Gemini 4 Argon vs GPT-6.1 Sol
Gemini 4 Argon and GPT-6.1 Sol both list at $2 in and $10 out per 1M tokens right now, but only one of those prices is permanent.
Our verdict
Argon's price is a promotion that ends 30 Nov 2026 and doubles to $4 / $20, while GPT-6.1 Sol stays at $2 / $10. Artificial Analysis scores them almost level (53 against 52, 1 Oct 2026 capture), and GPT-6.1 Sol finished the index tasks at about $0.72 each, so from December GPT-6.1 Sol is the cheaper way to buy roughly the same score. Each vendor also reports its own coding result (Google 77.9% on DeepSWE for Argon), so rely on a test of your own task rather than those claims. On GPT-6.1 Sol, prompts over 272K input tokens bill at double input and 1.5 times output.
Benchmarks measure test tasks, not your business. Run a real job through both models before you commit.
Side by side
| Gemini 4 Argon | GPT-6.1 Sol | |
|---|---|---|
| Lab | OpenAI | |
| List price per 1M tokens (input / output) | $2 / $10 | $2 / $10 |
| Scheduled price | From Dec 1, 2026: $4 / $20 | - |
| Price notes | Introductory rate through 30 Nov 2026. | Prompts over 272K input tokens bill the whole request at 2x input and 1.5x output; cached input $0.10 per 1M. |
| Example job at list price | $4 | $4 |
| Context window | Not published | 1,050,000 tokens |
| Released | ||
| Open weights | No | No |
| Artificial Analysis Intelligence Index | 53 (Oct 1, 2026 capture)at high effort | 52 (Oct 1, 2026 capture) |
1M tokens in and 200K tokens out. List price only: models write different amounts, so a finished job can cost more or less. (1,000,000 / 200,000)
Common questions
Which is cheaper, Gemini 4 Argon or GPT-6.1 Sol?
Today they list at the same $2 in and $10 out per 1M tokens. From 1 December 2026 Argon rises to $4 and $20, while GPT-6.1 Sol stays at $2 and $10.
Which scores higher on independent benchmarks?
Artificial Analysis scored Argon 53 and GPT-6.1 Sol 52 (1 Oct 2026 capture), so they are within a point of each other.
Should I switch to Gemini 4 Argon now?
Only to test it. The introductory price lasts until 30 November 2026, and the score is level with GPT-6.1 Sol, so there is no price reason to switch once the rate doubles.
Sources
More model comparisons
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