Gemini 4 Argon vs Claude Opus 5.5: price, context window and capabilities
Gemini 4 Argon (google/gemini-4-argon) from Google and Claude Opus 5.5 (anthropic/claude-opus-5.5) from Anthropic are both multimodal language models on the OceanToken API. Gemini 4 Argon costs less per token than Claude Opus 5.5: $1.80 against $3.60 per 1M input tokens (50% less) and $9.00 against $18.00 per 1M output tokens (50% less). Both are 10% off their official price on OceanToken, for every account. Gemini 4 Argon has the larger context window: 1.05M tokens (1,048,576) against 1M (1,000,000) for Claude Opus 5.5. Both support tool calling, reasoning, structured outputs, image input and file input; only Gemini 4 Argon also lists audio input and video input.
Side by side
| Spec | Gemini 4 Argon −10% | Claude Opus 5.5 −10% |
|---|---|---|
| Model | Gemini 4 Argongoogle/ | Claude Opus 5.5anthropic/ |
| Publisher | Anthropic | |
| Kind | Text, vision, audio & video | Text & vision |
| Context window | 1.05M tokens1,048,576 | 1M tokens1,000,000 |
| Input price | $1.80 / 1M tokens | $3.60 / 1M tokens |
| Output price | $9.00 / 1M tokens | $18.00 / 1M tokens |
| Cached input price | $0.10 / 1M tokens | $0.20 / 1M tokens |
| Cache write price | $2.188 / 1M tokens | $5.00 / 1M tokens |
| Web search price | $0.014 / search | $0.01 / search |
| Discount (vs official, top tier) | −10% | −10% |
| Inputs | text, images, files, audio and video | text, images and files |
| Outputs | text | text |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Yes |
About these prices
Which should you choose?
- Choose Gemini 4 Argon to spend less per token: 50% less for input and 50% less for output than Claude Opus 5.5.
- Choose Gemini 4 Argon for the longest inputs: its context window holds 1.05M tokens against 1M for Claude Opus 5.5.
- Choose Gemini 4 Argon if you need audio input and video input: Claude Opus 5.5 does not list them.
- Not sure? Call both with the same OceanToken API key and compare them on your own prompts; each request is billed per use from one prepaid balance.
Get API Key Gemini 4 Argon Claude Opus 5.5
Frequently asked questions
Which is cheaper, Gemini 4 Argon or Claude Opus 5.5?
Gemini 4 Argon. Gemini 4 Argon costs less per token than Claude Opus 5.5: $1.80 against $3.60 per 1M input tokens (50% less) and $9.00 against $18.00 per 1M output tokens (50% less). Both are 10% off their official price on OceanToken, for every account. The OceanToken console always shows the current price.
Which has the larger context window, Gemini 4 Argon or Claude Opus 5.5?
Gemini 4 Argon. Gemini 4 Argon has the larger context window: 1.05M tokens (1,048,576) against 1M (1,000,000) for Claude Opus 5.5.
Can I call both Gemini 4 Argon and Claude Opus 5.5 with one API key?
Yes. Both are on the OceanToken API at https://api.oceantoken.ai/v1: one API key and one prepaid balance call either model. Send the model id google/gemini-4-argon or anthropic/claude-opus-5.5.
Models and publishers
Gemini 4 Argon · Claude Opus 5.5 · All Google models · All Anthropic models
More comparisons
Claude Opus 5.5 vs GPT-6.1 Sol · Claude Opus 5.5 vs Claude Sonnet 5.5 · DeepSeek V4.1 Flash vs Claude Opus 5.5 · DeepSeek V4.1 Flash vs Gemini 4 Argon · All comparisons