-11-30 — standard rate $4/M) | $0.002 | Every token you send: prompt, history, documents. |
| Output | $10 (Promotional rate until 2026-11-30 — standard rate $20/M) | $0.01 | Every token the model generates, including hidden reasoning tokens. |
| Cached input | $0.1 (Promotional rate until 2026-11-30 — standard rate $0.2/M) | $0.0001 | Input served from the provider’s prompt cache. |
What that means in practice
The same three workloads are costed on every model page, so these numbers are directly comparable across the catalog. No prompt caching and no batch discount is assumed — the figures are what you pay before you optimize anything.
Support chatbot
2,500 six-turn conversations a day
$8,055 / month
$0.107 per conversation · $96,660 a year
An 800-token system prompt, 400-token questions and 900-token answers, over six turns — each turn re-sending everything before it.
Document summarizer
1,000 single-shot summaries a day
$972 / month
$0.032 per conversation · $11,664 a year
One 12,000-token document in, an 800-token summary out, no conversation history. The case where input dominates the bill.
Coding agent
200 twelve-turn sessions a day
$5,616 / month
$0.936 per conversation · $67,392 a year
A 3,000-token system prompt, 1,500-token instructions and 2,500-token responses over twelve turns. Long sessions are where the quadratic cost of re-sent history stops being theoretical.
Change the assumptions in the calculator
Cheaper models in the catalog
Nothing cheaper is scored as highly as Gemini 4 Carbon, so these are simply the cheaper options, best-scored first. Trading down here is a real trade.
| Model | Input | Output | Blended saving | |
|---|---|---|---|---|
| Claude Sonnet 5.5 | $2 | $10 | 50% | |
| GPT-6.1 Sol | $2 | $10 | 50% | |
| GPT-6 Sol | $2 | $10 | 50% | |
| Kimi K3.1 Pro | $2 | $10 | 50% | |
| GPT-6.1 Terra | $1 | $5 | 75% |
Specification
| Context window | 1.05M tokens |
|---|---|
| Maximum output | 1.05M tokens |
| Provider | |
| Status | Current |
| Reasoning model | Yes |
| Vision | Yes |
| Token counting | Estimated at ~4 characters per token (Estimate — Gemini's tokenizer is server-side) |
Price history
PromptSpend has recorded Gemini 4 Carbon since 2026-11-10. Tracking began on 2026-08-02, so anything the vendor did before then is not on record here.
| Date | Rate | Was | Now | What happened |
|---|---|---|---|---|
| 2026-11-11 | Input | $2 | $4 | PromptSpend corrected a misreading; the vendor’s rate did not move |
| 2026-11-11 | Output | $10 | $20 | PromptSpend corrected a misreading; the vendor’s rate did not move |
| 2026-11-11 | Cached input | $0.1 | $0.2 | PromptSpend corrected a misreading; the vendor’s rate did not move |
Every row, with the commit that published it, is in the price-history dataset; price news is also available as an Atom feed.
Where these numbers come from
Last checked against its source on 2026-11-11. Source of record: the vendor’s own published pricing.
The vendor page a human checked
Regional and data-residency premiums, priority tiers, server-side tool fees and negotiated discounts are not included. Prices change without notice; this page is rebuilt every time the catalog does.
Common questions
How much does Gemini 4 Carbon cost?
Gemini 4 Carbon costs $2 per 1M input tokens and $10 per 1M output tokens at the standard tier, as last checked against the vendor’s own published pricing on 2026-11-11. These are promotional rates, in force until 2026-11-30; the standard rates are $4 in and $20 out.
How much does Gemini 4 Carbon cost to run for a month?
On PromptSpend's three standard workloads, Gemini 4 Carbon costs about $8,055 for a support chatbot, $972 for a document summarizer and $5,616 for a coding agent each month. No prompt caching and no batch discount is assumed, and the same workloads are costed on every model page, so the figures compare directly.
Is there a cheaper alternative to Gemini 4 Carbon?
Yes, though none is scored as highly. The cheaper options, best-scored first, include Claude Sonnet 5.5 ($2 in, $10 out), GPT-6.1 Sol ($2 in, $10 out) and GPT-6 Sol ($2 in, $10 out), so trading down is a real trade.
How large is the context window of Gemini 4 Carbon?
Gemini 4 Carbon accepts up to 1.05M tokens of context and can produce up to 1.05M tokens of output.
Has the price of Gemini 4 Carbon changed?
No vendor change is on record. PromptSpend has recorded Gemini 4 Carbon since 2026-11-10 and none of its rates has moved, apart from 3 corrections of PromptSpend's own reading of a page. PromptSpend began tracking prices on 2026-08-02, so earlier changes are not on record.
Where do the prices for Gemini 4 Carbon come from?
They come from the vendor’s own published pricing and were last checked on 2026-11-11. Regional and data-residency premiums, priority tiers, server-side tool fees and negotiated discounts are not included.