| Signal | gpt-oss-120b | Delta | Devstral Medium |
|---|---|---|---|
Capabilities | 67 | +17 | |
Benchmarks | 46 | +3 | |
Pricing | 100 | +2 | |
Context window size | 81 | -- | |
Recency | 82 | +5 | |
Output Capacity | 20 | -- | |
| Overall Result | 4 wins | of 6 | 0 wins |
Score History
40.5
current score
Devstral Medium
right now
45.3
current score
OpenAI
Mistral AI
gpt-oss-120b saves you $127.10/month
That's $1525.20/year compared to Devstral Medium at your current usage level of 100K calls/month.
| Metric | gpt-oss-120b | Devstral Medium | Winner |
|---|---|---|---|
| Overall Score | 41 | 45 | Devstral Medium |
| Rank | #182 | #178 | Devstral Medium |
| Quality Rank | #182 | #178 | Devstral Medium |
| Adoption Rank | #182 | #178 | Devstral Medium |
| Parameters | 120B | -- | -- |
| Context Window | 131K | 131K | -- |
| Pricing | $0.04/$0.18/M | $0.40/$2.00/M | -- |
| Signal Scores | |||
| Capabilities | 67 | 50 | gpt-oss-120b |
| Benchmarks | 46 | 43 | gpt-oss-120b |
| Pricing | 100 | 98 | gpt-oss-120b |
| Context window size | 81 | 81 | gpt-oss-120b |
| Recency | 82 | 78 | gpt-oss-120b |
| Output Capacity | 20 | 20 | gpt-oss-120b |
Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.
Scores 41/100 (rank #182), placing it in the top 38% of all 290 models tracked.
Scores 45/100 (rank #178), placing it in the top 39% of all 290 models tracked.
With only a 5-point gap, these models are in the same performance tier. The practical difference in output quality is minimal - your choice should depend on pricing, latency requirements, and specific feature needs.
gpt-oss-120b offers 91% better value per quality point. At 1M tokens/day, you'd spend $3.28/month with gpt-oss-120b vs $36.00/month with Devstral Medium - a $32.72 monthly difference.
Both models have comparable response speeds. For most applications, the latency difference is negligible.
When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.
Code generation & review
Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Suitable for user-facing chat with competitive response times. gpt-oss-120b also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (131K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($0.18/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (45/100) correlates with better nuance, coherence, and style in long-form content
Devstral Medium has a moderate advantage with a 4.799999999999997-point lead in composite score. It wins on more signal dimensions, but gpt-oss-120b has specific strengths that could make it the better choice for certain workflows.
Best for Quality
gpt-oss-120b
Marginally better benchmark scores; both are excellent
Best for Cost
gpt-oss-120b
91% lower pricing; better value at scale
Best for Reliability
gpt-oss-120b
Higher uptime and faster response speeds
Best for Prototyping
gpt-oss-120b
Stronger community support and better developer experience
Best for Production
gpt-oss-120b
Wider enterprise adoption and proven at scale
by OpenAI
| Capability | gpt-oss-120b | Devstral Medium |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoningdiffers | ||
| Web Search | ||
| Image Output |
OpenAI
Mistral AI
gpt-oss-120b saves you $2.83/month
That's 91% cheaper than Devstral Medium at 1,000 tokens/request and 100 requests/day.
Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.
| Parameter | gpt-oss-120b | Devstral Medium |
|---|---|---|
| Context Window | 131K | 131K |
| Max Output Tokens | -- | -- |
| Open Source | Yes | No |
| Created | Aug 5, 2025 | Jul 10, 2025 |