Gemini 4 Hydrogen vs GPT-6.1 Sol
Pick a route and service tier under each model. Prices, the calculator and the verdicts follow your choice.
At a glance
Generated from the rows below
Choose Gemini 4 Hydrogen for
- The lowest cost per typical request ($0.0068)
- The only one that takes video, audio
Choose GPT-6.1 Sol for
- The largest context window: 1,050,000 tokens
- The longest output: 128,000 tokens
Overview
Pricing
Prices on the route and tier chosen under each model
What will it cost?
Estimate a month of requests on the route and tier chosen for each model
Uses the route and tier chosen under each model, over 30 days. Cached input is billed at the cache-read rate.
Performance
Live gateway traffic
Activity
Tokens sent through Phaseo each day over the last 30 days
Features
Features from the parameters Phaseo routes support
Benchmarks
Only results that two or more of the selected models report get a row
Artificial Analysis Intelligence Index Independent
Higher is better · at Extra high effort · 2 of 2 models tested
Where they rank
The five leaders on each capability index, then the compared models. Each model at its best-scoring setting.
Artificial Analysis Intelligence Index61 models ranked
- #1Claude Fable 5.264.6
- #2Claude Opus 5.559.1
- #3GPT-6 Astra56.9
- #4GPT-6.1 Sol54.6
- #5Claude Sonnet 5.554.5
- #6Gemini 4 Hydrogen54.0
Epoch Capabilities Index165 models ranked
- #1Claude Fable 5.2173.4
- #2Gemini 4 Carbon169.8
- #3GPT-6 Astra169.0
- #4Claude Opus 5.5168.5
- #5GPT-6.1 Sol168.5
Lab-reported results come from each lab’s own launch materials and may use different settings, so none is marked best. Independent results come from third-party evaluators.
Providers
Where each model runs on Phaseo, with standard-tier prices per 1M tokens. Providers that serve more of these models come first.
To price the whole page on one of these providers, pick it under the model’s name at the top.
Details
Gemini 4 Hydrogen vs GPT-6.1 Sol: side-by-side summary
Gemini 4 Hydrogen and GPT-6.1 Sol are both available through the Phaseo API, so switching between them is a change of model id rather than a new integration.
Gemini 4 Hydrogen is from Google. It has a 1,048,576-token context window. On its cheapest route it costs $1.50 per 1M input tokens and $7.50 per 1M output tokens.
GPT-6.1 Sol is from OpenAI. It has a 1,050,000-token context window. On its cheapest route it costs $2.00 per 1M input tokens and $10.00 per 1M output tokens.
Gemini 4 Hydrogen model details, providers and pricingGPT-6.1 Sol model details, providers and pricing
Gemini 4 Hydrogen vs GPT-6.1 Sol at a glance
| Attribute | Gemini 4 Hydrogen | GPT-6.1 Sol |
|---|---|---|
| Lab | OpenAI | |
| Input price per 1M tokens | $1.50 | $2.00 |
| Output price per 1M tokens | $7.50 | $10.00 |
| Context window | 1,048,576 tokens | 1,050,000 tokens |
| Max output | 65,536 tokens | 128,000 tokens |
| Artificial Analysis Intelligence Index | 54.0 (#6) | 54.6 (#4) |
Prices are each model's cheapest standard route on Phaseo. Benchmark ranks use each model's best-scoring evaluated setting.
Frequently asked questions
Which is cheaper, Gemini 4 Hydrogen or GPT-6.1 Sol?
Gemini 4 Hydrogen is cheaper for both input and output tokens. Gemini 4 Hydrogen costs $1.50 per 1M input tokens and $7.50 per 1M output tokens; GPT-6.1 Sol costs $2.00 and $10.00, each on its cheapest standard route on Phaseo.
Which has the longer context window, Gemini 4 Hydrogen or GPT-6.1 Sol?
GPT-6.1 Sol has the longer context window at 1,050,000 tokens, compared with 1,048,576 tokens for Gemini 4 Hydrogen.
Which scores higher on the Artificial Analysis Intelligence Index, Gemini 4 Hydrogen or GPT-6.1 Sol?
GPT-6.1 Sol scores higher on the Artificial Analysis Intelligence Index. GPT-6.1 Sol scores 54.6, ranked #4 of 61. Gemini 4 Hydrogen scores 54.0, ranked #6 of 61.
Can I use Gemini 4 Hydrogen and GPT-6.1 Sol through one API?
Yes. Both are served through the Phaseo API, so you can switch between them by changing the model id.