Can I use both Gemini 3.1 Pro and Claude Opus 4.7 through one API?

Yes. ApexApi serves both behind one OpenAI-compatible endpoint and a single ak- key. Switch between them by changing the model slug, so you can A/B them on your own prompts without re-integrating.

Which is cheaper, Gemini 3.1 Pro or Claude Opus 4.7?

Live per-token prices for both are in the table above. Pricing changes over time, so the table reflects the current catalog rather than a fixed number.

How do I switch from Gemini 3.1 Pro to Claude Opus 4.7?

Change one string, the model slug, in your request. Same endpoint, same key, same billing. No new account or SDK.

Gemini 3.1 Pro vs Claude Opus 4.7

The short answer

Gemini 3.1 Pro centers on native multimodality and very long context, so it is strong when large mixed inputs dominate. Claude Opus 4.7 centers on careful reasoning and agentic coding. If your workload is document-heavy or multimodal, start with Gemini; if it is code-heavy and reasoning-intensive, start with Opus. As always on ApexApi, both share one key, so you can compare them directly on your own data.

At a glance

	Gemini 3.1 Pro Preview	Claude Opus 4.7
Maker	Google AI	Anthropic on Vertex (Claude)
Type	chat	chat
Context window	1,048,576 tokens	1,000,000 tokens
Vision input	Yes	Yes
Tool calling	Yes	Yes
Input price	$2.40 /1M	$6.00 /1M
Output price	$14.40 /1M	$30.00 /1M

Prices are live from the catalog and include our service fee.

When to choose Gemini 3.1 Pro Preview

•Long, multimodal inputs are central to the task.
•You want the largest practical context window.
•Native cross-modal grounding matters.

Gemini 3.1 Pro Preview API details →

When to choose Claude Opus 4.7

•Multi-file coding and whole-repo reasoning.
•Careful long-form analysis over raw throughput.
•Long autonomous agentic coding runs.

Claude Opus 4.7 API details →

Call both through one API and key

ApexApi serves Gemini 3.1 Pro Preview and Claude Opus 4.7 behind a single OpenAI-compatible endpoint. A/B them by changing one string.

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Frequently asked questions

Can I use both Gemini 3.1 Pro and Claude Opus 4.7 through one API?: Yes. ApexApi serves both behind one OpenAI-compatible endpoint and a single ak- key. Switch between them by changing the model slug, so you can A/B them on your own prompts without re-integrating.
Which is cheaper, Gemini 3.1 Pro or Claude Opus 4.7?: Live per-token prices for both are in the table above. Pricing changes over time, so the table reflects the current catalog rather than a fixed number.
How do I switch from Gemini 3.1 Pro to Claude Opus 4.7?: Change one string, the model slug, in your request. Same endpoint, same key, same billing. No new account or SDK.