# Gemini 4 Argon vs GPT-6.1 Sol

Gemini 4 Argon (Google) and GPT-6.1 Sol (OpenAI) compared on the facts each vendor publishes. Price does not decide it: both list $2 in and $10 out per 1M tokens. For very long inputs, GPT-6.1 Sol lists the larger context window: 1.05M tokens against 1.05M. We have not run either model: every value below is Reported, with a link to its source.

Updated: 2026-10-29 · Canonical: https://theagenticweekly.com/compare/gemini-4-argon-vs-gpt-6-1-sol · Evidence: Reported (not run by us)

## Specs

| | [Gemini 4 Argon](https://theagenticweekly.com/models/gemini-4-argon) | [GPT-6.1 Sol](https://theagenticweekly.com/models/gpt-6-1-sol) |
|---|---|---|
| Price (as listed) | $2 in / $10 out per 1M tokens (introductory price until Nov 30, 2026; list $4 / $20) ([source](https://ai.google.dev/gemini-api/docs/pricing)) | $2 in / $10 out per 1M tokens ([source](https://developers.openai.com/api/docs/models/gpt-6.1-sol)) |
| Context window | 1,048,576 tokens (1.05M) ([source](https://ai.google.dev/gemini-api/docs/models/gemini-4-argon)) | 1,050,000 tokens (1.05M) ([source](https://developers.openai.com/api/docs/models/gpt-6.1-sol)) |
| Max output | 65,536 tokens ([source](https://ai.google.dev/gemini-api/docs/models/gemini-4-argon)) | 128,000 tokens ([source](https://developers.openai.com/api/docs/models/gpt-6.1-sol)) |
| Input | text, image, video, audio, pdf ([source](https://ai.google.dev/gemini-api/docs/models/gemini-4-argon)) | text, image ([source](https://developers.openai.com/api/docs/models/gpt-6.1-sol)) |
| Output | text ([source](https://ai.google.dev/gemini-api/docs/models/gemini-4-argon)) | text ([source](https://developers.openai.com/api/docs/models/gpt-6.1-sol)) |
| Licence | Proprietary (API) ([source](https://ai.google.dev/gemini-api/docs/pricing)) | Proprietary (API) ([source](https://developers.openai.com/api/docs/models/gpt-6.1-sol)) |
| Released | Oct 13, 2026 ([source](https://blog.google/innovation-and-ai/models-and-research/gemini-models/introducing-gemini-4-argon/)) | Sep 29, 2026 ([source](https://developers.openai.com/api/docs/changelog)) |
| Status | generally available | generally available |
| API id | gemini-4-argon ([source](https://ai.google.dev/gemini-api/docs/models/gemini-4-argon)) | gpt-6.1-sol ([source](https://developers.openai.com/api/docs/models/gpt-6.1-sol)) |

## How to choose

- Price does not decide it: both list $2 in and $10 out per 1M tokens.
- For very long inputs, GPT-6.1 Sol lists the larger context window: 1.05M tokens against 1.05M.
- For long single answers, GPT-6.1 Sol lists a higher max output (128,000 tokens against 65,536).
- Gemini 4 Argon also accepts video, audio, pdf input.
- Gemini 4 Argon is newer, by 14 days.

## Benchmark snapshots (not our tests)

- LMArena WebDev leaderboard (Elo-style score) (independent, 2026-10-22, [source](https://arena.ai/leaderboard/webdev)): GPT-6.1 Sol (Max) 1749
- Terminal-Bench 4.0 official leaderboard (independent, 2026-10-26, [source](https://www.tbench.ai/leaderboard/terminal-bench/4.0)): GPT-6.1 Sol (Codex, max) 58.2%

## FAQ

**Which is cheaper, Gemini 4 Argon or GPT-6.1 Sol?** Gemini 4 Argon: $2 in / $10 out per 1M tokens (introductory price until Nov 30, 2026; list $4 / $20). GPT-6.1 Sol: $2 in / $10 out per 1M tokens. Both prices are the vendors' own listed prices on the date each model was last verified.

**Which has the bigger context window?** GPT-6.1 Sol, with 1,050,000 tokens against 1,048,576.

**Which is better for coding?** We have not tested either. Sourced snapshots: LMArena WebDev leaderboard (Elo-style score) (independent, Oct 22, 2026): GPT-6.1 Sol (Max) 1749; Terminal-Bench 4.0 official leaderboard (independent, Oct 26, 2026): GPT-6.1 Sol (Codex, max) 58.2%. Scores from different boards are not comparable with each other.

**Are Gemini 4 Argon and GPT-6.1 Sol open source?** Gemini 4 Argon: Proprietary (API), no downloadable weights. GPT-6.1 Sol: Proprietary (API), no downloadable weights.

**Did you test Gemini 4 Argon and GPT-6.1 Sol?** No. This page is Reported: every fact is read from the vendor page linked beside it, and benchmark numbers come from the named boards.

## How to cite

Agentic Weekly, "Gemini 4 Argon vs GPT-6.1 Sol", updated 2026-10-29, https://theagenticweekly.com/compare/gemini-4-argon-vs-gpt-6-1-sol