Standard Compute
Model comparison 2026

Gemini 4 Argon vs GPT-5.6 Sol

Gemini 4 Argon
Google · Frontier · Proprietary
$4.40/1M · 1.0M ctx
GPT-5.6 Sol
OpenAI · Frontier · Proprietary
$4.40/1M · 1.1M ctx

Community vote

Pick a winner in each dimension. You can change your vote any time.

Output Quality
Correctness and depth of what it produces
Agentic Ability
Tool calls, instruction-following, and multi-step tasks
Speed
Tokens per second and time-to-first-token
Value for money
How much capability you get per dollar
Reliability
Consistent results: fewer refusals, loops and format breaks

Specs and pricing side by side

Spec
Gemini 4 Argon
GPT-5.6 Sol
Maker
Google
OpenAI
Blended price / 1M
$4.40
$4.40
Input / output
$2.00 in · $10 out / 1M tokens
$2.00 in · $10 out / 1M tokens
Context window
1.0M
1.1M
Open weights
No
No
Tool use
Yes
Yes
Reasoning
Yes
Yes
Output Quality
9.3
8.6
Agentic Ability
9.4
7.9
Speed
7.5
7.6
Value for money
5.4
4.6
Reliability
9.2
9.2

Pricing and capabilities synced from the OpenRouter catalogue. Scores are editorial (0–10).

Verdict: Gemini 4 Argon or GPT-5.6 Sol?

Updated 2026-10-13

Choose Gemini 4 Argon if you want hard coding and agent steps where you want a frontier model outside the Claude and GPT families. Choose GPT-5.6 Sol if you want existing GPT-5.6 Sol setups until they move to GPT-6.1 Sol.

In our editorial scoring, Gemini 4 Argon leads in 3 of five dimensions (output quality, agentic ability and value for money), while GPT-5.6 Sol leads in 1. On price, Gemini 4 Argon runs about $4.40 per 1M tokens (blended) and is proprietary; GPT-5.6 Sol is about $4.40 and proprietary.

Where Gemini 4 Argon falls short
  • Price doubles to $4/$20 per million on December 1, 2026
  • Not available on the Gemini API free tier or the Google AI Pro plan, per Google
Full Gemini 4 Argon breakdown →
Where GPT-5.6 Sol falls short
  • Superseded by GPT-6.1 Sol, which scores higher at half the list price ($2/$10 vs $4/$20)
  • Prompts over 272K tokens bill at higher rates
Full GPT-5.6 Sol breakdown →

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