gpt-oss-120b is 92.6× cheaper per million tokens (blended). gpt-oss-120b has the larger context window (131,072 vs 128,000 tokens). gpt-oss-120b is open-weights; the other is not.
gpt-oss-120b vs Sonar Reasoning Pro
Live catalog fields. Best-in-row is highlighted.
gpt-oss-120bopen
OpenAI · openai__gpt-oss-120b
Sonar Reasoning Pro
Perplexity · perplexity__sonar-reasoning-pro
Identity
| Field | openai__gpt-oss-120b | perplexity__sonar-reasoning-pro |
|---|---|---|
| Provider | OpenAI | Perplexity |
| Slug | openai__gpt-oss-120b | perplexity__sonar-reasoning-pro |
| Status | live | live |
| Open weights | Yes | No |
| License | — | — |
| HuggingFace | openai/gpt-oss-120b | — |
Quality
| Field | openai__gpt-oss-120b | perplexity__sonar-reasoning-pro |
|---|---|---|
| Quality index (0–100) | — | — |
Cost
| Field | openai__gpt-oss-120b | perplexity__sonar-reasoning-pro |
|---|---|---|
| Input $ / 1M tokens | $0.02 | $2.00 |
| Cached input $ / 1M | $0.02 | — |
| Output $ / 1M tokens | $0.09 | $8.00 |
Context
| Field | openai__gpt-oss-120b | perplexity__sonar-reasoning-pro |
|---|---|---|
| Max context tokens | 131,072 | 128,000 |
| Max output tokens | 65,536 | 115,200 |
Modalities
| Field | openai__gpt-oss-120b | perplexity__sonar-reasoning-pro |
|---|---|---|
| Input | text | text, image |
| Output | text | text |