Claude 3.5 Haiku vs Claude 3.7 Sonnet
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 3.8× cheaper on output tokens ($4.00 vs $15.00 per 1M).
- Context windowTie
Both ship a 200K-token context window.
- BenchmarksTie
No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores.
- ModalitiesTie
Both handle text, vision.
- OpennessTie
Both are closed-weight, API-only.
On balance Claude 3.5 Haiku edges ahead, winning 1 of 5 categories against Claude 3.7 Sonnet's 0. Claude 3.5 Haiku is roughly 3.8× cheaper on output tokens ($4.00 vs $15.00 per 1M). Both ship a 200K-token context window.
No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores. Both target the same set of modalities (text, vision), so the deciding factors are price, context, and raw quality. Both are closed-weight, API-only.
Claude 3.7 Sonnet is the newer of the two, released 4 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 Claude 3.7 Sonnet sees more deployments in coding llm and creative writing. 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 | Claude 3.7 Sonnet |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Released | Nov 2024 | Feb 2025 |
| Modalities | text, vision | text, vision |
| Context window | 200K tokens | 200K tokens |
| Max output | , | , |
| Input · 1M | $0.80 / 1M tokens | $3.00 / 1M tokens |
| Output · 1M | $4.00 / 1M tokens | $15.00 / 1M tokens |
| Knowledge cutoff | , | 2024-10 |
| 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 $31.50
- Heavy usage, 1M in / 500k out per day$84.00 vs $315
- RAG workload, 5M in / 200k out per day$144 vs $540
Light usage, 100k in / 50k out per day: $8.40 vs $31.50 per month, model A comes out ahead. Heavy usage, 1M in / 500k out per day: $84.00 vs $315 per month, model A comes out ahead. RAG workload, 5M in / 200k out per day: $144 vs $540 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
- Claude 3.7 Sonnet$1.05
Benchmarks compared
Only sourced numbers. Where a benchmark is missing for one model we show the available value rather than fabricating the other.
- HumanEval,92.0
- SWE-bench Verified,62.3
Claude 3.5 Haiku fits when…
- Fast
- Cheap for Anthropic
- Strong code at small size
- Cost-sensitive workloads, 3.8× cheaper than Claude 3.7 Sonnet on output tokens.
Claude 3.7 Sonnet fits when…
- First Claude with extended thinking
- Excellent writing and coding quality
- Mature, widely-tested
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 Claude 3.7 Sonnet cheaper?
Claude 3.5 Haiku is cheaper at $4.00 / 1M tokens per million output tokens, vs $15.00 / 1M tokens for Claude 3.7 Sonnet.Which has the larger context window?
Both Claude 3.5 Haiku and Claude 3.7 Sonnet ship a 200K-token context window.Is Claude 3.5 Haiku or Claude 3.7 Sonnet better for coding?
Both Claude 3.5 Haiku and Claude 3.7 Sonnet 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 Claude 3.7 Sonnet released?
Claude 3.5 Haiku was released by Anthropic on 2024-11-04. Claude 3.7 Sonnet was released by Anthropic on 2025-02-24.
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