Gemini 2.5 Pro vs Claude Haiku 4.5
Pricing, context window, and benchmark comparison · Last updated April 2026
Claude Haiku 4.5 is cheaper than Gemini 2.5 Pro at $1.00/1M/1M vs $1.25/1M/1M input tokens — a 1.3x cost difference. Gemini 2.5 Pro scores higher on quality benchmarks (ELO 1385). Choose Claude Haiku 4.5 for cost-sensitive workloads; choose Gemini 2.5 Pro for maximum quality.
Which is cheaper: Gemini 2.5 Pro or Claude Haiku 4.5?
Claude Haiku 4.5 is the cheaper option at $1.00/1M per 1M input tokens, compared to $1.25/1M for Gemini 2.5 Pro. That is a 1.3x cost difference on input tokens. Output pricing follows a similar pattern: Gemini 2.5 Pro charges $10.00/1M/1M vs $5.00/1M/1M for Claude Haiku 4.5.
Which has better quality: Gemini 2.5 Pro or Claude Haiku 4.5?
Based on LMSYS Chatbot Arena rankings, Gemini 2.5 Pro achieves a higher ELO score (1385 vs 1320), suggesting stronger performance on open-ended tasks. Gemini 2.5 Pro excels at 2m token context window — among the largest available. Claude Haiku 4.5 is known for near-frontier intelligence at the lowest claude price tier.
Which should you choose: Gemini 2.5 Pro or Claude Haiku 4.5?
- → 2M token context window — among the largest available
- → Strong multimodal reasoning across text, video, and audio
- → Excellent price-to-quality ratio vs. flagships
- → Near-frontier intelligence at the lowest Claude price tier
- → Fastest Claude model
- → 200K context window
Frequently Asked Questions
Which is cheaper: Gemini 2.5 Pro or Claude Haiku 4.5?
Claude Haiku 4.5 is cheaper at $1.00/1M per 1M input tokens, making it 1.3x more affordable.
Which has better quality: Gemini 2.5 Pro or Claude Haiku 4.5?
Gemini 2.5 Pro scores higher on the LMSYS Chatbot Arena with an ELO of 1385, suggesting better overall quality for most tasks.
Which has a larger context window: Gemini 2.5 Pro or Claude Haiku 4.5?
Gemini 2.5 Pro has a larger context window at 2000K tokens.
Should I choose Gemini 2.5 Pro or Claude Haiku 4.5?
Choose Claude Haiku 4.5 if cost is the priority. Choose Gemini 2.5 Pro if benchmark quality is most important. Consider your specific use case: Gemini 2.5 Pro is best for long-context and document-analysis, while Claude Haiku 4.5 excels at fast-response and customer-support.
Is Gemini 2.5 Pro or Claude Haiku 4.5 open source?
Gemini 2.5 Pro is proprietary. Claude Haiku 4.5 is proprietary.