token.app › Compare › GPT-5 Pro vs Inkling Small
GPT-5 Pro vs Inkling Small
GPT-5 Pro leads on 2 of 2 shared benchmarks. Inkling Small is 65× cheaper per token on a blended 3:1 basis. Inkling Small accepts the larger context window (524K).
Head to head
Blended price uses a 3:1 input:output mix
| GPT-5 Pro | Inkling Small | |
|---|---|---|
| Provider | OpenAI | Thinkingmachines |
| Input $/1M | $15.00 | $0.450 |
| Output $/1M | $120.00 | $1.20 |
| Blended $/1M | $41.25 | $0.637 |
| Context window | 400K | 524K |
| Max output | 128K | 262K |
| Released | Oct 2025 | Jul 2026 |
| Licence | Proprietary | Open weights |
| FrontierMath T1–3 | 55.8% | 46.3% |
| FrontierMath T4 | 19.5% | 17.1% |
Benchmark scores independently run and published by Epoch AI, 'AI Benchmarking Hub', used under CC BY 4.0. Only benchmarks with a score for BOTH models are compared.
Choose GPT-5 Pro if…
- Higher FrontierMath T1–3 (55.8% vs 46.3%)
- Higher FrontierMath T4 (19.5% vs 17.1%)
Choose Inkling Small if…
- Costs less per token — $0.637 vs $41.25 blended
- Larger context window (524K)
- Open weights — self-hostable
- Newer model (released Jul 2026)
FAQ
Which is better, GPT-5 Pro or Inkling Small?
Across the 2 benchmarks both models have independently-run scores for, GPT-5 Pro leads on 2 and Inkling Small leads on 0. Benchmarks are one input — price and context window are on this page too.
Is GPT-5 Pro cheaper than Inkling Small?
Inkling Small is cheaper: $0.637 versus $41.25 per million tokens blended at 3:1 input:output. Input alone: $15.00 vs $0.450. Output alone: $120.00 vs $1.20.
What context windows do GPT-5 Pro and Inkling Small have?
GPT-5 Pro: 400,000 tokens. Inkling Small: 524,288 tokens.
Who makes GPT-5 Pro and Inkling Small?
GPT-5 Pro is made by OpenAI. Inkling Small is made by Thinkingmachines.