Gemini 3 Pro vs Claude Haiku 4.5 for research: which is better in 2026?

A head-to-head look at Gemini 3 Pro and Claude Haiku 4.5 for research. Benchmarks via artificialanalysis.ai, pricing as of May 2026. Compare AI models like these inside Admix.

Quick verdict

For research in May 2026, Gemini 3 Pro edges out Claude Haiku 4.5 on the intelligenceIndex metric. Best for very long source bundles.

Side-by-side specs

Spec	Gemini	Haiku
Intelligence index	75.6	65.8
Coding index	73.4	66.2
Context window	2M tokens	500K tokens
Speed (tok/s)	165	205
Input $/M	$2.50	$0.80
Output $/M	$10.00	$4.00
Released	Feb 12, 2026	Mar 19, 2026

How they handle research

Gemini 3 Pro: Best for very long source bundles.

Claude Haiku 4.5: Cheap Claude quality for everyday tasks. The main caveat is not as strong as opus on agentic coding.

Cost per 1,000 queries

Assuming 1,500 input and 800 output tokens per query:

Gemini 3 Pro: $11.75 per 1,000 queries
Claude Haiku 4.5: $4.40 per 1,000 queries

Verdict by sub-task

Best raw quality on research:
Best price: Claude Haiku 4.5
Longest context: Gemini 3 Pro
Fastest: Claude Haiku 4.5

FAQ

Is Gemini 3 Pro better than Claude Haiku 4.5 for research?

On May 2026 benchmarks (artificialanalysis.ai), Gemini 3 Pro ranks higher than Claude Haiku 4.5 for research on the intelligenceIndex metric. The gap is small enough that the choice often comes down to price, context length, and tone.

Which is cheaper, Gemini 3 Pro or Claude Haiku 4.5?

Gemini 3 Pro costs $2.50 input and $10.00 output per million tokens. Claude Haiku 4.5 costs $0.80 input and $4.00 output per million tokens.

Can I use both Gemini and Haiku in one app?

Yes. Admix is a multi model AI chat aggregator that lets you run Gemini 3 Pro and Claude Haiku 4.5 side by side under one subscription.

Sources

Benchmarks from artificialanalysis.ai (May 2026).

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