OpenAI o4-mini vs Stable LM 2

Performance benchmarks + pricing comparison — updated April 2026

OpenAI o4-mini

OpenAI

Updated mini reasoning model. Similar pricing to o3-mini with updated capabilities.

Input$1.10/M
Output$4.40/M
Context200K tokens
Best ForGeneral reasoning, coding tasks
Benchmark72/100

Stable LM 2

Stability AI

Stability AI's general-purpose language model. Open weights with competitive performance.

Input$0.100/M
Output$0.400/M
Context32K tokens
Best ForGeneral text generation, multilingual tasks, open-source projects

Cost Comparison by Scenario

Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.

ScenarioOpenAI o4-miniStable LM 2Savings
Small Script (1K lines) $0.17 $0.02 Stable LM 2 saves $0.16 (91%)
Medium Feature (10K lines) $1.27 $0.12 Stable LM 2 saves $1.15 (91%)
Large Project (50K lines) $6.33 $0.58 Stable LM 2 saves $5.75 (91%)
Code Review (5K lines) $0.30 $0.03 Stable LM 2 saves $0.27 (91%)

Verdict

Stable LM 2 wins on both price and performance — $0.100/M input with a benchmark score of N/A/100.

For most developers, this is the clear choice between these two models.

Compare with Other Models