Choose Gemini 4 Argon if
- ✓ Your input includes video or audio
- ✓ You want the widest input set at a mid-tier price
- ✓ The answer is a summary, a decision or a short edit
Head to head · OpenRouter
Gemini 4 Argon vs GPT-6.1 Sol
Two flagships at exactly the same price. Both list $2 in / $10 out per million with a ~1M-token window and cached reads at $0.10; Artificial Analysis puts Gemini 4 Argon at 53 and, on its own page, GPT-6.1 Sol's sibling GPT-6 Astra at 53 as well. Google reads video, audio, images and files; OpenAI reads images and files.
Quick verdict
When the price and the index agree, the tiebreak is what goes in and what comes out: Gemini 4 Argon is the one to call when the input is a recording or a screen recording, and it caps answers at 65,536 tokens. GPT-6.1 Sol is the safer pick for long agentic coding runs where the answer itself is long, and it is the row the OpenAI tooling ecosystem is built around.
Side-by-side comparison
| Field | Gemini 4 Argon | GPT-6.1 Sol |
|---|---|---|
| Provider | OpenAI | |
| Context window | 1.05M tokens | 1.05M tokens |
| Input / 1M | $2.00 | $2.00 |
| Output / 1M | $10.00 | $10.00 |
| Modalities | Text, Vision, Audio, Video, Files | Text, Vision, Files |
| Best for | Overall, Coding, Agents, Multimodal | Overall, Coding, Agents |
Source
openrouter.ai/api/v1/models Verified 2026-10-16 Cost estimates
| Workload | Input | Output | Gemini 4 Argon | GPT-6.1 Sol |
|---|---|---|---|---|
| Quick test | 20,000 | 5,000 | $0.090 | $0.090 |
| Product chat month | 500,000 | 125,000 | $2.25 | $2.25 |
| Document batch | 5,000,000 | 1,000,000 | $20.00 | $20.00 |
Estimates use list input/output prices and exclude cache discounts, provider surcharges and tool fees.
Choose GPT-6.1 Sol if
- ✓ The output itself is long — a refactor, a migration, a long document
- ✓ You are building on OpenAI's tool-calling and structured-output behaviour
- ✓ You are already running other GPT-6 rows and want one vendor's quirks
FAQ
Is Gemini 4 Argon cheaper than GPT-6.1 Sol?
Gemini 4 Argon costs $2.00 input and $10.00 output per 1M tokens. GPT-6.1 Sol costs $2.00 input and $10.00 output per 1M tokens.
Which model has the larger context window?
Gemini 4 Argon offers 1.05M tokens; GPT-6.1 Sol offers 1.05M tokens. Provider-specific limits can vary by route.
Which one should I choose?
When the price and the index agree, the tiebreak is what goes in and what comes out: Gemini 4 Argon is the one to call when the input is a recording or a screen recording, and it caps answers at 65,536 tokens. GPT-6.1 Sol is the safer pick for long agentic coding runs where the answer itself is long, and it is the row the OpenAI tooling ecosystem is built around.
Gemini 4 Argon details GPT-6.1 Sol details Estimate monthly cost
Pricing and context data are based on a 2026-10-16 snapshot. Provider limits and pricing can change; verify on OpenRouter before production.