Grok 4 Fast Non Reasoning vs Voxtral Small 24B 2507
Grok 4 Fast Non Reasoning comes out ahead, 72 to 55 on our weighted score, though Voxtral Small 24B 2507 is 36% cheaper per token.
- Our pick
xAIGrok 4 Fast Non Reasoning
72/100- ECI—
- Price$0.20 / $0.50
- Context2M
Mistral AIVoxtral Small 24B 2507
55/100- ECI—
- Price$0.10 / $0.40
- Context33K
Add a model
Make it a three-way comparison.
Grok 4 Fast Non Reasoning is our pick
Grok 4 Fast Non Reasoning is the better all-round choice, scoring 72/100 against Voxtral Small 24B 2507 (55). It leads on inputs & features and context window. Voxtral Small 24B 2507 wins on price. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
- CapabilityNot enough dataNo independent benchmark covers every model here yet
- Lowest priceVoxtral Small 24B 2507Voxtral Small 24B 2507 $0.175 · Grok 4 Fast Non Reasoning $0.275 per 1M tokens (3:1 blend)
- Longest contextGrok 4 Fast Non ReasoningGrok 4 Fast Non Reasoning 2,000,000 · Voxtral Small 24B 2507 32,768 tokens
- Widest inputsGrok 4 Fast Non ReasoningGrok 4 Fast Non Reasoning: Text, Images, Audio, Video · Voxtral Small 24B 2507: Text, Audio
- Self-hostingVoxtral Small 24B 2507Publishes downloadable weights (Apache 2.0)
| Measure | Weight | Grok 4 Fast Non Reasoning | Voxtral Small 24B 2507 |
|---|---|---|---|
| Price | 50% | 73 | 82 |
| Inputs & features | 30% | 70 | 45 |
| Context window | 20% | 72 | 0 |
| Overall | 100% | 72/100 | 55/100 |
Left out because at least one model lacks the data: capability. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Grok 4 Fast Non ReasoningxAI | Voxtral Small 24B 2507Mistral AI |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | — |
| ECI rank | — | — |
| Price per million tokens | ||
| Input | $0.20 | $0.10 (best) |
| Output | $0.50 | $0.40 (best) |
| Cached input | — | — |
| Blended (3:1) | $0.275 | $0.175 (best) |
| Long-context rate | Same rate | Same rate |
| Price source | Median of 7 providers | Official Mistral API |
| Limits | ||
| Context window | 2,000,000 tokens (best) | 32,768 tokens |
| Max output | 2,000,000 tokens (best) | 32,768 tokens |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | Yes | No |
| PDFs | No | No |
| Audio | Yes | Yes |
| Video | Yes | No |
| Reasoning | No | No |
| Tool calling | Yes | Yes |
| Structured output | No | Yes |
| Availability | ||
| Weights | Proprietary | OpenApache 2.0 |
| API model ID | — | voxtral-small-latest |
| API providers | 8 | 10 (best) |
| Released | Dec 18, 2025 | Jul 15, 2025 |
| Knowledge cutoff | — | — |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Grok 4 Fast Non Reasoning$3.00
- Voxtral Small 24B 2507$1.80
Which should you choose?
Which is better: Grok 4 Fast Non Reasoning or Voxtral Small 24B 2507?
Grok 4 Fast Non Reasoning is the better all-round choice, scoring 72/100 against Voxtral Small 24B 2507 (55). It leads on inputs & features and context window. Voxtral Small 24B 2507 wins on price. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, Grok 4 Fast Non Reasoning or Voxtral Small 24B 2507?
Voxtral Small 24B 2507 is cheaper at $0.10 input / $0.40 output per million tokens (official Mistral API price). Grok 4 Fast Non Reasoning costs $0.20 input / $0.50 output per million tokens (median across 7 API providers). At a typical mix of three input tokens to one output token, that is $0.175 per million tokens for Voxtral Small 24B 2507 versus $0.275 for Grok 4 Fast Non Reasoning (1.6× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. Grok 4 Fast Non Reasoning has not been scored yet and Voxtral Small 24B 2507 has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Grok 4 Fast Non Reasoning and Voxtral Small 24B 2507 yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.
Which has the bigger context window?
Grok 4 Fast Non Reasoning has the largest context window at 2,000,000 tokens, against 32,768 for Voxtral Small 24B 2507. Maximum output per response: Grok 4 Fast Non Reasoning up to 2,000,000, Voxtral Small 24B 2507 up to 32,768 tokens.
Which can read images, PDFs, audio or video?
Grok 4 Fast Non Reasoning accepts text, images, audio and video; Voxtral Small 24B 2507 accepts text and audio. Grok 4 Fast Non Reasoning handles the widest range of inputs.
Are any of these open source?
Voxtral Small 24B 2507 publishes its weights (Apache 2.0) and can be self-hosted; Grok 4 Fast Non Reasoning is proprietary.
Which is newer?
Grok 4 Fast Non Reasoning is the newest, released Dec 18, 2025. Voxtral Small 24B 2507 came out Jul 15, 2025.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Nov 2, 2026.
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