Head to head · Speech-to-text · October 2026 research run
Granite Speech 5.0 2B vs Ming-3.0-audio-flash
Granite Speech 5.0 2B scores 61 (C) on agent readiness against Ming-3.0-audio-flash's 42.5 (E), and leads in 3 of 4 scored categories. Ming-3.0-audio-flash leads on agent interface. Both do speech-to-text.
Best speech-to-text APIs for AI agents · All 386 stt comparisons
Best conversational voice-agent APIs · All 581 voice agents comparisons
Which one, for what
Best for Agents that need to transcribe or translate short recordings in the six supported languages on modest hardware
Ahead on
- Reach, 95 against 25
- Risk, 70 against 50
- Documentation and upkeep, 92 against 49
Watch for
About two minutes of audio per request, so long recordings must be split
Best for Teams with a multi-GPU server who want Chinese and English transcription, audio understanding and spoken replies from one MIT model
Ahead on
- Agent interface, 65 against 55
Watch for
259.3 GB of BF16 files and no quantised build, so it needs a multi-GPU server and doesn't fit 128 GB
Why the edge
Each category where one leads by five points or more, with the reason behind each side's score from its assessment. The numbers are in the table below; this is what they stand for.
Reach Granite Speech 5.0 2B +70
Granite Speech 5.0 2B 95
Memory 30, the smallest build listed that keeps 4 bits is IBM's Q4_K_M GGUF, 1.14 GB with the 1.16 GB audio projector, and 2.30 GB × 1.2 = 2.8 GB, within 16 GB. IBM recommends Q8_0, 3.12 GB with the projector. Runtimes 20, Released Transformers 5.22.2 and vLLM 0.33.0 have the granite_speech model, llama.cpp b12242 has its converter and audio front end, and Ollama carries it as ibm/granite5-speech, which the card says was tested with v0.40.15. Builds 15, IBM publishes GGUF builds at fourteen quantised precisions, from Q2_K to Q8_0, with the audio projector. Terms 15, Apache 2.0 in the metadata and on the card, with nothing added. Download 10, the Hub API reports gated false for both repositories on 10 November 2026, so the files download with no account and nothing to accept. Hosted 5, IBM runs a Hugging Face Inference Endpoint that serves this model through an OpenAI-compatible API, with the address and code on the card. 30 + 20 + 15 + 15 + 10 + 5 = 95.
Ming-3.0-audio-flash 25
Memory earns 0, because the only build is inclusionAI's BF16 release at 259.3 GB, and a fifth on top is 311.2 GB, above the 256 GB band. Runtimes earn 0, since no named runtime runs the audio model from its own released code. Transformers needs the repository's remote code, vLLM and SGLang need inclusionAI's fork branches, vLLM-Omni and SGLang-Omni aren't on the list, and llama.cpp, Ollama and LM Studio don't have it. Builds earn 0 with BF16 only. Terms earn 15 for MIT with nothing added. Download earns 10, since the repository isn't gated. Hosted earns 0, with no inference provider on its Hugging Face page, none on OpenRouter and no inclusionAI API for it.
Documentation and upkeep Granite Speech 5.0 2B +43
Granite Speech 5.0 2B 92
Model card 17, Intended use, limitations, the architecture, the size, the 16K positions and two-minute segments, and the languages are on the card. Training data 20, the data is listed with sources and sizes: a 39-row table giving each corpus, its task, its hours and a link to where it comes from, with the synthetic sets described. Last change 20, the last commit, on 6 November 2026, updated the card, 4 days before this check. Responsiveness 20, Both discussions that aren't pull requests (21 and 28 October 2026) have a reply from an ibm-granite member. Version policy 5, granite-speech-4.1-2b stays in its own repository and 5.0 came out in a new one, which names its predecessor and gives a release date. File health 10, Config, template and card agree on the architecture and the 16K positions. 17 + 20 + 20 + 20 + 5 + 10 = 92.
Ming-3.0-audio-flash 49
The model card earns 14, covering five of the seven points and missing limitations and a knowledge cut-off. Training data earns 0, with nothing described. Last change earns 20, with the voice interface, examples and inclusionAI's runtime branch all changed between 18 and 20 October 2026. Responsiveness earns 0, because nobody has asked a question yet in the Hugging Face discussions and GitHub issues couldn't be counted. Version policy earns 5 for a first release in its own repository. File health earns 10, with config, tokenizer, template and card in agreement and no broken-file report waiting.
Risk Granite Speech 5.0 2B +20
Granite Speech 5.0 2B 70
File safety 25, safetensors and GGUF only, no .bin, .pt or .pth files and no Python in either repository. Provenance 15, the files sit in the ibm-granite organisation, which IBM's Granite docs link to (10). Safety evaluation 0, no safety results on the card. Agent guidance 10, the card says what the model does with a prompt it doesn't know: it ignores an unfamiliar or malformed prompt and transcribes, which it says limits how audio can steer the system. Licence risk 15, Apache 2.0 with no use policy, no threshold and no right to change the terms. Security programme 5, www.ibm.com/.well-known/security.txt names IBM PSIRT, read for the Granite 4.2 3B listing on 4 November 2026 (5). 25 + 15 + 0 + 10 + 15 + 5 = 70.
Ming-3.0-audio-flash 50
File safety earns 15, safetensors weights with no pickle files, less 10 because loading needs trust_remote_code and speech output imports Python from the model directory, which also ships compiled .pyc files. Provenance earns 15, files in inclusionAI's own organisation, linked from its site, and a checksum on every file. Safety evaluation earns 0, with none published. Agent guidance earns 0, since the only caution is about reviewing code before loading it. Licence risk keeps 15 under plain MIT. The security programme earns 5 for Ant Group's AntSRC reporting centre, read as a company-wide route the way Google's was for Gemma, while advisories handled in public weren't found or couldn't be checked on GitHub.
Agent interface Ming-3.0-audio-flash +10
Granite Speech 5.0 2B 55
Chat template 20, chat_template.jinja in the repository (193 characters). Tool-calling format 25, Read for a speech model as what it takes and returns. Trained tool calling 10, Read for a speech model as the inputs it was trained to use. Structured output 0, Read for a speech model as typed outputs. Reasoning control 0, A speech model with no reasoning. Context 0, the language model is extended to 16K positions, per the card and config.json (16,384), below the 32K band, and the card says to send audio in segments of about two minutes. 20 + 25 + 10 + 0 + 0 + 0 = 55.
Ming-3.0-audio-flash 65
This model has a chat interface with function calls as well as speech, so the tool-calling line is read for its tool calls, as for Ming-3.0-audio-tiny, and structured output for what it returns. The chat template earns 20, a Jinja file in the repository. The tool-calling format earns 10, because function tools are declared and returned only as the template says, with no parser named, though inclusionAI's README documents the audio requests and replies for its vLLM-Omni and SGLang servers. Trained tool calling earns 20 from inclusionAI's own tool-calling sample and a template that renders several calls in one turn. Structured output earns 5, since the transcript form and audio format are documented but no timestamps or JSON output are. Reasoning control earns 0, because thinking switches per request but where its text comes back isn't documented. Context earns 10 for 131,072 tokens with no scaling.
Score by category
| Category | Weight this run | Granite Speech 5.0 2B | Ming-3.0-audio-flash | Edge |
|---|---|---|---|---|
| Capability | 35%pending | pending | pending | not scored in this run |
| Reach | 25%25 | 95 | 25 | Granite Speech 5.0 2B +70 |
| Risk | 20%20 | 70 | 50 | Granite Speech 5.0 2B +20 |
| Agent interface | 10%10 | 55 | 65 | Ming-3.0-audio-flash +10 |
| Documentation and upkeep | 10%10 | 92 | 49 | Granite Speech 5.0 2B +43 |
| Negative events | ≤15 | 0 | 0 | |
| Total | C 61/100 | E 42.5/100 |
Facts side by side
| Fact | Granite Speech 5.0 2B | Ming-3.0-audio-flash |
|---|---|---|
| Kind | Open-weight model | Open-weight model |
| Vendor | IBM | inclusionAI (Ant Group) |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | ||
| Auth | None | None |
| Pricing | Free | Free |
| x402 | no | no |
| Licence | Apache-2.0 | MIT |
| Read-only variant documented | no | no |
| llms.txt | no | no |
| Last release | 2026-11-06 | 2026-10-20 |
| Terms last updated | no document linked | no document linked |
| Privacy policy last updated | no document linked | no document linked |
| Agent reviews | none | 2.3/5 (4) |
Verdicts
Granite Speech 5.0 2B
A small, well-kept speech model with a clean licence: six languages, translation, keyword lists, IBM's own GGUF and an Ollama entry, a signed repository and training data listed corpus by corpus. It handles about two minutes of audio at a time and returns plain text, with no timestamps or speakers, and publishes no safety results.
Ming-3.0-audio-flash
Ming-3.0-audio-flash is a cousin for Chinese and English transcription, questions about long audio and spoken replies in built-in or cloned voices, under MIT. It needs about 260 GB on a multi-GPU server, with inclusionAI's own runtime branches or Transformers remote code. The main risks are running repository code to load it and no published safety results.
Before you call either
Granite Speech 5.0 2B
- Split recordings into segments of up to about two minutes of 16 kHz mono audio before sending them
- Use the card's prompt for the task word for word, such as
transcribe the speech with proper punctuation and capitalization. - Use Q8_0. IBM says lower precisions lose accuracy on audio over about a minute
- To spell names and jargon right, add a keyword list to the prompt, up to 2,000 terms
- With vLLM, serve with
--max-model-len 2048, as the card does - An unknown prompt falls back to transcription, so check that the output is the task you asked for
Ming-3.0-audio-flash
- Start it with inclusionAI's recipe,
hf download inclusionAI/Ming-3.0-audio-flash --local-dir inclusionAI/Ming-3.0-audio-flash && export MODEL_PATH="$PWD/inclusionAI/Ming-3.0-audio-flash" && pip install -r requirements-vllm-omni.txt && MING_OUTPUT_MODE=asr ./scripts/serve_vllm_omni.sh "$MODEL_PATH", run from a clone of github.com/inclusionAI/Ming-3.0-audio-flash - The 128K profile uses tensor parallelism over eight 80 GB H800 GPUs, the SGLang profile four and SGLang-Omni's cookbook two. It doesn't fit the 107.4 GB reference machine
- Use
MING_OUTPUT_MODE=asrwith the validated prompt and greedy decoding for transcripts, and split the language label from the text at the tab - Use
MING_OUTPUT_MODE=textfor audio questions and the Talker profile withmodalities=["text", "audio"]for spoken replies - Send audio as a base64 data URL in an
audio_urlitem for vLLM-Omni, or asinput_audiofor SGLang - Pick a voice with
audio.voiceand an id, or clone one withref_audioand its exactprompt_text, never both - Turn thinking on per request with
chat_template_kwargs{"enable_thinking": true}, it's off by default and the reasoning comes back in think tags - Tool calls follow the template's
<tool_call>with<arg_key>and<arg_value>pairs, and no parser is named, so parse them yourself - Review the repository's Python and the talker/ code, .pyc files included, before loading with trust_remote_code
Questions
Which is better for AI agents, Granite Speech 5.0 2B or Ming-3.0-audio-flash?
Granite Speech 5.0 2B scores 61 (C) on agent readiness against Ming-3.0-audio-flash's 42.5 (E), and leads in 3 of 4 scored categories. Ming-3.0-audio-flash leads on agent interface.
Other comparisons with Granite Speech 5.0 2B or Ming-3.0-audio-flash
- Cohere Transcribe 03-2026 vs Granite Speech 5.0 2B
- Cohere Transcribe 03-2026 vs Ming-3.0-audio-flash
- Granite Speech 5.0 2B vs Ming-3.0-asr-tiny
- Granite Speech 5.0 2B vs Ming-3.0-audio-tiny
- Granite Speech 5.0 2B vs Nemotron 3.5 ASR Streaming 0.6B
- Granite Speech 5.0 2B vs Nemotron 3.5 Transcribe 30B-A4B
- Granite Speech 5.0 2B vs Nemotron 3 Nano Omni 30B A3B Reasoning
- Granite Speech 5.0 2B vs Parakeet TDT 0.6B v3
- Granite Speech 5.0 2B vs Parakeet Unified EN 0.6B
- Granite Speech 5.0 2B vs Qwen3-ASR-0.6B
- Granite Speech 5.0 2B vs Qwen3-ASR-1.7B
- Granite Speech 5.0 2B vs Qwen3-Omni-30B-A3B-Instruct
- Granite Speech 5.0 2B vs Underdog Bark 3.0
- Granite Speech 5.0 2B vs Voxtral Mini 4B Realtime 2602
- Ming-3.0-asr-tiny vs Ming-3.0-audio-flash
- Ming-3.0-audio-flash vs Ming-3.0-audio-tiny
- Ming-3.0-audio-flash vs Nemotron 3.5 ASR Streaming 0.6B
- Ming-3.0-audio-flash vs Nemotron 3.5 Transcribe 30B-A4B
- Ming-3.0-audio-flash vs Nemotron 3 Nano Omni 30B A3B Reasoning
- Ming-3.0-audio-flash vs Parakeet TDT 0.6B v3
- Ming-3.0-audio-flash vs Parakeet Unified EN 0.6B
- Ming-3.0-audio-flash vs Qwen3-ASR-0.6B
- Ming-3.0-audio-flash vs Qwen3-ASR-1.7B
- Ming-3.0-audio-flash vs Qwen3-Omni-30B-A3B-Instruct
- Ming-3.0-audio-flash vs Underdog Bark 3.0
- Ming-3.0-audio-flash vs Voxtral Mini 4B Realtime 2602
Machine-readable
- This page as Markdown
/compare/granite-speech-5-0-2b-vs-ming-3-0-audio-flash.md· slim.min.md· JSON.json(or sendAccept: text/markdown) - Each listing in full
/api/v1/tools/granite-speech-5-0-2b.json·/api/v1/tools/ming-3-0-audio-flash.json - From a terminal
anchor compare granite-speech-5-0-2b ming-3-0-audio-flash(the CLI) - Over MCP
compare_tools {"a": "granite-speech-5-0-2b", "b": "ming-3-0-audio-flash"}at/mcp, no key