ModelRefs / Claude 3.5 Haiku vs Claude 3.7 Sonnet
Claude 3.5 Haiku vs Claude 3.7 Sonnet
Claude 3.5 Haiku vs Claude 3.7 Sonnet: side-by-side benchmarks, pricing, context windows, coding ability and deployment. Pick the right model for your stack.
Overview
Claude 3.5 Haiku: Claude 3.5 Haiku is Anthropic's fast, low-cost model from late 2024, built for high-volume work such as classification, extraction and routing across a 200,000-token context window. The claude-3-5-haiku-20241022 snapshot was deprecated on 19 December 2025 and retired on Anthropic-operated platforms on 19 February 2026, with Claude Haiku 4.5 named as its replacement.
Claude 3.7 Sonnet: Claude 3.7 Sonnet is Anthropic's February 2025 hybrid reasoning model, combining immediate answers with an optional extended thinking mode in a single model rather than two. Thinking can be budgeted by token count up to a 128,000-token output limit, across a 200,000-token context window. The claude-3-7-sonnet-20250219 snapshot was deprecated on 28 October 2025 and retired on Anthropic-operated platforms on 19 February 2026.
Context window: Claude 3.5 Haiku accepts up to 200,000 tokens, Claude 3.7 Sonnet up to 200,000. Confirm the limit for your specific deployment channel before relying on it.
Claude 3.5 Haiku vs Claude 3.7 Sonnet at a glance
| Attribute | Claude 3.5 Haiku | Claude 3.7 Sonnet |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Released | 2024-11-04 | 2025-02-24 |
| Context window | 200,000 tokens | 200,000 tokens |
| Input price | $0.8/M tokens | $3/M tokens |
| Output price | $4/M tokens | $15/M tokens |
| Licence | Proprietary | Proprietary |
| Self-hostable | No, hosted only | No, hosted only |
| Modalities | text | text, vision |
Where they differ most
- Cost Efficiency: Claude 3.5 Haiku 65%, Claude 3.7 Sonnet 37%. Claude 3.5 Haiku leads on this dimension.
Capability scores are ModelRefs' own derived signals, not vendor claims or benchmark results. Validate against your own workload before relying on them.
Continue your research
Use these connected ModelRefs sections to compare alternatives, inspect implementation paths, and review the evidence and governance boundaries relevant to Claude 3.5 Haiku vs Claude 3.7 Sonnet.
Frequently asked questions
Which is better, Claude 3.5 Haiku or Claude 3.7 Sonnet?
Claude 3.5 Haiku and Claude 3.7 Sonnet target different workloads — see the benchmark and pricing tables for a side-by-side answer.
Is Claude 3.5 Haiku cheaper than Claude 3.7 Sonnet?
Compare $0.00080 vs $0.00300 on this page.