Short answer: Google announced Gemini 3 Deep Think API access for select researchers, engineers, and enterprises through an early-access program on February 12, 2026. That announcement does not provide a public model ID, request example, or production terms. The official information reviewed here does not confirm whether that early-access program is still accepting applicants or establish a public Deep Think integration. (Google’s announcement)
Google described a separate route for Google AI Ultra subscribers to use Deep Think in the Gemini app. That app access is not evidence that an Ultra subscription grants API access. (Google’s announcement)
Is Gemini Deep Think available through an API?
Google announced selective API early access on February 12, 2026, for researchers, engineers, and enterprises. Its announcement links to an option to express interest, but does not specify eligibility criteria, approval steps, account or regional requirements, or whether the program is currently open. Treat that link as an announcement-linked next step—not confirmation that applications are being accepted now. (Google’s announcement)
The announcement does not establish whether access to the later Gemini 3.1 Deep Think product uses the same API program. If your organization needs Deep Think specifically, check with Google for current access status and the applicable terms before planning an integration.
Is there a public Deep Think API integration to copy?
The official information reviewed here does not establish a reproducible, public Deep Think-specific API request. The announcement confirms the selective early-access route but does not document a model or capability identifier, request format, or code example. Google’s documentation for other Gemini API models or reasoning controls should not be treated as evidence that they provide Deep Think or are equivalent to it. (Google’s announcement; Gemini API thinking guide)
If Google grants your organization access, use the integration instructions provided for that program. The public materials cited here are not enough to build a Deep Think-specific request.
Need a documented Gemini reasoning API instead?
If you need a documented reasoning-model API rather than Deep Think specifically, Google lists Gemini 4 Argon (gemini-4-argon) as available through the Gemini API. Google’s release notes mark Argon generally available on October 13, 2026. This is a separate model—not a Deep Think substitute or equivalent established by the cited documentation. (Argon API guide; Gemini API release notes)
Google’s Argon quickstart shows this Python request using the Google GenAI SDK and Interactions API. Configure Gemini API authentication as described in Google’s API-key documentation before running it. (Argon API guide; API-key documentation)
from google import genai
client = genai.Client()
interaction = client.interactions.create(
model="gemini-4-argon",
input="Compare these two designs and identify the main engineering trade-offs.",
)
print(interaction.output_text)
This calls Gemini 4 Argon, not Deep Think. Evaluate it against your own workload and requirements; its availability does not establish Deep Think access or production terms for Deep Think. (Argon API guide)
Is Deep Think suitable for production?
The cited public announcement does not establish whether Deep Think early access is suitable for production or what terms apply. It calls the API route early access but does not specify production permissions, service commitments, limits, or restrictions. Ask Google for the terms that apply to your organization before making a production commitment. (Google’s announcement)
For a practical next step:
- You specifically need Deep Think: the February 12 announcement links to an early-access interest option. Its present availability and acceptance conditions are unconfirmed in the materials reviewed here; seek current confirmation from Google.
- You need a documented reasoning-model API: evaluate Gemini 4 Argon separately. Google marks it generally available, but it is not documented here as Deep Think.
Bottom line: Google announced selective Gemini API early access for Deep Think, but the reviewed public materials do not confirm its current status or provide a reproducible public integration. For a documented API request, Gemini 4 Argon is a separate option; do not label it Deep Think. (Google’s announcement; Gemini API release notes)
Sources
Gemini 3 Deep Think: Advancing science, research and engineering — Google
What's new in Gemini 4 Argon — Google AI for Developers