GPT Audio vs Nex-N2.5-Pro
Nex-N2.5-Pro costs 40.0x less per output token than GPT Audio ($0.25 vs $10.00 per million). Updated October 22, 2026; no benchmark has tested both models yet.
- Coding
- No data
- Overall
- No data
- Output $/M
- $10.00
- Coding
- No data
- Overall
- No data
- Output $/M
- $0.25
GPT Audio or Nex-N2.5-Pro: which to pick
Neither model has a coding score yet, so the two cannot be ranked on coding.
Compare them on price, context and the boards below.
No benchmark has tested either model yet, so price and context are the only way to compare them.
Which one for your work
Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.
Coding
Vibe Coding Index, six public coding benchmarks
No call
Neither has a coding score yet.
One side not measured
Long documents
Listed context window
Nex-N2.5-Pro
Nex-N2.5-Pro takes 262K tokens against 128K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Nex-N2.5-Pro
GPT Audio $0.0075, Nex-N2.5-Pro $0.0002 per turn.
List prices
At a glance
- Coding index
- GPT Audio not benchmarked, Nex-N2.5-Pro not benchmarked.
- Widest category
- None yet: no category has been tested on both models.
- Widest single gap
- None yet: no benchmark has tested both models.
- Output price
- GPT Audio $10.00 against Nex-N2.5-Pro $0.25 per million output tokens, 40.0x apart.
- Context window
- GPT Audio takes 128K tokens, Nex-N2.5-Pro 262K.
Benchmark by benchmark
Every board either model has a result on, a category to a fold; bars are each result on a 0 to 100 scale. Only one model is measured on each, so no row names a leader.
What each workload costs
Three fixed token mixes at each model's listed price, so per-token rates become a bill.
Chat turn
1K input + 500 output tokens
Nex-N2.5-Pro costs less
Repository review
50K input + 3K output tokens
Nex-N2.5-Pro costs less
Agent loop
200K input + 10K output tokens
Nex-N2.5-Pro costs less
Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.
Specification differences
The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.
| Specification | OpenAI GPT Audio | Nex AGI Nex-N2.5-Pro |
|---|---|---|
| Maker | OpenAI | Nex AGI |
| Weights | No public weights listed | Open weights |
| Released | January 19, 2026 | September 8, 2026 |
| Context window | 128K | 262K |
| Input $/Mtok | $2.50 | $0.075 |
| Output $/Mtok | $10.00 | $0.25 |
| Coding index | Not benchmarked | Not benchmarked |
| Independent measurements behind it | 0 | 0 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is GPT Audio better than Nex-N2.5-Pro for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Compare them on price, context and the boards below.
Which is cheaper, GPT Audio or Nex-N2.5-Pro?
GPT Audio costs $2.50 per million input tokens and $10.00 per million output tokens; Nex-N2.5-Pro costs $0.075 and $0.25. Cost per solved task is known for neither of them.
Which has the bigger context window, GPT Audio or Nex-N2.5-Pro?
Nex-N2.5-Pro, with 262K tokens against 128K.
Has any benchmark tested both GPT Audio and Nex-N2.5-Pro?
No benchmark has tested either model yet, so price and context are the only way to compare them. Data as of October 22, 2026.