Claude Haiku 4.5 vs Gemini 3 Flash Preview
Claude Haiku 4.5 (2025) and Gemini 3 Flash Preview (2025) are general-purpose language models from Anthropic and Google DeepMind. Claude Haiku 4.5 ships a 200k-token context window, while Gemini 3 Flash Preview ships a 1M-token context window. On pricing, Gemini 3 Flash Preview costs $0.5/1M input tokens versus $0.8/1M for the alternative. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit.
Gemini 3 Flash Preview is ~60% cheaper at $0.5/1M; pay for Claude Haiku 4.5 only for coding workflow support.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-10-01 | 2025-12-17 |
| Context window | 200k | 1M |
| Parameters | — | — |
| Architecture | decoder only | decoder only |
| License | Proprietary | Proprietary |
| Knowledge cutoff | 2025-02 | 2025-01 |
Pricing and availability
| Pricing attribute | Claude Haiku 4.5 | Gemini 3 Flash Preview |
|---|---|---|
| Input price | $0.8/1M tokens | $0.5/1M tokens |
| Output price | $4/1M tokens | $3/1M tokens |
| Providers |
Capabilities
| Capability | Claude Haiku 4.5 | Gemini 3 Flash Preview |
|---|---|---|
| Vision | Yes | Yes |
| Multimodal | Yes | Yes |
| Reasoning | No | No |
| Function calling | Yes | Yes |
| Tool use | Yes | Yes |
| Structured outputs | Yes | Yes |
| Code execution | Yes | Yes |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
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 3 Flash Preview lists $0.5/1M input and $3/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Gemini 3 Flash Preview lower by about $0.51 per million blended tokens. Availability is 7 providers versus 3, so concentration risk also matters.
Choose Claude Haiku 4.5 when coding workflow support and broader provider choice are central to the workload. Choose Gemini 3 Flash Preview when coding workflow support, larger context windows, and lower input-token cost are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship. This keeps the decision grounded in measurable tradeoffs instead of brand-level assumptions.
FAQ
Which has a larger context window, Claude Haiku 4.5 or Gemini 3 Flash Preview?
Gemini 3 Flash Preview 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 3 Flash Preview?
Gemini 3 Flash Preview is cheaper on tracked token pricing. Claude Haiku 4.5 costs $0.8/1M input and $4/1M output tokens. Gemini 3 Flash Preview costs $0.5/1M input and $3/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Claude Haiku 4.5 or Gemini 3 Flash Preview open source?
Claude Haiku 4.5 is listed under Proprietary. Gemini 3 Flash Preview 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 3 Flash Preview?
Both Claude Haiku 4.5 and Gemini 3 Flash Preview 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 3 Flash Preview?
Both Claude Haiku 4.5 and Gemini 3 Flash Preview 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 3 Flash Preview?
Claude Haiku 4.5 is available on Microsoft Foundry, Anthropic, Snowflake Cortex, AWS Bedrock, and GCP Vertex AI. Gemini 3 Flash Preview is available on GCP Vertex AI, OpenRouter, and Google AI Studio. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-05-11. Data sourced from public model cards and provider documentation.