Claude Sonnet 5.5 vs Gemini 4 Hydrogen
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 Claude Sonnet 5.5 for
- The fastest output on Phaseo: 130 tps
- The longest output: 128,000 tokens
- The most routes on Phaseo: 7
Choose Gemini 4 Hydrogen for
- The lowest cost per typical request ($0.0068)
- The largest context window: 1,048,576 tokens
- The lowest latency on Phaseo: 0.99 s
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
- #8Claude Sonnet 5.5166.6
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
Claude Sonnet 5.5 vs Gemini 4 Hydrogen: side-by-side summary
Claude Sonnet 5.5 and Gemini 4 Hydrogen are both available through the Phaseo API, so switching between them is a change of model id rather than a new integration.
Claude Sonnet 5.5 is from Anthropic. It has a 1,000,000-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 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.
Claude Sonnet 5.5 model details, providers and pricingGemini 4 Hydrogen model details, providers and pricing
Claude Sonnet 5.5 vs Gemini 4 Hydrogen at a glance
| Attribute | Claude Sonnet 5.5 | Gemini 4 Hydrogen |
|---|---|---|
| Lab | Anthropic | |
| Input price per 1M tokens | $2.00 | $1.50 |
| Output price per 1M tokens | $10.00 | $7.50 |
| Context window | 1,000,000 tokens | 1,048,576 tokens |
| Max output | 128,000 tokens | 65,536 tokens |
| Artificial Analysis Intelligence Index | 54.5 (#5) | 54.0 (#6) |
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, Claude Sonnet 5.5 or Gemini 4 Hydrogen?
Gemini 4 Hydrogen is cheaper for both input and output tokens. Claude Sonnet 5.5 costs $2.00 per 1M input tokens and $10.00 per 1M output tokens; Gemini 4 Hydrogen costs $1.50 and $7.50, each on its cheapest standard route on Phaseo.
Which has the longer context window, Claude Sonnet 5.5 or Gemini 4 Hydrogen?
Gemini 4 Hydrogen has the longer context window at 1,048,576 tokens, compared with 1,000,000 tokens for Claude Sonnet 5.5.
Which scores higher on the Artificial Analysis Intelligence Index, Claude Sonnet 5.5 or Gemini 4 Hydrogen?
Claude Sonnet 5.5 scores higher on the Artificial Analysis Intelligence Index. Claude Sonnet 5.5 scores 54.5, ranked #5 of 61. Gemini 4 Hydrogen scores 54.0, ranked #6 of 61.
Which is faster on Phaseo, Claude Sonnet 5.5 or Gemini 4 Hydrogen?
Claude Sonnet 5.5 generates a median 130 tokens per second through Phaseo, compared with 40 for Gemini 4 Hydrogen.
Can I use Claude Sonnet 5.5 and Gemini 4 Hydrogen through one API?
Yes. Both are served through the Phaseo API, so you can switch between them by changing the model id.