Model comparison · text
Devstral-2-123B-Instruct-2512 vs gpt-oss-120b
Symmetrical, primary-source facts with unknown values left visible. No winner is assigned without comparable measurements.
FieldAt a glance
Mistral AI · activeDevstral-2-123B-Instruct-2512Verified Aug 28, 2026
OpenAI · activegpt-oss-120bVerified Aug 28, 2026
Technical differences
Side-by-side facts
| Field | Devstral-2-123B-Instruct-2512 | gpt-oss-120b |
|---|---|---|
| Developer | Mistral AI | OpenAI |
| Family | Devstral 2 123b Instruct 2512 | Gpt Oss 120b |
| Model | Devstral-2-123B-Instruct-2512 | gpt-oss-120b |
| Version | Devstral-2-123B-Instruct-2512 | gpt-oss-120b |
| Lifecycle | active | active |
| Input modalities | Text | Text |
| Output modalities | Text | Text |
| Context window | 262144 | 131072 |
| Total parameters | 125025989840 | 116829156672 |
| Active parameters | Unknown | 5100000000 |
| License | other | apache-2.0 |
| Open weights | Yes | Yes |
| API available | Unknown | Yes |
| Self-hostable | Yes | Yes |
| Capabilities | chat, generation, tools | chat, generation, reasoning, tools |
13 comparable fields · 8 material differences · Pair passes the primary-source comparison gate
Primary benchmark evidence
Comparable performance
No protocol-matched benchmark yet.Results appear here only when both models share the same benchmark version, metric, evaluation protocol, and evidence class.
Devstral-2-123B-Instruct-2512 capabilities
Input price—
Output price—
Serving providers0
Canonical IDmistralai/Devstral-2-123B-Instruct-2512
gpt-oss-120b capabilities
Input price$0.037
Output price$0.17
Serving providers5
Canonical IDopenai/gpt-oss-120b
Internal comparison graph
Related comparisons
Primary evidence