High-volume, cost-sensitive work
Choose Gemini Omni Flash
Gemini Omni Flash costs 16% less on a typical mix of three input tokens for every output token ($3.38 against $4.00 per million tokens).
Gemini Omni Flash vs GPT-6.1 Sol: price, context and capabilities
Choose Gemini Omni Flash for high-volume, cost-sensitive work and writing and code generation. Choose GPT-6.1 Sol for the latest release.
In short
- Gemini Omni Flash is 16% cheaper than GPT-6.1 Sol at the headline price ($3.38 / 1M tokens vs $4.00 / 1M tokens).
- GPT-6.1 Sol reads more per request: 1.05M tokens against 1.05M.
- GPT-6.1 Sol is the newer model (Sep 29, 2026, against August 2026).
- Only Gemini Omni Flash offers audio input, video input.
- Only GPT-6.1 Sol offers prompt caching.
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Writing and code generation
Choose Gemini Omni Flash
Gemini Omni Flash charges $9.00 per million output tokens, against $10.00 for GPT-6.1 Sol. Output dominates the bill when answers are long.
Latest release
Choose GPT-6.1 Sol
GPT-6.1 Sol is the newer release (Sep 29, 2026, against August 2026 for Gemini Omni Flash).
Monthly cost at three volumes
| Volume | Gemini Omni Flash | GPT-6.1 Sol | Difference |
|---|---|---|---|
| Prototype: 1M input, 250K output tokens | $3.75 | $4.50 | Gemini Omni Flash, $0.75 less |
| Production: 20M input, 5M output tokens | $75.00 | $90.00 | Gemini Omni Flash, $15.00 less |
| Scale: 500M input, 100M output tokens | $1,650 | $2,000 | Gemini Omni Flash, $350.00 less |
Standard rates, without caching or batch discounts. Volumes are per month.
Specifications side by side
| Gemini Omni Flash | GPT-6.1 Sol | |
|---|---|---|
| Provider | OpenAI | |
| Category | Language models | Language models |
| Status | Generally available | Generally available |
| Headline price | $3.38 / 1M tokens | $4.00 / 1M tokens |
| Input | $1.50 / 1M tokens | $2.00 / 1M tokens |
| Output | $9.00 / 1M tokens | $10.00 / 1M tokens |
| Cached input | No data | $0.10 / 1M tokens |
| Context window | 1.05M | 1.05M |
| Max output | No data | 128k |
| Released | August 2026 | Sep 29, 2026 |
| Knowledge cutoff | No data | April 2026 |
| Licence | Proprietary | Proprietary |
| Capabilities | Vision, Audio input, Video input, Reasoning, Tool calling, Structured output, Batch API | Vision, Reasoning, Tool calling, Structured output, Prompt caching, Batch API |
| API model id | gemini-omni-1.1-flash | gpt-6.1-sol |
Benchmarks side by side
Leader in bold.
| Benchmark | Gemini Omni Flash | GPT-6.1 Sol |
|---|---|---|
| Intelligence Index | No data | 51.8 |
| SciCode | No data | 54.2% |
| Humanity's Last Exam | No data | 52.9% |
| MMMU-Pro (visual reasoning) | No data | 86% |
| Long-context reasoning (AA-LCR) | No data | 83% |
Independent evaluations by Artificial Analysis, run the same way for every model, at the reasoning setting shown. Percentages unless marked as an index.
Frequently asked questions
Should I choose Gemini Omni Flash or GPT-6.1 Sol?
Choose Gemini Omni Flash for high-volume, cost-sensitive work and writing and code generation. Choose GPT-6.1 Sol for the latest release.
Which is cheaper, Gemini Omni Flash or GPT-6.1 Sol?
Gemini Omni Flash is 16% cheaper than GPT-6.1 Sol at the headline price ($3.38 / 1M tokens vs $4.00 / 1M tokens).
Which has the larger context window, Gemini Omni Flash or GPT-6.1 Sol?
GPT-6.1 Sol reads more per request: 1.05M tokens against 1.05M.
What is the difference between Gemini Omni Flash and GPT-6.1 Sol?
Gemini Omni Flash is made by Google and GPT-6.1 Sol by OpenAI. Gemini Omni Flash is 16% cheaper than GPT-6.1 Sol at the headline price ($3.38 / 1M tokens vs $4.00 / 1M tokens). GPT-6.1 Sol reads more per request: 1.05M tokens against 1.05M. GPT-6.1 Sol is the newer model (Sep 29, 2026, against August 2026). Only Gemini Omni Flash offers audio input, video input. Only GPT-6.1 Sol offers prompt caching.
How much do Gemini Omni Flash and GPT-6.1 Sol cost per month?
At 20 million input and 5 million output tokens a month, Gemini Omni Flash costs $75.00 and GPT-6.1 Sol costs $90.00, at standard rates.
Which is newer, Gemini Omni Flash or GPT-6.1 Sol?
GPT-6.1 Sol was released on Sep 29, 2026 and Gemini Omni Flash on August 2026.