There is certainly a difference, however Anthropic did really well with 3.5 - far, far better than any other provider could do, so the steps from there been mor

There is certainly a difference, however Anthropic did really well with 3.5 - far, far better than any other provider could do, so the steps from there been more incremental while other providers have been playing catch up (for example Google's Gemini 2.5 Pro is really their first model that's actually useful for coding in any way).