GPT-5.2 vs GPT-5.5
Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.
GPT-5.2
OpenAI · Dec 2025
The December 2025 GPT-5 refresh: stronger coding and agentic skills than GPT-5.1 at a moderate price, now the value pick in OpenAI's lineup.
GPT-5.5
77.2OpenAI · Apr 2026
OpenAI's flagship reasoning model with a 1M-token context window, built for hard coding, science and long-horizon agentic work.
The verdict
GPT-5.5 wins 1 of the 1 benchmarks these models share, against 0 for GPT-5.2. GPT-5.2 is about 2.3x cheaper per blended million tokens (3:1 input:output mix). GPT-5.5 also takes 1M of context versus 400K for GPT-5.2.
Benchmark head-to-head 0–1
Specs & pricing
| GPT-5.2 | GPT-5.5 | |
|---|---|---|
| modhub Index | — | 77.2 |
| Input price / 1M | $1.75 | $5 |
| Output price / 1M | $14 | $30 |
| Context window | 400K | 1M |
| Max output | 128K | 128K |
| Open weights | no | no |
| Reasoning model | yes | yes |
| Multimodal input | text, image | text, image |
| Knowledge cutoff | Aug 2025 | Jan 2026 |
| Released | Dec 2025 | Apr 2026 |
| Example monthly cost* | $38.50 | $95.00 |
* 10M input + 1.5M output tokens per month at list prices, no caching. Green = better value on that row.
Frequently asked questions
- Which is better, GPT-5.2 or GPT-5.5?
- GPT-5.5 wins 1 of the 1 benchmarks these models share, against 0 for GPT-5.2. GPT-5.2 is about 2.3x cheaper per blended million tokens (3:1 input:output mix). GPT-5.5 also takes 1M of context versus 400K for GPT-5.2.
- Which is cheaper, GPT-5.2 or GPT-5.5?
- GPT-5.2 costs $1.75/$14 per million input/output tokens, while GPT-5.5 costs $5/$30. For a typical workload of 10M input and 1.5M output tokens per month, that's $38.50 versus $95.00.
- Which model is better for coding, GPT-5.2 or GPT-5.5?
- On SWE-bench Verified — the standard agentic-coding benchmark — GPT-5.5 scores 82.6% versus ~77.9% for GPT-5.2, making GPT-5.5 the stronger pick for coding agents.