Gemini 4 Carbon and GPT-6.1 Sol compared
Gemini 4 Carbon, GPT-6.1 Sol, compared side by side on price, context, and capabilities. All are available on Hormouz through one OpenAI-compatible API.
Google Gemini 4 Carbon | OpenAI GPT-6.1 Sol | |
|---|---|---|
| At a glance | ||
| Context window | 1,048,576 | 1,050,000 |
| Input type | audio, file, image, text, video | file, image, text |
| Output type | text | text |
| Type | text, audio, image, video | text, image |
| Pricing | ||
| Input | $2/M | $2/M |
| Output | $10/M | $10/M |
| Cached input | $0.1/M | $0.1/M |
| Cache write | $0.188/M | $2.5/M |
| Web search (per 1K calls) | $14/1K | $10/1K |
| Persian text | ||
| Tokens per 100 Persian words | 160 | 171 |
| Persian vs English tokens (same text) | ×1.4 | ×1.5 |
| Input cost of 1,000 Persian words | $0.0032 | $0.0034 |
| Features | ||
| Thinking (reasoning) | Always on | Always on |
| Max output tokens | 33K | 128K |
| Tool use | Yes | Yes |
| Structured output (JSON) | Yes | Yes |
| Prompt caching | Yes | Yes |
| Capabilities | ||
| Capabilities | Vision · Tools · Streaming · Long context | Vision · Tools · Streaming · Long context |
| Benchmarks | ||
| Intelligence Index | 59 | 52 |
| HLEHumanity's Last Exam | — | 53% |
| AA-LCRLong-context reasoning | — | 83% |
| CritPtResearch-level physics reasoning | — | 32% |
| GDPvalEconomically valuable tasks | — | 54% |
| AA OmniscienceBroad factual knowledge accuracy | — | 62% |
| Non-HallucinationRate of avoiding fabricated answers | — | 46% |
| SciCodePython for scientific computing | — | 54% |
Gemini 4 Carbon and GPT-6.1 Sol: side-by-side summary
Gemini 4 Carbon, from Google, has a 1,048,576-token context window and costs $2/M for input and $10/M for output on Hormouz (M = one million tokens).
GPT-6.1 Sol, from OpenAI, has a 1,050,000-token context window and costs $2/M for input and $10/M for output on Hormouz (M = one million tokens).
Both are available through one OpenAI-compatible API and one Hormouz key, and you switch between them by changing the model id in your request.
Where they rank
The compared models' scores beside a few models of similar standing.
Intelligence Index
- Claude Opus 5.557.6
- Claude Fable 5.153.4
- GPT-6 Astra52.7
- GPT-6.1 Sol51.8
Data from Artificial Analysis; scores out of 100.
FAQ
- Which has the longer context window, Gemini 4 Carbon or GPT-6.1 Sol?
- GPT-6.1 Sol has the longest context window at 1,050,000 tokens, compared with 1,048,576 for Gemini 4 Carbon.
- Which is cheaper, Gemini 4 Carbon or GPT-6.1 Sol?
- Their input prices are the same. Gemini 4 Carbon: $2/M input, $10/M output and GPT-6.1 Sol: $2/M input, $10/M output (per million tokens, on Hormouz).
- Which scores higher on intelligence, Gemini 4 Carbon or GPT-6.1 Sol?
- Gemini 4 Carbon scores higher on the Artificial Analysis Intelligence Index: 59 for Gemini 4 Carbon and 51.8 for GPT-6.1 Sol.
- Do Gemini 4 Carbon and GPT-6.1 Sol reason before answering?
- Gemini 4 Carbon always reasons before answering; the reasoning effort setting controls how much. GPT-6.1 Sol always reasons before answering; the reasoning effort setting controls how much.
- Can I use all 2 of these models through one API?
- Yes. All of them are available on Hormouz through a single OpenAI-compatible API and one API key. Switch between them by changing the model id.
View Gemini 4 CarbonView GPT-6.1 SolTry Gemini 4 Carbon in the PlaygroundTry GPT-6.1 Sol in the Playground
Updated 2026-11-11