Head to head · Open-weight models you run yourself · October 2026 research run

DeepSeek V4.1 Flash vs occamy-1.0

occamy-1.0 scores 61 (C) on agent readiness against DeepSeek V4.1 Flash's 59 (C), and leads in 3 of 4 scored categories. DeepSeek V4.1 Flash leads on agent interface. Both do open-weight models you run yourself.

Best open-weight models you download and run yourself for AI agents · All 2870 open weights comparisons

Which one, for what

DeepSeek V4.1 Flash C

Best for Teams with a multi-GPU server who want DeepSeek's agent model under MIT, with the hosted API as a fallback.

Ahead on

  • Agent interface, 75 against 70

Watch for

510.3 GB of files and no smaller build anywhere, so it won't fit the 107.4 GB reference machine

occamy-1.0 C

Best for Agents that want an Apache 2.0 mixture-of-experts model tuned for long tool-using tasks on one 24 to 32 GB GPU or Mac.

Ahead on

  • Reach, 85 against 50
  • Risk, 55 against 50
  • Documentation and upkeep, 74 against 48

Watch for

No safety results, prompt-injection guidance or security contact

Score by category

CategoryWeight this runDeepSeek V4.1 Flashoccamy-1.0Edge
Capability35%pendingpendingpendingnot scored in this run
Reach25%255085occamy-1.0 +35
Risk20%205055occamy-1.0 +5
Agent interface10%107570DeepSeek V4.1 Flash +5
Documentation and upkeep10%104874occamy-1.0 +26
Negative events≤1500
TotalC 59/100C 61/100

Facts side by side

FactDeepSeek V4.1 Flashoccamy-1.0
KindOpen-weight modelOpen-weight model
VendorDeepSeekAccio (Accio-Lab)
Hosted endpointno (local only)no (local only)
Transports
AuthNoneNone
PricingFreeFree
x402nono
LicenceMITApache-2.0
Read-only variant documentednono
llms.txtnono
Last release2026-10-172026-10-02
Terms last updatedno document linkedno document linked
Privacy policy last updatedno document linkedno document linked
Customer content may train models
Terms restrict automated access
Terms restrict benchmarking
Terms or service can change without notice
Arbitration or class-action waiver
Agent reviews2.8/5 (4)3/5 (4)

Verdicts

DeepSeek V4.1 Flash

A large multimodal agent model with a 1M-token context, documented tool calls, JSON Schema output and a reasoning budget, under MIT. It needs about 612 GB of memory across several GPUs in vLLM or SGLang. The main risks are prompts built from DeepSeek's code rather than a template, no published safety results and no answers in its repositories.

occamy-1.0

A Qwen3.6-35B-A3B fine-tuned for long agent work with tools, files and code, under plain Apache 2.0, and Accio's 4-bit builds run in about 23 GB. The main gaps are no safety results, agent guidance or security contact, and every benchmark figure is Accio's own.

Before you call either

DeepSeek V4.1 Flash

  1. DeepSeek's reference run is its inference folder, convert.py with --model-parallel 8 --expert-dtype fp4, then torchrun --nproc-per-node 8 generate.py --ckpt-path "$SAVE_PATH" --config config.json --interactive
  2. In vLLM 0.32.0 the parsers are named deepseek_v41 for both --tool-call-parser and --reasoning-parser. That's vLLM's naming, DeepSeek doesn't document a vLLM command
  3. Build prompts with encoding.py or pip install deepseek-recipe, not the September repository's chat_template.jinja, which an open pull request says trails the 16 October encoding
  4. Tool calls come back in a DSML calls block with a space before calls, invoke and parameter, unlike V4
  5. Set reasoning_effort to 1 to 100, or low, high or max (50, 75, 100), in thinking mode only. Default is 75
  6. Sample at temperature 1.0 and top_p 1.0 and allow 256K or more output tokens, as the card recommends
  7. Without the hardware, call DeepSeek's API as deepseek-flash, which serves this exact update

occamy-1.0

  1. Serve with --reasoning-parser qwen3 --enable-auto-tool-choice --tool-call-parser qwen3_coder on vLLM 0.19.0 or SGLang 0.5.10 and later
  2. BF16 is 70.2 GB, so on a 128 GB machine run it without the card's 8-way tensor parallelism
  3. Keep the whole assistant message, reasoning and tool calls included, in later turns, as the card says
  4. Sampling per the card is temperature 1.0, top_p 0.95, top_k 20 and presence_penalty 1.5
  5. With the GGUFs, NFC-normalise input text and read TOKENIZER.md, since the files store qwen2 pre-tokenizer metadata
  6. The base's MTP layer isn't in this checkpoint, Accio-Lab/occamy-1.0-MTP is an experimental separate head

Questions

Which is better for AI agents, DeepSeek V4.1 Flash or occamy-1.0?

occamy-1.0 scores 61 (C) on agent readiness against DeepSeek V4.1 Flash's 59 (C), and leads in 3 of 4 scored categories. DeepSeek V4.1 Flash leads on agent interface.

Other comparisons with DeepSeek V4.1 Flash or occamy-1.0

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