GPT-5.2-Codex vs Inkling-Small
| Spec | GPT-5.2-Codex | Inkling-Small |
|---|---|---|
| Respan Index | 29.7 (#83) | 29.4 (#84) |
| Blended price per 1M | $4.81 | $0.637 |
| Context window | 400K | 1M |
| Input / output per 1M | $1.75 / $14 | $0.45 / $1.2 |
| Max output | 128K | - |
| Input | text, vision | text, vision, audio |
| Released | 2025-12-18 | 2026-07-30 |
Respan Index by category
Each category is scored 0 to 100, and how far ahead the winner is. Leads under a point are close to even.
| Category | GPT-5.2-Codex | Inkling-Small |
|---|---|---|
| Coding | 18.3 GPT-5.2-Codex | 6.8 Inkling-Small |
| Agents | 21.5 GPT-5.2-Codex | 41.2 Inkling-Small |
| Reasoning | 35.7 GPT-5.2-Codex | 31.7 Inkling-Small |
| Knowledge & language | 34.5 GPT-5.2-Codex | 19.1 Inkling-Small |
| Human preference | 49.0 GPT-5.2-Codex | 50.6 Inkling-Small |
Benchmarks both report
Inkling-Small leads on 1 of the 1 benchmarks both report. Higher is better. Each score links to where it was published.
| Benchmark | GPT-5.2-Codex | Inkling-Small |
|---|---|---|
| LMArena WebDev (LMArena) | 1339 | 1409 |
FAQ
Is GPT-5.2-Codex better than Inkling-Small?
GPT-5.2-Codex scores 29.7 on the Respan Index (#83), ahead of Inkling-Small at 29.4 (#84). Inkling-Small leads on 1 of the 1 benchmarks both report.
Which is cheaper, GPT-5.2-Codex or Inkling-Small?
GPT-5.2-Codex lists at $1.75 input and $14 output per 1M tokens; Inkling-Small at $0.45 and $1.2. Inkling-Small is 7.5x cheaper per token at list price.
Which has the larger context window?
GPT-5.2-Codex accepts 400K tokens and Inkling-Small 1M tokens.