JetBrains AI Mellum2 12B A2.5B Thinking
JetBrains AI Mellum2 12B A2.5B Thinking is Jetbrains's language model. A 12B-parameter mixture-of-experts code-focused language model from JetBrains with a 2.5B active parameter thinking variant, optimized for developer workflows.
Capabilities
Input1/5
Text✓
Image·
Audio·
Video·
PDF·
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·
Cheapest Instances to Run It
Cloud GPU instances that can host JetBrains AI Mellum2 12B A2.5B Thinking, ranked by cheapest on-demand price. The model needs about 29 GB of GPU memory at FP16 precision (estimated from its parameter count), so treat the fit as guidance rather than a guarantee.
All clouds
FP16 (full precision)
US Dollar ($)
Instance | Cloud | GPU | VRAM | Price | Cheapest region | |
|---|---|---|---|---|---|---|
| Standard_NV16as_v4 |  Azure | AMD Radeon Instinct MI25 | 32 GB | $0.932/hr | ||
| Standard_NP10s | Azure | AMD Alveo U250 FPGA (64GB) | 64 GB | $1.65/hr | ||
| g6e.xlarge |  AWS | L40S | 45 GB | $1.86/hr | ||
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| JetBrains AI Mellum2 12B A2.5B Thinking | — | — | — | — | Current |
| JetBrains AI Mellum All | — | — | — | — | Available |
| JetBrains AI Mellum Kotlin | — | — | — | — | Available |
| JetBrains AI Mellum Python | — | — | — | — | Available |