Devstral Medium vs Morph V3 Fast vs Jamba Large
Jamba Large comes out ahead, 35 to 25 and 15 on our weighted score, though Morph V3 Fast is 3.9× cheaper per token.
Mistral AIDevstral Medium
25/100- ECI—
- Price—
- Context128K
Morph
Morph V3 Fast
15/100- ECI—
- Price$0.80 / $1.20
- Context262K
- Our pick
AI21 LabsJamba Large
35/100- ECI—
- Price$2.00 / $8.00
- Context256K
Jamba Large is our pick
Jamba Large is the better all-round choice, scoring 35/100 against Devstral Medium (25) and Morph V3 Fast (15). It leads on inputs & features. 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 priceMorph V3 FastMorph V3 Fast $0.90 · Jamba Large $3.50 per 1M tokens (3:1 blend) · Devstral Medium unpriced
- Longest contextMorph V3 FastMorph V3 Fast 262,144 · Jamba Large 256,000 · Devstral Medium 128,000 tokens
- Widest inputsSame inputsDevstral Medium: Text · Morph V3 Fast: Text · Jamba Large: Text
- Self-hostingJamba LargePublishes downloadable weights
| Measure | Weight | Devstral Medium | Morph V3 Fast | Jamba Large |
|---|---|---|---|---|
| Inputs & features | 60% | 25 | 0 | 35 |
| Context window | 40% | 24 | 37 | 36 |
| Overall | 100% | 25/100 | 15/100 | 35/100 |
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 | Morph V3 FastMorph | Jamba LargeAI21 Labs |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | — | — | — |
| ECI rank | — | — | — |
| Price per million tokens | |||
| Input | — | $0.80 (best) | $2.00 |
| Output | — | $1.20 (best) | $8.00 |
| Cached input | — | — | — |
| Blended (3:1) | — | $0.90 (best) | $3.50 |
| Long-context rate | — | Same rate | Same rate |
| Price source | — | Median of 5 providers | Official AI21 Labs API |
| Limits | |||
| Context window | 128,000 tokens | 262,144 tokens (best) | 256,000 tokens |
| Max output | 128,000 tokens | 131,072 tokens (best) | 4,096 tokens |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | No | No | No |
| PDFs | No | No | No |
| Audio | No | No | No |
| Video | No | No | No |
| Reasoning | No | No | No |
| Tool calling | Yes | No | Yes |
| Structured output | No | No | Yes |
| Availability | |||
| Weights | Proprietary | Proprietary | Open |
| API model ID | — | — | jamba-large |
| API providers | — | 5 (best) | 1 |
| Released | Jul 10, 2025 | Jul 7, 2025 | Jul 3, 2025 |
| Knowledge cutoff | May 2025 | — | Aug 22, 2024 |
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—
- Morph V3 Fast$10.40
- Jamba Large$36.00
Which should you choose?
Which is better: Devstral Medium, Morph V3 Fast or Jamba Large?
Jamba Large is the better all-round choice, scoring 35/100 against Devstral Medium (25) and Morph V3 Fast (15). It leads on inputs & features. 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, Morph V3 Fast or Jamba Large?
Morph V3 Fast is cheaper at $0.80 input / $1.20 output per million tokens (median across 5 API providers). Jamba Large costs $2.00 input / $8.00 output per million tokens (official AI21 Labs API price). At a typical mix of three input tokens to one output token, that is $0.90 per million tokens for Morph V3 Fast versus $3.50 for Jamba Large (3.9× as much). Devstral Medium has no published per-token price.
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. Devstral Medium has not been scored yet, Morph V3 Fast has not been scored yet and Jamba Large has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Devstral Medium, Morph V3 Fast and Jamba Large yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Note that Morph V3 Fast does not support tool calling, which most coding agents need.
Which has the bigger context window?
Morph V3 Fast has the largest context window at 262,144 tokens, against 256,000 for Jamba Large and 128,000 for Devstral Medium. Maximum output per response: Devstral Medium up to 128,000, Morph V3 Fast up to 131,072, Jamba Large up to 4,096 tokens.
Which can read images, PDFs, audio or video?
Devstral Medium accepts text; Morph V3 Fast accepts text; Jamba Large accepts text. They handle the same number of input types.
Are any of these open source?
Jamba Large publishes its weights and can be self-hosted; Devstral Medium and Morph V3 Fast is proprietary.
Which is newer?
Devstral Medium is the newest, released Jul 10, 2025. Morph V3 Fast came out Jul 7, 2025; Jamba Large came out Jul 3, 2025. Knowledge cutoff: Devstral Medium May 2025, Jamba Large Aug 22, 2024.
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.
