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GoogleReleased 2026-10-29

Gemini 4 Argon

Gemini 4 Argon is Google's current frontier model, released October 29, 2026 alongside Gemini 4 Carbon. Officially priced at $2.00 input / $10.00 output per 1M tokens during the promotional period through November 30, 2026, reverting to $4.00/$20.00 from December 1, 2026. Google's docs confirm Gemini 4 can generate completions up to 1 million tokens in length.

Context
1M tokens
Input
$2/1M
Output
$10/1M
Modalities
textimageaudiovideo
💡 Promotional price through Nov 30, 2026. Standard from Dec 1, 2026: $4.00/$20.00. Cached input $0.10 (promo) / $0.20 (standard). Non-global $2.20/$11.00.

Best For

Long-horizon agentic engineeringHard reasoningMultimodal agent workflows

Strengths

  • Promotional $2.00/$10.00 per 1M — half the standard rate
  • 1M token context window (official)
  • Native text, image, video and audio input
  • Built for sustained agentic and long-horizon engineering tasks
  • Cached input $0.10 during promotional period

Weaknesses

  • Promotional pricing expires Nov 30, 2026 — doubles on Dec 1
  • Non-global regions priced 10% higher
  • Completions over 32K tokens are charged even if the request times out (from Nov 13, 2026)
  • Newer model with a smaller community than GPT-5.6

Related Alternatives

Gemini 3.8 Flash

Much cheaper at $0.75/$3.75 intro pricing

GPT-6.1 Terra

Comparable price at $1.00/$5.00

Frequently Asked Questions

How much does Gemini 4 Argon cost?

Gemini 4 Argon costs $2.00 per 1M input tokens and $10.00 per 1M output tokens during the promotional period through November 30, 2026, with cached input at $0.10. From December 1, 2026 the standard rate of $4.00/$20.00 applies.

What is Gemini 4 Argon's context window?

Google's official documentation states Gemini 4 can generate completions up to 1 million tokens in length. From November 13, 2026, completions exceeding 32K tokens are charged for retrievable token usage even if the request ultimately fails due to timeout.

How does Gemini 4 Argon compare to GPT-6.1 Terra?

At promotional pricing ($2/$10 vs $1/$5) both are strong agentic models. Gemini 4 Argon offers 1M context with native audio/video input, while GPT-6.1 Terra is cheaper on output and pairs with the broader OpenAI tooling ecosystem.

See Gemini 4 Argon's full record in our database

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