Gemini 4 Carbon API
Google DeepMind's strongest model, built for long-horizon engineering and cybersecurity defense, #1 on the Artificial Analysis Intelligence Index v5.0. Coming to the API at Argon's introductory price.
Model spec
- Input
- $2.00per 1M · at launch
- Output
- $10.00per 1M · at launch
- Cached input
- $0.10per 1M · at launch
Model ID
OpenAI-compatible · api.companyfabric.com/v1
Overview
About Gemini 4 Carbon
Google DeepMind's strongest model, built for long-horizon engineering and cybersecurity defense, #1 on the Artificial Analysis Intelligence Index v5.0. Coming to the API at Argon's introductory price. Every model on CompanyFabric shares the same API key, billing balance, and rate-limit envelope, one integration covers the entire library.
Facts
At a glance
Availability
Announced
API pending, this page tracks it
Pricing
$2.00 in · $10.00 out
Announced price, not billable yet
Capabilities
tools, vision
Commercial use
See license
Not yet on the Gemini API: Google is rolling it out to cyber defenders and trusted partners (Fairwind Program) first. API terms will follow Gemini API paid-tier terms.
Variants
All endpoints
Gemini 4 Carbon
Coming soon$2/Mtok inGoogle DeepMind's strongest model, built for long-horizon engineering and cybersecurity defense, #1 on the Artificial Analysis Intelligence Index v5.0. Coming to the API at Argon's introductory price.
Chat Completions
Gemini 4 Argon
$2/Mtok inGoogle DeepMind's frontier model for long-horizon coding, legal, finance and science work, #1 on the Vals Index at launch. Introductory price until 30 November.
Chat Completions
Gemini 3.7 Flash
$0.75/Mtok inGoogle's current fast model, million-token context.
Chat Completions
Gemini 3.5 Flash
Retired$1.5/Mtok inThe previous stable Flash, still current for most work.
Chat Completions
Gemini 2.5 Pro
Retired$1.25/Mtok inGoogle's stable Pro tier, the non-preview reasoning model.
Chat Completions
Gemini 2.5 Flash
Retired$0.3/Mtok inLong-context workhorse on the stable 2.5 line.
Chat Completions
Gemini 3.1 Pro (preview)
Preview$2/Mtok inGoogle's newest Pro tier, shipped as a preview.
Chat Completions
Gemini 3 Flash (preview)
Preview$0.5/Mtok inThe Gemini 3 Flash preview line.
Chat Completions
Gemini 3.8 Flash
$0.75/Mtok inGoogle's most capable Flash model, built for long-horizon software engineering and autonomous agents.
Chat Completions
Gemini 3.6 Flash
$0.75/Mtok inThe previous-generation Flash, balancing speed and multimodal work across everyday agentic tasks.
Chat Completions
Gemini 3.5 Flash-Lite
$0.3/Mtok inCost-efficient Gemini for high-volume agentic work, translation and simple data processing.
Chat Completions
Gemini 3.1 Flash-Lite
$0.25/Mtok inGoogle's cheapest text model here, for high-volume classification and extraction.
Chat Completions
Quickstart
How to use the Gemini 4 Carbon API
- 1
Create a free CompanyFabric account, starter credits are included, no card required.
- 2
Copy your API key from the dashboard. One key covers every model in the library.
- 3
Point any OpenAI SDK at api.companyfabric.com/v1 and set model to "google/gemini-4-carbon".
- 4
Read the exact metered cost of the call from the response, the same number shown in the playground.
Use cases
What teams build with it
Agents & copilots
Drive agent loops, tool calls, and user-facing assistants over the OpenAI-compatible endpoint.
agentstool useassistants
Content pipelines
Summarization, rewriting, and structured generation at metered per-token cost.
contentsummarization
Extraction & classification
Turn unstructured input into typed JSON with schema-constrained output.
extractionjson mode
Get better output
Prompting tips
- State the output format before the task, models follow contracts declared early.
- Few-shot beats description: two worked examples outperform a paragraph of rules.
- Cap output length explicitly when cost matters; output tokens dominate most bills.
Exact, metered, prepaid
Gemini 4 Carbon pricing
Gemini 4 Carbon pricing is per token: $2 / M input · $10 / M output · $0.1 / M cached input. Output tokens cost 5× input tokens, so long generations, not long prompts, are what actually drive most bills. A typical call with a 2k-token prompt and a 1k-token answer costs about $0.0140.
Every call is metered exactly and attributed to your key, the dashboard, the API usage response, and your invoice all read from the same ledger row. Cap any key's monthly spend with a budget cap, and bring your own provider key (BYOK) at 0% platform fee if you already have a direct contract.
| Endpoint | Type | Price |
|---|---|---|
| Gemini 4 Carbon | Chat | $2 / M input · $10 / M output · $0.1 / M cached input |
| Gemini 4 Argon | Chat | $2 / M input · $10 / M output · $0.1 / M cached input |
| Gemini 3.7 Flash | Chat | $0.75 / M input · $3.75 / M output |
| Gemini 3.5 Flash | Chat | $1.5 / M input · $9 / M output |
| Gemini 2.5 Pro | Chat | $1.25 / M input · $10 / M output |
| Gemini 2.5 Flash | Chat | $0.3 / M input · $2.5 / M output |
| Gemini 3.1 Pro (preview) | Chat | $2 / M input · $12 / M output |
| Gemini 3 Flash (preview) | Chat | $0.5 / M input · $3 / M output |
| Gemini 3.8 Flash | Chat | $0.75 / M input · $3.75 / M output |
| Gemini 3.6 Flash | Chat | $0.75 / M input · $3.75 / M output |
| Gemini 3.5 Flash-Lite | Chat | $0.3 / M input · $2.5 / M output |
| Gemini 3.1 Flash-Lite | Chat | $0.25 / M input · $1.5 / M output |
Gemini 4 Carbon is not billable yet: its row shows the provider's announced price, or that none has been announced.
Comparisons
Gemini 4 Carbon vs the alternatives
Gemini 4 Carbon vs Claude Fable 5.1
Gemini 4 Carbon and Claude Fable 5.1 compete for the same text workloads. Both run behind the same CompanyFabric key at exact metered prices, A/B them on your real prompts and let the outputs decide, then switch with a one-line change.
Full comparison: Gemini 4 Carbon vs Claude Fable 5.1 →Gemini 4 Carbon vs Claude Opus 5.5
Gemini 4 Carbon and Claude Opus 5.5 compete for the same text workloads. Both run behind the same CompanyFabric key at exact metered prices, A/B them on your real prompts and let the outputs decide, then switch with a one-line change.
Full comparison: Gemini 4 Carbon vs Claude Opus 5.5 →Gemini 4 Carbon vs GPT-6 Astra
Gemini 4 Carbon and GPT-6 Astra compete for the same text workloads. Both run behind the same CompanyFabric key at exact metered prices, A/B them on your real prompts and let the outputs decide, then switch with a one-line change.
Full comparison: Gemini 4 Carbon vs GPT-6 Astra →Compare
Gemini 4 Carbon head to head
FAQ
Frequently asked questions
Is there a Gemini 4 Carbon API?
Not yet, Gemini 4 Carbon is announced but API access is not public. This page tracks availability and updates the moment access ships. Until then, Gemini 4 Argon is the closest live model and runs today with the same key.
When will the Gemini 4 Carbon API launch?
Google has not committed to a public date. Create a free key now and you can call Gemini 4 Carbon on day one, no waitlist, same endpoint.
Why use Gemini 4 Carbon on CompanyFabric instead of going direct?
One key, one prepaid balance, and one rate-limit envelope across the whole library, at pricing at parity with or below the direct API. Model switching is a one-line change, and BYOK routing is 0% fee.
Is the API OpenAI-compatible?
Yes, point any OpenAI SDK at api.companyfabric.com/v1 and set model to "google/gemini-4-carbon".
Can I use the output commercially?
Not yet on the Gemini API: Google is rolling it out to cyber defenders and trusted partners (Fairwind Program) first. API terms will follow Gemini API paid-tier terms.
How does billing work?
Prepaid credits via card, or BYOK with your own provider keys at 0% platform fee. No subscription required; balances never expire.
Provider
About Google
Google publishes the gemini family. Also in this family: Gemini 4 Argon, Gemini 3.7 Flash, Gemini 3.5 Flash, Gemini 2.5 Pro, Gemini 2.5 Flash, Gemini 3.1 Pro (preview), Gemini 3 Flash (preview), Gemini 3.8 Flash, Gemini 3.6 Flash, Gemini 3.5 Flash-Lite, Gemini 3.1 Flash-Lite. License: Not yet on the Gemini API: Google is rolling it out to cyber defenders and trusted partners (Fairwind Program) first. API terms will follow Gemini API paid-tier terms.
One key. Every model. Exact prices.
Get a key now and call Gemini 4 Carbon the day it ships, Gemini 4 Argon runs today. Free starter credits included, no subscription required.