Devstral Medium vs ERNIE 4.5 21B A3B
Too close to call on our weighted score (ERNIE 4.5 21B A3B 25, Devstral Medium 25). The right pick depends on what you value most.
Mistral AIDevstral Medium
25/100- ECI—
- Price—
- Context128K
BaiduERNIE 4.5 21B A3B
25/100- ECI—
- Price$0.07 / $0.28
- Context131K
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Make it a three-way comparison.
Too close to call
It is close. Our weighted score puts them within a point (ERNIE 4.5 21B A3B 25/100, Devstral Medium 25/100), so choose by what matters most for your work: ERNIE 4.5 21B A3B on price and ERNIE 4.5 21B A3B for long inputs. The score weighs inputs & features 60%, context window 40%. 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 priceERNIE 4.5 21B A3BERNIE 4.5 21B A3B $0.122 per 1M tokens (3:1 blend) · Devstral Medium unpriced
- Longest contextERNIE 4.5 21B A3BERNIE 4.5 21B A3B 131,072 · Devstral Medium 128,000 tokens
- Widest inputsSame inputsDevstral Medium: Text · ERNIE 4.5 21B A3B: Text
- Self-hostingERNIE 4.5 21B A3BPublishes downloadable weights (Apache-2.0)
| Measure | Weight | Devstral Medium | ERNIE 4.5 21B A3B |
|---|---|---|---|
| Inputs & features | 60% | 25 | 25 |
| Context window | 40% | 24 | 25 |
| Overall | 100% | 25/100 | 25/100 |
Left out because at least one model lacks the data: capability and price. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Devstral MediumMistral AI | ERNIE 4.5 21B A3BBaidu |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | — |
| ECI rank | — | — |
| Price per million tokens | ||
| Input | — | $0.07 |
| Output | — | $0.28 |
| Cached input | — | — |
| Blended (3:1) | — | $0.122 |
| Long-context rate | — | Same rate |
| Price source | — | Median of 1 providers |
| Limits | ||
| Context window | 128,000 tokens | 131,072 tokens (best) |
| Max output | 128,000 tokens (best) | 8,000 tokens |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | No | No |
| PDFs | No | No |
| Audio | No | No |
| Video | No | No |
| Reasoning | No | No |
| Tool calling | Yes | Yes |
| Structured output | No | No |
| Availability | ||
| Weights | Proprietary | OpenApache-2.0 |
| API model ID | — | — |
| API providers | — | 1 |
| Released | Jul 10, 2025 | Jun 30, 2025 |
| Knowledge cutoff | May 2025 | — |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Devstral Medium—
- ERNIE 4.5 21B A3B$1.26
Which should you choose?
Which is better: Devstral Medium or ERNIE 4.5 21B A3B?
It is close. Our weighted score puts them within a point (ERNIE 4.5 21B A3B 25/100, Devstral Medium 25/100), so choose by what matters most for your work: ERNIE 4.5 21B A3B on price and ERNIE 4.5 21B A3B for long inputs. The score weighs inputs & features 60%, context window 40%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, Devstral Medium or ERNIE 4.5 21B A3B?
ERNIE 4.5 21B A3B is cheaper at $0.07 input / $0.28 output per million tokens (median across 1 API provider). . At a typical mix of three input tokens to one output token, that is $0.122 per million tokens for ERNIE 4.5 21B A3B versus . Devstral Medium has no published per-token price.
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. Devstral Medium has not been scored yet and ERNIE 4.5 21B A3B has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Devstral Medium and ERNIE 4.5 21B A3B 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?
ERNIE 4.5 21B A3B has the largest context window at 131,072 tokens, against 128,000 for Devstral Medium. Maximum output per response: Devstral Medium up to 128,000, ERNIE 4.5 21B A3B up to 8,000 tokens.
Which can read images, PDFs, audio or video?
Devstral Medium accepts text; ERNIE 4.5 21B A3B accepts text. They handle the same number of input types.
Are any of these open source?
ERNIE 4.5 21B A3B publishes its weights (Apache-2.0) and can be self-hosted; Devstral Medium is proprietary.
Which is newer?
Devstral Medium is the newest, released Jul 10, 2025. ERNIE 4.5 21B A3B came out Jun 30, 2025. Knowledge cutoff: Devstral Medium May 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.
