Model comparison
Claude Haiku 4.5 vs Gemini 3.1 Pro Preview
Compare Claude Haiku 4.5 vs Gemini 3.1 Pro Preview API pricing: input/output token costs, cache pricing, context windows, workload estimates, and routing fit.
Claude Haiku 4.5
anthropic · claude-haiku-4-5
- Input
- $1
- Output
- $5
- Context
- 200K
Gemini 3.1 Pro Preview
gemini · gemini/gemini-3.1-pro-preview
- Input
- $2
- Output
- $12
- Context
- 1M
Quick take
Claude Haiku 4.5 has the lower input price at $1 per 1M input tokens. Claude Haiku 4.5 is cheaper for the example blended workload below. Gemini 3.1 Pro Preview has the larger context window at 1M tokens.
Choose Claude Haiku 4.5 if...
- Claude Haiku 4.5 is the better default for cost-sensitive traffic and repeated high-volume calls.
Choose Gemini 3.1 Pro Preview if...
- Gemini 3.1 Pro Preview is safer for long documents, repository analysis, and RAG prompts because it has the larger context window.
- Gemini 3.1 Pro Preview gives more room for long generated answers, reports, or code output.
Example workload cost
Estimates use input tokens plus 20% output tokens. They exclude provider discounts, cache hits, and tool/search surcharges.
| Workload | Claude Haiku 4.5 | Gemini 3.1 Pro Preview | Cheaper |
|---|---|---|---|
| 1M input + 200K output | $2.00 | $4.40 | Claude Haiku 4.5 |
| 10M input + 2M output | $20.00 | $44.00 | Claude Haiku 4.5 |
| 100M input + 20M output | $200.00 | $440.00 | Claude Haiku 4.5 |
Context, output, and capability fit
Gemini 3.1 Pro Preview provides the larger context window. Check max output separately when the task needs long reports, code generation, or full-document rewrites.
- Claude Haiku 4.5 max output
- 64K
- Gemini 3.1 Pro Preview max output
- 65.5K
- Claude Haiku 4.5 features
- prompt caching, function calling, vision
- Gemini 3.1 Pro Preview features
- prompt caching, function calling, vision
Risk notes for Claude Haiku 4.5
- No major capability risk is flagged in this snapshot, but provider pages should still be verified before production routing.
Risk notes for Gemini 3.1 Pro Preview
- Preview or beta model: verify availability and pricing before production rollout.
Routing tags
fastbudgetagentsenterprise-ragcache-friendlyragfrontierpreviewreasoninglong-contextmultimodal