DeepSeek V4.1 Flash hands-on tests and comparisons

A roundup of free coding quotas at three Chinese platforms, all offering DeepSeek V4.1 Flash among their free models.

An AI-text detector rated DeepSeek V4.1 Flash 84.66% likely GPT-6 Astra and 90.71% GPT-family, prompting speculation about style convergence or proxy model swaps.

A video runs the pelican test with V4.1 Flash-1017 in Qoder, with the author saying Qoder's tuning for DeepSeek is good and worth trying.

Users wary of data going to China can access V4.1 Flash-1017 via Ollama Cloud; the $10 plan is usable and measured at about 280 tok/s.

A Vietnamese-language brief reports DeepSeek released V4.1-Flash-1017, claiming faster speed and improved reasoning, coding and agent capabilities.

The post claims Flash-1017 scores 77.0 on DeepSWE vs Opus 5.5's 74.0, costs $0.24 per million output tokens, is free in OpenCode, and cuts a heavy REA run from $50 to 35 cents.

A brief hands-on impression says V4.1 Flash improved notably in video and modeling work, framing parity with Claude as a win, without concrete tests or numbers.

A breakdown of DeepSeek's docs: only successful calls are billed, count up to 50 at no extra cost, fetch only results with rerank_score above 1.5, 5 QPS per account, plus vendor Terminal-Bench 4.0 numbers of 42.3 vs Opus 5's 51.8.

The author benchmarks V4.1 Flash 1017 with YourLocalAILab's vLLM fork on four RTX 6000 Pro GPUs against a GLM 5.3 Flash setup, concluding the new DeepSeek model is now their local default.

A custom induction benchmark finds V4.1 Flash-1017 clearly better than other DeepSeek models, landing between GPT-5.6 Luna and GPT-6 Luna — decent but not impressive.

A Persian-language post says DeepSeek's V4.1-Flash-1017 is better at reasoning, coding and agent tasks, runs faster with fewer tokens, is live on site and app, and API pricing is unchanged.

A user reports burning over 4B tokens in 30 days with DeepSeek V4.1 and Muse Spark in OpenCode Go, with no complaints and no sense of missing Gemini Ultra or GPT-6 Astra.