Claude Haiku 4.5 vs Gemini 2.5 Pro
Claude Haiku 4.5 (2025) and Gemini 2.5 Pro (2025) are general-purpose language models from Anthropic and Google DeepMind. Claude Haiku 4.5 ships a 200k-token context window, while Gemini 2.5 Pro ships a 1M-token context window. On SWE-bench Verified, Claude Haiku 4.5 leads by 10.1 pts. On pricing, Claude Haiku 4.5 costs $0.8/1M input tokens versus $1.25/1M for the alternative. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit.
Claude Haiku 4.5 is ~56% cheaper at $0.8/1M; pay for Gemini 2.5 Pro only for coding workflow support.
Specs
| Released | 2025-10-01 | 2025-06-17 |
| Context window | 200k | 1M |
| Parameters | — | — |
| Architecture | decoder only | decoder only |
| License | Proprietary | Proprietary |
| Knowledge cutoff | 2025-02 | 2025-01 |
Pricing and availability
| Claude Haiku 4.5 | Gemini 2.5 Pro | |
|---|---|---|
| Input price | $0.8/1M tokens | $1.25/1M tokens |
| Output price | $4/1M tokens | $10/1M tokens |
| Providers |
Capabilities
| Claude Haiku 4.5 | Gemini 2.5 Pro | |
|---|---|---|
| Vision | ||
| Multimodal | ||
| Reasoning | ||
| Function calling | ||
| Tool use | ||
| Structured outputs | ||
| Code execution |
Benchmarks
| Benchmark | Claude Haiku 4.5 | Gemini 2.5 Pro |
|---|---|---|
| SWE-bench Verified | 73.3 | 63.2 |
Deep dive
On shared benchmark coverage, SWE-bench Verified has Claude Haiku 4.5 at 73.3 and Gemini 2.5 Pro at 63.2, with Claude Haiku 4.5 ahead by 10.1 points. The largest visible gap is 10.1 points on SWE-bench Verified, which matters most when that benchmark mirrors your workload. Treat isolated benchmark wins as directional, because provider routing, prompt style, and tool access can move real application results.
The capability footprint is close: both models cover vision, multimodal input, function calling, tool use, and structured outputs. That makes context budget, benchmark fit, and provider maturity more important than a simple checklist. If your application depends on one integration detail, verify it against the provider route you plan to use, not just the base model listing.
For cost, Claude Haiku 4.5 lists $0.8/1M input and $4/1M output tokens, while Gemini 2.5 Pro lists $1.25/1M input and $10/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Claude Haiku 4.5 lower by about $2.12 per million blended tokens. Availability is 8 providers versus 3, so concentration risk also matters.
Choose Claude Haiku 4.5 when coding workflow support, lower input-token cost, and broader provider choice are central to the workload. Choose Gemini 2.5 Pro when coding workflow support and larger context windows are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship.
FAQ
Which has a larger context window, Claude Haiku 4.5 or Gemini 2.5 Pro?
Gemini 2.5 Pro supports 1M tokens, while Claude Haiku 4.5 supports 200k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, Claude Haiku 4.5 or Gemini 2.5 Pro?
Claude Haiku 4.5 is cheaper on tracked token pricing. Claude Haiku 4.5 costs $0.8/1M input and $4/1M output tokens. Gemini 2.5 Pro costs $1.25/1M input and $10/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Claude Haiku 4.5 or Gemini 2.5 Pro open source?
Claude Haiku 4.5 is listed under Proprietary. Gemini 2.5 Pro is listed under Proprietary. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.
Which is better for vision, Claude Haiku 4.5 or Gemini 2.5 Pro?
Both Claude Haiku 4.5 and Gemini 2.5 Pro expose vision. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.
Which is better for multimodal input, Claude Haiku 4.5 or Gemini 2.5 Pro?
Both Claude Haiku 4.5 and Gemini 2.5 Pro expose multimodal input. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.
Where can I run Claude Haiku 4.5 and Gemini 2.5 Pro?
Claude Haiku 4.5 is available on Microsoft Foundry, Anthropic, Snowflake Cortex, AWS Bedrock, and GCP Vertex AI. Gemini 2.5 Pro is available on Google AI Studio, GCP Vertex AI, and OpenRouter. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-04-24. Data sourced from public model cards and provider documentation.