Claude 3.5 Haiku vs Gemini 2.5 Pro
A complete head-to-head: pricing, context window, benchmarks, modality coverage, and openness, with a programmatic verdict synthesized from the underlying data.
- PriceClaude 3.5 Haiku
Claude 3.5 Haiku is roughly 2.5× cheaper on output tokens ($4.00 vs $10.00 per 1M).
- Context windowGemini 2.5 Pro
Gemini 2.5 Pro accepts 2.1M tokens vs 200K, 10.5× the room for long documents and codebases.
- BenchmarksTie
No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores.
- ModalitiesGemini 2.5 Pro
Gemini 2.5 Pro supports 4 modalities (text, vision, audio, video) vs 2 for Claude 3.5 Haiku.
- OpennessTie
Both are closed-weight, API-only.
On balance Gemini 2.5 Pro edges ahead, winning 2 of 5 categories against Claude 3.5 Haiku's 1. Claude 3.5 Haiku is roughly 2.5× cheaper on output tokens ($4.00 vs $10.00 per 1M). Gemini 2.5 Pro accepts 2.1M tokens vs 200K, 10.5× the room for long documents and codebases.
No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores. They differ in modality coverage, Claude 3.5 Haiku handles text, vision while Gemini 2.5 Pro handles text, vision, audio, video, which can be the deciding factor before you even look at benchmarks. Both are closed-weight, API-only.
Gemini 2.5 Pro is the newer of the two, released 5 months after Claude 3.5 Haiku, which usually means a more recent knowledge cutoff and updated safety post-training. Claude 3.5 Haiku is usually picked for customer support and code completion workloads, while Gemini 2.5 Pro sees more deployments in long context and rag. If pricing matters more than every last benchmark point, run the numbers in the calculator below before committing.
Side-by-side specs
| Spec | Claude 3.5 Haiku | Gemini 2.5 Pro |
|---|---|---|
| Provider | Anthropic | |
| Released | Nov 2024 | Mar 2025 |
| Modalities | text, vision | text, vision, audio, video |
| Context window | 200K tokens | 2.1M tokens |
| Max output | , | , |
| Input · 1M | $0.80 / 1M tokens | $1.25 / 1M tokens |
| Output · 1M | $4.00 / 1M tokens | $10.00 / 1M tokens |
| Knowledge cutoff | , | 2025-01 |
| Open weights | No | No |
| API available | Yes | Yes |
Pricing at scale
What you'd actually pay at typical workloads. Numbers come from each model's published per-million-token rates.
- Light usage, 100k in / 50k out per day$8.40 vs $18.75
- Heavy usage, 1M in / 500k out per day$84.00 vs $188
- RAG workload, 5M in / 200k out per day$144 vs $248
Light usage, 100k in / 50k out per day: $8.40 vs $18.75 per month, model A comes out ahead. Heavy usage, 1M in / 500k out per day: $84.00 vs $188 per month, model A comes out ahead. RAG workload, 5M in / 200k out per day: $144 vs $248 per month, model A comes out ahead.
Estimated spend for the listed models at your usage. Numbers are derived from each model's published per-million-token rates.
- Claude 3.5 Haiku$0.280
- Gemini 2.5 Pro$0.625
Benchmarks compared
Only sourced numbers. Where a benchmark is missing for one model we show the available value rather than fabricating the other.
- MMLU,86.0
- GPQA,84.0
Claude 3.5 Haiku fits when…
- Fast
- Cheap for Anthropic
- Strong code at small size
- Cost-sensitive workloads, 2.5× cheaper than Gemini 2.5 Pro on output tokens.
Gemini 2.5 Pro fits when…
- 2M-token context window
- Strong on long-document tasks
- Native multimodal handling
- Long-context tasks, handles 2.1M tokens vs 200K for Claude 3.5 Haiku.
- Multimodal needs covering audio, video.
Consider Claude Opus 4.7
Anthropic's mid-2026 flagship, ahead on SWE-bench, agent reliability, and writing quality.
Frequently asked
Is Claude 3.5 Haiku or Gemini 2.5 Pro cheaper?
Claude 3.5 Haiku is cheaper at $4.00 / 1M tokens per million output tokens, vs $10.00 / 1M tokens for Gemini 2.5 Pro.Which has the larger context window?
Gemini 2.5 Pro accepts 2.1M tokens vs 200K for Claude 3.5 Haiku.Is Claude 3.5 Haiku or Gemini 2.5 Pro better for coding?
Both Claude 3.5 Haiku and Gemini 2.5 Pro are competitive on coding benchmarks. See each model's individual spec page for HumanEval and SWE-bench scores where published. For an opinionated pick, consult our Best LLM for Coding ranking.Are either of these models open source?
Neither model ships open weights, both are accessible only via their respective providers' APIs.When were Claude 3.5 Haiku and Gemini 2.5 Pro released?
Claude 3.5 Haiku was released by Anthropic on 2024-11-04. Gemini 2.5 Pro was released by Google on 2025-03-25.
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