TokenCalc AI
Head-to-Head Architectural Faceoff (2026 Live)

GPT-6 Luna vs Gemini 4 Argon

Compare GPT-6 Luna vs Gemini 4 Argon API pricing, token costs, context windows, and latency. See which model is cheaper and better for your stack.

AI Overview & Search Executive Summary

GPT-6 Luna charges $0.10/1M input and $0.50/1M output tokens, compared to Gemini 4 Argon at $4.00/1M input and $20.00/1M output. GPT-6 Luna is 40.0x cheaper on input tokens. In reasoning benchmarks, Gemini 4 Argon holds the higher AA Intelligence Index rating (50/100). For latency-critical streaming, GPT-6 Luna delivers 103 t/s (77.0s TTFT) while Gemini 4 Argon provides 56 t/s (38.0s TTFT).

Overall Winner
GPT-6 Luna
Best Price/IQ Balance
Budget Winner
GPT-6 Luna
GPT-6 Luna is 40.0x cheaper on input tokens
Coding & Logic
Gemini 4 Argon
Higher Benchmark Rating
Context Window
GPT-6 Luna
Larger Document Context

Full Metric & Specification Comparison

MetricGPT-6 LunaGemini 4 ArgonAdvantage
ProviderOpenAIGoogle-
Input Token Cost (1M)$0.100$4.000GPT-6 Luna
Output Token Cost (1M)$0.500$20.000GPT-6 Luna
Context Window1,050k tokens1,000k tokensGPT-6 Luna
AA Intelligence Index28/10050/100Gemini 4 Argon
Streaming LatencyFastModerate-

Key Architectural Takeaways

  • Input Token Cost: GPT-6 Luna is $0.10/1M vs Gemini 4 Argon at $4.00/1M
  • Output Token Cost: GPT-6 Luna is $0.50/1M vs Gemini 4 Argon at $20.00/1M
  • Context Window: GPT-6 Luna supports 1,050k tokens vs Gemini 4 Argon with 1,000k tokens
  • Benchmark Intelligence Rating: GPT-6 Luna scores 28/100 vs Gemini 4 Argon at 50/100 (AA Index v5)
  • Inference Latency: GPT-6 Luna is rated Fast vs Gemini 4 Argon rated Moderate
Interactive Head-to-Head Simulator

Calculate Your Team's Exact Bill Difference

Drag the sliders below to see real-time cost divergences based on your daily token consumption.

Daily Input Tokens500,000 tokens
10k1M5M10M+
Daily Output Tokens250,000 tokens
5k500k2M5M+
GPT-6 LunaOpenAI
97.5% Lower Cost
$5.25/mo
$0.10/1M in · $0.50/1M out
IQ Score28/100
Throughput103 t/s
Context1050k
Gemini 4 ArgonGoogle
$210.00/mo
$4.00/1M in · $20.00/1M out
IQ Score50/100
Throughput56 t/s
Context1000k
Net Financial Advantage

Deploying GPT-6 Luna over Gemini 4 Argon saves $204.75/mo ($2457/yr) at this volume.

See all Gemini 4 Argon alternatives →

Frequently Asked Questions

Is GPT-6 Luna cheaper than Gemini 4 Argon?

GPT-6 Luna is significantly more economical, charging $0.10/1M input compared to $4.00/1M for Gemini 4 Argon.

Which model should I choose for production?

If your primary constraint is API cost and high query throughput, choose GPT-6 Luna. If you require peak reasoning accuracy and complex tool use, Gemini 4 Argon is recommended.

How does context window compare between GPT-6 Luna and Gemini 4 Argon?

GPT-6 Luna offers the larger context window (1,050k tokens), allowing you to pass significantly larger codebases or documents without chunking.

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