GPT-5.2 Codex vs Trinity Nano Preview
GPT-5.2 Codex comes out ahead, 66 to 25 on our weighted score, and it is the cheaper option too.
- Our pick
OpenAIGPT-5.2 Codex
66/100- ECI—
- Price$1.75 / $14.00
- Context400K
Arcee AITrinity Nano Preview
25/100- ECI—
- Price—
- Context131K
Add a model
Make it a three-way comparison.
GPT-5.2 Codex is our pick
GPT-5.2 Codex is the better all-round choice, scoring 66/100 against Trinity Nano Preview (25). It leads on inputs & features and context window. The score weighs inputs & features 60%, context window 40%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
- CapabilityNot enough dataNo independent benchmark covers every model here yet
- Lowest priceGPT-5.2 CodexGPT-5.2 Codex $4.81 per 1M tokens (3:1 blend) · Trinity Nano Preview unpriced
- Longest contextGPT-5.2 CodexGPT-5.2 Codex 400,000 · Trinity Nano Preview 131,072 tokens
- Widest inputsGPT-5.2 CodexGPT-5.2 Codex: Text, Images, PDFs · Trinity Nano Preview: Text
- Self-hostingTrinity Nano PreviewPublishes downloadable weights (OpenMDW-1.1)
| Measure | Weight | GPT-5.2 Codex | Trinity Nano Preview |
|---|---|---|---|
| Inputs & features | 60% | 80 | 25 |
| Context window | 40% | 44 | 24 |
| Overall | 100% | 66/100 | 25/100 |
Left out because at least one model lacks the data: capability and price. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | GPT-5.2 CodexOpenAI | Trinity Nano PreviewArcee AI |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | — |
| ECI rank | — | — |
| Price per million tokens | ||
| Input | $1.75 | — |
| Output | $14.00 | — |
| Cached input | — | — |
| Blended (3:1) | $4.81 | — |
| Long-context rate | Same rate | — |
| Price source | Median of 11 providers | — |
| Limits | ||
| Context window | 400,000 tokens (best) | 131,072 tokens |
| Max output | 128,000 tokens | 131,072 tokens (best) |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | Yes | No |
| PDFs | Yes | No |
| Audio | No | No |
| Video | No | No |
| Reasoning | Yes | No |
| Tool calling | Yes | Yes |
| Structured output | Yes | No |
| Availability | ||
| Weights | Proprietary | OpenOpenMDW-1.1 |
| API model ID | — | — |
| API providers | 11 | — |
| Released | Dec 11, 2025 | Dec 1, 2025 |
| Knowledge cutoff | Aug 31, 2025 | — |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- GPT-5.2 Codex$45.50
- Trinity Nano Preview—
Which should you choose?
Which is better: GPT-5.2 Codex or Trinity Nano Preview?
GPT-5.2 Codex is the better all-round choice, scoring 66/100 against Trinity Nano Preview (25). It leads on inputs & features and context window. The score weighs inputs & features 60%, context window 40%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, GPT-5.2 Codex or Trinity Nano Preview?
GPT-5.2 Codex is cheaper at $1.75 input / $14.00 output per million tokens (median across 11 API providers). . At a typical mix of three input tokens to one output token, that is $4.81 per million tokens for GPT-5.2 Codex versus . Trinity Nano Preview has no published per-token price.
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. GPT-5.2 Codex has not been scored yet and Trinity Nano Preview has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for GPT-5.2 Codex and Trinity Nano Preview yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.
Which has the bigger context window?
GPT-5.2 Codex has the largest context window at 400,000 tokens, against 131,072 for Trinity Nano Preview. Maximum output per response: GPT-5.2 Codex up to 128,000, Trinity Nano Preview up to 131,072 tokens.
Which can read images, PDFs, audio or video?
GPT-5.2 Codex accepts text, images and PDFs; Trinity Nano Preview accepts text. GPT-5.2 Codex handles the widest range of inputs.
Are any of these open source?
Trinity Nano Preview publishes its weights (OpenMDW-1.1) and can be self-hosted; GPT-5.2 Codex is proprietary.
Which is newer?
GPT-5.2 Codex is the newest, released Dec 11, 2025. Trinity Nano Preview came out Dec 1, 2025. Knowledge cutoff: GPT-5.2 Codex Aug 31, 2025.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.
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