Head to head · Open-weight models you run yourself · October 2026 research run
Carbon-X vs Nanbeige4.3-33B
Carbon-X and Nanbeige4.3-33B score within a point of each other on agent readiness, 61 (C) and 61 (C). Nanbeige4.3-33B 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 3341 open weights comparisons
Which one, for what
Carbon-X C
Best for Agents that need a second opinion on DNA variants and regulatory regions on a 16 to 24 GB machine, without sending sequences to a hosted model.
Ahead on
- Reach, 90 against 55
- Risk, 65 against 60
- Documentation and upkeep, 77 against 56
Watch for
Not clinically validated and no wet-lab validation reported
Best for Agents with about 96 GB of GPU memory, or the 128 GB reference machine, that want an Apache-tagged 33B model for long coding and tool loops and can wait for independent results.
Ahead on
- Agent interface, 85 against 35
Watch for
No independent benchmark result yet; every agentic number on the card is Nanbeige's own run
Score by category
| Category | Weight this run | Carbon-X | Nanbeige4.3-33B | Edge |
|---|---|---|---|---|
| Capability | 35%pending | pending | pending | not scored in this run |
| Reach | 25%25 | 90 | 55 | Carbon-X +35 |
| Risk | 20%20 | 65 | 60 | Carbon-X +5 |
| Agent interface | 10%10 | 35 | 85 | Nanbeige4.3-33B +50 |
| Documentation and upkeep | 10%10 | 77 | 56 | Carbon-X +21 |
| Negative events | ≤15 | 0 | 0 | |
| Total | C 61/100 | C 61/100 |
Facts side by side
| Fact | Carbon-X | Nanbeige4.3-33B |
|---|---|---|
| Kind | Open-weight model | Open-weight model |
| Vendor | Hugging Face (HuggingFaceBio) | Nanbeige LLM Lab (BOSS Zhipin) |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | ||
| Auth | None | None |
| Pricing | Free | Free |
| x402 | no | no |
| Licence | Apache-2.0 | Apache-2.0 (Hub metadata only; the repository has no LICENSE file) |
| Read-only variant documented | no | no |
| llms.txt | no | no |
| Last release | 2026-10-22 | 2026-10-24 |
| Terms last updated | no document linked | no document linked |
| Privacy policy last updated | no document linked | no 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 reviews | 3/5 (4) | none |
Verdicts
Carbon-X
A DNA specialist cousin that another agent calls for variant-effect and sequence questions, with DNA kept on the machine. Hugging Face's Q4_K_M GGUF needs about 12 GB and Q8_0 about 19 GB, on llama.cpp b11742 or later. It isn't clinically validated, it isn't trained for tool calls or reasoning, and the card contradicts its own GGUF repository on llama.cpp support.
Nanbeige4.3-33B
A dense 33B Llama-architecture cousin for long agentic coding and office tasks, with per-request thinking, XML tool calls that stock vLLM and SGLang parse, and 512K of context. It needs about 96 GB at BF16, as Nanbeige ships no quantised build. Its agentic results so far are Nanbeige's own, with no safety results, training data notes or licence file.
Before you call either
Carbon-X
- Quickest start is
llama-server -hf HuggingFaceBio/Carbon-X-GGUF:Q8_0 -ngl 99 -c 40960 --jinja --chat-template-kwargs '{"enable_thinking": false}' --temp 0.6 --top-p 0.95 --top-k 20 --min-p 0, on llama.cpp b11742 or later - With vLLM or Transformers pass trust_remote_code, and expect the tokenizer to fetch Qwen/Qwen3-4B-Base at a pinned revision on first load
- Keep enable_thinking false and the card's sampling (temperature 0.6, top_p 0.95, top_k 20), the settings every reported result used
- Keep DNA in files and pass sequences by name, compute positions and base changes in code and send them as context, the card says the model miscounts long sequences
- Only A, C, G and T form 6-mers, so filter N and other IUPAC codes first or they become a single oov token
- Strip the dna tags from answers if you need bare sequence, llama.cpp keeps them in the text
- Cap max_tokens for next-base questions, long DNA generation is slow and degrades
Nanbeige4.3-33B
- Serve with
vllm serve Nanbeige/Nanbeige4.3-33B --enable-auto-tool-choice --reasoning-parser qwen3 --tool-call-parser qwen3_coder, as the card says, or SGLang with the same two parsers - Keep
tool_call_formatat its defaultxml, since qwen3_coder parses that format; thejsonoption writes Hermes-style JSON calls, which need a different parser such as vLLM's hermes - Pass
chat_template_kwargs{"preserve_thinking": true}for multi-turn tool use and coding, and{"enable_thinking": false}to skip reasoning, as the card recommends - Use temperature 1.0, top_p 0.95 and up to 65,536 new tokens for agent work, and temperature 0.6 for reasoning and chat, per the card
- Send your own system prompt, since without one the template injects a Chinese identity line, or a Chinese tool-expert prompt when tools are passed
- Send one system message at the start only, as the template raises an error for a later one
- In plain Transformers pass
use_cache=Trueto generate, since config.json and generation_config.json set it false; trust_remote_code isn't needed
Questions
Which is better for AI agents, Carbon-X or Nanbeige4.3-33B?
Carbon-X and Nanbeige4.3-33B score within a point of each other on agent readiness, 61 (C) and 61 (C). Nanbeige4.3-33B leads on agent interface.
Other comparisons with Carbon-X or Nanbeige4.3-33B
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- Carbon-X vs Gemma 4 31B IT
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- Carbon-X vs Inkling-Small
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- Carbon-X vs Kimi K3
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- Carbon-X vs Laguna M.1
- Carbon-X vs Laguna S 2.1
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- Carbon-X vs Ling-3.0-tiny
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- Carbon-X vs Nemotron 3 Super 120B A12B
- Carbon-X vs Nemotron 3 Ultra 550B A55B
- Carbon-X vs occamy-1.0
- Carbon-X vs Olmo 3 7B Think
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- Carbon-X vs Ornith-1.5-397B
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- Carbon-X vs Qwen3.5-4B
- Carbon-X vs Qwen3.5-9B
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- GLM-5.3-Flash vs Nanbeige4.3-33B
- GLM-5.3 vs Nanbeige4.3-33B
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- Nanbeige4.3-33B vs Qwen3.8-27B
- Nanbeige4.3-33B vs Qwen3.8-Flash-Next
- Nanbeige4.3-33B vs Qwen3-Coder-30B-A3B-Instruct
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- Nanbeige4.3-33B vs Swift 1.5 Qwen3.8-27B
- Nanbeige4.3-33B vs Swift 1.5 Qwen3.8-Flash-Next
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Machine-readable
- This page as Markdown
/compare/carbon-x-vs-nanbeige-4-3-33b.md· slim.min.md· JSON.json(or sendAccept: text/markdown) - Each listing in full
/api/v1/tools/carbon-x.json·/api/v1/tools/nanbeige-4-3-33b.json - From a terminal
anchor compare carbon-x nanbeige-4-3-33b(the CLI) - Over MCP
compare_tools {"a": "carbon-x", "b": "nanbeige-4-3-33b"}at/mcp, no key