Sources & verification notes

Gemini 4 Argon

• Exact identifier & access

  Identity and lifecycle apply to this exact identifier and serving surface.

  • Gemini 4 Argon ↗Google · provider-authored · checked Oct 20, 2026

• First availability

  Effective Oct 13, 2026. Checked Oct 20, 2026.

  General availability on the Gemini API per the release notes. Google announced the model on September 30, 2026, rolling out first to cyber defenders in its Fairwind Program.

  • Gemini API release notes ↗Google · provider-authored · checked Oct 20, 2026
  • Gemini 4 Argon is now available for developers ↗Google · provider-authored · checked Oct 20, 2026

• Availability status

  Effective date not established; this is an observation. Checked Oct 20, 2026.

  Stable; generally available October 13, 2026.

  • Gemini 4 Argon ↗Google · provider-authored · checked Oct 20, 2026
  • Gemini API release notes ↗Google · provider-authored · checked Oct 20, 2026

• Capabilities & limits

  Effective date not established; this is an observation. Checked Oct 20, 2026.

  The 1,048,576-token limit is shared by input and output. Output defaults to 65,536 tokens on synchronous requests and reaches 1,048,576 with long decode.

  • Gemini 4 Argon ↗Google · provider-authored · checked Oct 20, 2026

• Input price

  Effective Oct 13, 2026. Checked Oct 20, 2026.

  USD per million input tokens, standard tier launch rate through 2026-11-30.

  • Gemini Developer API pricing ↗Google · provider-authored · checked Oct 20, 2026

• Input price

  Effective Dec 1, 2026. Checked Oct 20, 2026.

  USD per million input tokens, standard tier rate from 2026-12-01.

  • Gemini Developer API pricing ↗Google · provider-authored · checked Oct 20, 2026

• Output price

  Effective Oct 13, 2026. Checked Oct 20, 2026.

  USD per million output tokens including thinking, standard tier launch rate through 2026-11-30.

  • Gemini Developer API pricing ↗Google · provider-authored · checked Oct 20, 2026

• Output price

  Effective Dec 1, 2026. Checked Oct 20, 2026.

  USD per million output tokens including thinking, standard tier rate from 2026-12-01.

  • Gemini Developer API pricing ↗Google · provider-authored · checked Oct 20, 2026

• Model card

  Effective date not established; this is an observation. Checked Oct 20, 2026.

  • Gemini 4 Argon model card ↗Google DeepMind · provider-authored · checked Oct 20, 2026
  • Gemini 4 Argon ↗Google · provider-authored · checked Oct 20, 2026

• Official announcement

  Effective Sep 30, 2026. Checked Oct 20, 2026.

  • Gemini 4 Argon: our next era of frontier intelligence ↗Google · provider-authored · checked Oct 20, 2026

• Provider description

  Effective date not established; this is an observation. Checked Oct 20, 2026.

  • Gemini 4 Argon ↗Google · provider-authored · checked Oct 20, 2026

• Provider comparison

  Effective Oct 13, 2026. Checked Oct 20, 2026.

  • Gemini 4 Argon is now available for developers ↗Google · provider-authored · checked Oct 20, 2026

• Full rate card

  Effective Oct 13, 2026. Checked Oct 20, 2026.

  • Gemini Developer API pricing ↗Google · provider-authored · checked Oct 20, 2026

• License

  Effective date not established; this is an observation. Checked Oct 20, 2026.

  Not verified. These sources establish the identifier, not this missing fact.

  • Gemini 4 Argon ↗Google · provider-authored · checked Oct 20, 2026