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Google · Frontier

Gemini 4 Argon

Added Oct 13, 2026

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Use in the app

Google's Gemini 4 Argon is a flagship reasoning model for complex software engineering, mathematical and scientific problem solving, and multi-step agents. It accepts text, images, audio, video, and PDFs, with tool calling and structured outputs. Its 1,048,576-token context is shared across input, thinking, and output; synchronous output is capped at 65,536 tokens.

  • Reasoning
  • Tools
  • Vision
  • Structured output
  • PDF input
  • Audio input
  • Video input
Input
Text, Images, Video, Audio
Output
Text
Reasoning effort
low · medium · high
Discovery tier
Frontier

Pricing

USD per 1M tokens
Input
$2.00
Output
$10.00
Cache read
$0.10
Cache write
$0.19

Reference prices as published by the model provider. API example

Specifications

Context window
1M
Max output
65.5K
Average output (7 days)
1.6K tokens
Longer than 87% of 473 models

Side by side

Gemini 4 Argon compared

Specifications, prices, speed and benchmark scores next to each other. Benchmarks below show every compared model too.

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Gemini 4 ArgonGoogleThis modelClaude Fable 5.1AnthropicRemove
ProviderGoogleAnthropic
Discovery tierFrontierFrontier
AddedOct 13, 2026Sep 1, 2026
Limits
Context window1.05MBest1M
Max output65.54K128KBest
Average output1.6K tokens2.3K tokens
Pricing, USD per 1M tokens
Input$2.00Best$10.00
Output$10.00Best$50.00
Cache read$0.10Best$0.25
Cache write$0.19Best$12.50
Performance
Throughput113.7 tok/s161.9 tok/sBest
Time to first token10.0 sBest10.5 s
Request success (24h)98.5%99.0%Best
Benchmark indexes
Intelligence Index52.653.4Best
Coding Index—81.6
Capabilities
ReasoningYesYes
ToolsYesYes
VisionYesYes
Structured outputYesYes
PDF inputYesYes
Audio inputYesNo
Video inputYesNo
Reasoning effortlow, medium, highlow, medium, high, xhigh, max

Public evaluations

Benchmarks

Independent evaluation results, with how each score ranks among the models in the Noumen catalog.

  • Gemini 4 Argon
  • Claude Fable 5.1

Intelligence Index

  • Gemini 4 Argon52.6
  • Claude Fable 5.153.4

Gemini 4 Argon tested at high reasoning effort

Gemini 4 Argon: Better than 97% of 326 scored models

3.8Catalog models by score55.1

Indexes

  • Coding Index

    Composite of the coding evaluations

    • Gemini 4 Argon: —
    • Claude Fable 5.1: 81.6

Agentic work

  • AutomationBench-AA

    Workflow automation, penalized for guardrail violations

    • Gemini 4 Argon: 77.5%Top
    • Claude Fable 5.1: 59.4%

  • AutomationBench-AA tasks completed

    Workflows finished end to end without a guardrail violation

    • Gemini 4 Argon: 53.1%Top
    • Claude Fable 5.1: 32.1%

  • Harvey LAB-AAv1.1

    Legal tasks passed in full, with no material hallucination

    • Gemini 4 Argon: 3.9%
    • Claude Fable 5.1: 6.4%Top

  • AA-Briefcasev1.1

    Agentic knowledge work, rated head to head

    • Gemini 4 Argon: 1,486 Elo
    • Claude Fable 5.1: 1,671 EloTop

  • GDPval-AAv2.1

    Economically valuable occupational tasks, rated head to head

    • Gemini 4 Argon: 1,624 Elo
    • Claude Fable 5.1: 1,755 EloTop

Document reasoning

  • GDP.pdf

    Professional reasoning over PDF documents, all-pass rate

    • Gemini 4 Argon: 21.8%
    • Claude Fable 5.1: 26.2%Top

  • AA-LCRv1.1

    Reasoning across long documents

    • Gemini 4 Argon: 79.7%
    • Claude Fable 5.1: 85.3%Top

  • MLCR-AA

    Long-context reasoning over medical records

    • Gemini 4 Argon: 13.9%
    • Claude Fable 5.1: 15.6%Top

Reasoning and knowledge

  • Humanity’s Last Exam

    Expert-level questions across academic fields

    • Gemini 4 Argon: 57.1%
    • Claude Fable 5.1: 59.1%Top

  • GPQA Diamond

    Graduate-level science questions

    • Gemini 4 Argon: —
    • Claude Fable 5.1: 93.7%

Coding

  • Terminal-Benchv4.0

    Practical software engineering in a terminal

    • Gemini 4 Argon: 57.1%Top
    • Claude Fable 5.1: 52.0%

  • SciCode

    Scientific computing in Python

    • Gemini 4 Argon: 61.8%
    • Claude Fable 5.1: 63.1%Top

Legacy evaluations

  • AA-LCR (unversioned)

    Long-context reasoning, earlier grading

    • Gemini 4 Argon: 79.7%
    • Claude Fable 5.1: 85.3%Top

Scores from Artificial Analysis, updated Oct 26, 2026. Gemini 4 Argon was tested at high reasoning effort; compare scores measured at the same effort.Artificial Analysis

Live routing data

Performance and reliability

Recent averages across requests routed for this model. Your own speed depends on prompt length, reasoning effort and load.

Throughput
113.7 tok/s
Faster than 67% of 257 models
Time to first token
10.0 s
Quicker than 9% of 257 models
Prompt cache hits
40.9%
About $1.22 per 1M input tokens with caching
Request success (24h)
98.4%
Reliable

Cache hits are the share of input tokens recently served from a prompt cache across all requests. They are not a forecast of your own hit rate.

Hourly request success · last 72 hoursLowest hour 94.1%
  • Healthy (98% or more)
  • Degraded (90–98%)
  • Down (under 90%)
  • No requests

Developers

Use it through the API

Noumen’s API is OpenAI-compatible: any Chat Completions client works with a base URL and a key.

Read the quickstart
curl https://www.noumen.xyz/api/v1/chat/completions \
  -H "Authorization: Bearer $NOUMEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "google/gemini-4-argon",
    "reasoning_effort": "medium",
    "messages": [{ "role": "user", "content": "Explain this stack trace." }]
  }'
import os
from openai import OpenAI

client = OpenAI(base_url="https://www.noumen.xyz/api/v1", api_key=os.environ["NOUMEN_API_KEY"])
reply = client.chat.completions.create(
    model="google/gemini-4-argon",
    messages=[{"role": "user", "content": "Explain this stack trace."}],
)
print(reply.choices[0].message.content)

Google

Other Google models, starting with the same family.