Claude Sonnet 5.5
Anthropic's second model in the Claude 5.5 family
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Claude Sonnet 5.5 is Anthropic’s fast, cost-efficient AI model for everyday work: coding, bug fixes, documents, slides, and design. It runs 30%+ faster than Sonnet 5, lowers task costs up to 30%, and delivers stronger coding and knowledge-work performance.
PH · launched Sep 29, 2026 · 223 upvotes (top 1%) · 0 views
Niche: large language models · 191 launches, 4 in the last 7 days ▼ -33% · Explore this niche →
Category and tags
- Horizontal
- Model & infra
- Developer
- AI-native
- Commercial product
- API
- Developer Tools
- Artificial Intelligence
Visit website ↗ Source listing ↗
More like this: all 191 launches in large language models →
Could you build this?
No Frontier foundation language models require massive supercomputing clusters, tens of millions of dollars in compute, novel ML research, and petabytes of curated data.
What it would actually take: Training a frontier LLM requires thousands of interconnected high-end GPUs (e.g., H100/B200 clusters), specialized distributed training frameworks (Megatron-LM, custom Triton kernels), vast web-scale datasets with sophisticated filtering, and top-tier AI research teams specialized in pretraining, post-training, and RLHF/RLAIF.
Competitors
Other products that read as similar to this one : 140 launches clear the similarity bar, closest 8 shown.
Attention rank: #4 of 141 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 268 days after the earliest competitor.
- Claude Opus 5.5 · ph · 2026-09-23 · 287 upvotes · similarity 0.73
- Claude Haiku 5.5 · ph · 2026-10-08 · 281 upvotes · similarity 0.66
- NexPloreInfo · ph · 2026-10-17 · 1 upvotes · similarity 0.63
- Claude Opus 4.7 · ph · 2026-04-17 · 572 upvotes · similarity 0.62
- claude-3-7-extended-thinking-billing · github · 2026-11-06 · 32 upvotes · similarity 0.61
- Claude Design by Anthropic Labs · ph · 2026-04-18 · 550 upvotes · similarity 0.61
- claude-opus-5-5-long-context-guard · github · 2026-11-09 · 39 upvotes · similarity 0.60
- ClaudeEffort · ph · 2026-09-30 · 1 upvotes · similarity 0.59
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