Windsurf Reddit mentions fell 34.3% week-over-week — from 332 to 218 — while Anthropic grew 6.1% to 718 mentions, the only tool gaining in a market that slipped 1.9% to 8,724 total mentions. Claude dominated Hacker News with 4,534 score across 4 stories. On NPM, the Anthropic SDK climbed to 12.8M weekly downloads — 80.5% of OpenAI's 15.9M.
Key Findings — Week of Mar 30 – Apr 5
- Windsurf: -34.3% WoW — 332 → 218 Reddit mentions, the steepest weekly decline of any tracked tool
- Anthropic: +6.1% WoW — the only tool in the top 10 to grow (677 → 718)
- Claude leads Hacker News — 4 stories generating 4,534 total score vs zero Claude stories the prior week
- GitHub Copilot: -14.3% — second consecutive weekly decline (476 → 408)
- Anthropic SDK: 12.8M NPM weekly — 80.5% of OpenAI's 15.9M
Reddit Mentions: Mar 30 – Apr 5, 2026
Biggest Decline
Only Gainer
(8,724 mentions)
| Rank | Tool | This Week | Last Week | Change | Engagement |
|---|---|---|---|---|---|
| 1 | Cursor | 1,025 | 1,025 | 0.0% | 2,598 (2.5x) |
| 2 | Claude | 950 | 938 | +1.3% | 1,296 (1.4x) |
| 3 | ChatGPT | 947 | 916 | +3.4% | 1,864 (2.0x) |
| 4 | v0 | 938 | 985 | -4.8% | 4,707 (5.0x) |
| 5 | OpenAI | 887 | 889 | -0.2% | 5,428 (6.1x) |
| 6 | Lovable | 778 | 785 | -0.9% | 5,541 (7.1x) |
| 7 | Anthropic | 718 | 677 | +6.1% | 3,850 (5.4x) |
| 8 | GitHub Copilot | 408 | 476 | -14.3% | 2,604 (6.4x) |
| 9 | Replit | 283 | 322 | -12.1% | 546 (1.9x) |
| 10 | Windsurf | 218 | 332 | -34.3% | 1,665 (7.6x) |
Note: "Continue" (1,007 mentions) and "Aider" (560) are excluded from the ranking narrative — both match common words in non-English subreddits, inflating counts. Raw data included for transparency.
Biggest Movers
Windsurf — Steepest Drop Since Tracking Began
-34.3% WoW 332 → 218Windsurf's 218 mentions mark its lowest weekly total in over a month. The tool peaked at 334 mentions in the week of , suggesting the post-rebrand buzz has fully dissipated. Despite the volume decline, engagement remains strong at 7.6x — the highest of any tracked tool — indicating the remaining discussion is high-quality.
Anthropic — Only Gainer in a Flat Market
+6.1% WoW 677 → 718In a market that declined 1.9% overall, Anthropic was the sole tool to grow. This is the second consecutive week of Anthropic Reddit growth, and it coincides with the Anthropic SDK's continued NPM acceleration to 12.8M weekly downloads.
GitHub Copilot — Second Consecutive Double-Digit Drop
-14.3% WoW 476 → 408GitHub Copilot fell from 476 to 408 mentions — its second week of double-digit decline. The 6.4x engagement ratio shows posts are still generating discussion, but the declining volume suggests attention is migrating elsewhere in the AI coding assistant space.
Hacker News: Claude Dominates
Claude had a standout week on Hacker News with 4 stories generating 4,534 combined score — the highest single-tool weekly score we've tracked in 2026. The prior week had zero Claude stories on HN, making this a spike rather than a trend. For context, the entire HN AI tool discussion last week totaled 1,277 score across 2 stories.
| Tool | Stories | Total Score | Last Week |
|---|---|---|---|
| Claude | 4 | 4,534 | 0 |
| Anthropic | 1 | 596 | 0 |
| Cursor | 1 | 383 | 0 |
| Windsurf | 1 | 42 | 0 |
Stack Overflow: ChatGPT Questions Halve
Cursor held steady at 12 questions, while ChatGPT dropped from 8 to 4 and Claude fell from 12 to 8. The small absolute numbers make percentages volatile, but the pattern of Cursor leading SO consistently while ChatGPT declines has held for multiple weeks.
| Tool | This Week | Last Week | Change | Views |
|---|---|---|---|---|
| Cursor | 12 | 12 | 0% | 382 |
| Claude | 8 | 12 | -33% | 178 |
| ChatGPT | 4 | 8 | -50% | 141 |
| OpenAI | 3 | 4 | -25% | 90 |
| v0 | 2 | 0 | NEW | 35 |
| GitHub Copilot | 2 | 4 | -50% | 46 |
NPM Downloads
The Anthropic SDK continues closing the gap on OpenAI — 12.8M weekly vs 15.9M (80.5%). Vercel's AI SDK crossed 10.1M weekly for the first time. The xAI provider (@ai-sdk/xai) holds above 1.0M weekly.
| Package | Weekly | Monthly |
|---|---|---|
| openai | 15.9M | 70.8M |
| @anthropic-ai/sdk | 12.8M | 46.5M |
| ai (Vercel) | 10.1M | 44.1M |
| @langchain/core | 3.4M | 15.4M |
| @google/generative-ai | 2.5M | 10.6M |
| langchain | 2.1M | 9.6M |
| @ai-sdk/xai | 1.1M | 4.4M |
| ollama | 446K | 2.0M |
GitHub Stars: Top 10
| Rank | Repository | Stars | Forks |
|---|---|---|---|
| 1 | tensorflow/tensorflow | 191,500 | 74,814 |
| 2 | microsoft/vscode | 183,680 | 39,100 |
| 3 | Significant-Gravitas/AutoGPT | 183,297 | 46,232 |
| 4 | ollama/ollama | 168,457 | 15,500 |
| 5 | AUTOMATIC1111/stable-diffusion-webui | 156,211 | 28,990 |
| 6 | huggingface/transformers | 149,229 | 30,280 |
| 7 | anomalyco/opencode | 141,001 | 15,733 |
| 8 | langchain-ai/langchain | 133,057 | 21,958 |
| 9 | anthropics/skills | 114,504 | 13,076 |
| 10 | langgenius/dify | 113,205 | 17,336 |
What This Data Shows
1. Windsurf's Post-Rebrand Momentum Has Stalled
A 34.3% weekly decline brings Windsurf back to pre-spike levels. The mid-March surge appears to have been a one-time event-driven spike rather than sustained growth. The 7.6x engagement ratio suggests a loyal user base, but the shrinking mention volume points to limited mindshare expansion.
2. Anthropic's Growth Is Multi-Signal
Anthropic is the only tool growing on Reddit (+6.1%), its SDK is at 12.8M NPM weekly (80.5% of OpenAI), and Claude dominated Hacker News this week. When a single company is growing across Reddit mentions, SDK downloads, and HN attention simultaneously, it signals broad developer ecosystem momentum rather than a single viral event.
3. The Market Is Flat, Not Declining
Total mentions at 8,724 are down just 1.9% — essentially flat. The top 5 (Cursor, Claude, ChatGPT, v0, OpenAI) are all within 2% of their prior week. The movement is at the edges: Windsurf, Copilot, and Replit are losing share while Anthropic gains.
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