GPT-5.5 Pro
GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads.
text + image + file → text · made by OpenAI
Sold by 12 ways
| Seller | Lane | Rate |
|---|---|---|
| OpenAI api | batch | $15per Mtok in$90per Mtok outdevelopers.openai.com · read 2026-08-24 |
| Databricks cloud | standard | $30per Mtok in$180per Mtok out$30per Mtok cached$30per Mtok cache writeraw.githubusercontent.com · read 2026-09-16 |
| Microsoft Azure AI cloud | standard | $30per Mtok in$180per Mtok out$3per Mtok cachedraw.githubusercontent.com · read 2026-09-16 |
| OpenAI api | standard | $30per Mtok in$180per Mtok outdevelopers.openai.com · read 2026-08-24 |
| Nous Research 2 ways | $30per Mtok in$180per Mtok out | |
| Nous Research aggregator | batch | $15per Mtok in$90per Mtok outinference-api.nousresearch.com · read 2026-09-12 |
| Nous Research aggregator | standard | $30per Mtok in$180per Mtok outinference-api.nousresearch.com · read 2026-09-12 |
| OpenRouter 3 ways | $30per Mtok in$180per Mtok out | |
| OpenRouter aggregator | batch | $15per Mtok in$90per Mtok outopenrouter.ai · read 2026-08-24 |
| OpenRouter aggregator | openai/flex | $15per Mtok in$90per Mtok outopenrouter.ai · read 2026-08-25 |
| OpenRouter aggregator | standard | $30per Mtok in$180per Mtok outopenrouter.ai · read 2026-08-24 |
| Requesty aggregator | openai-responses | $30per Mtok in$180per Mtok outrouter.requesty.ai · read 2026-08-28 |
| Vercel AI Gateway aggregator | standard | $30per Mtok in$180per Mtok outai-gateway.vercel.sh · read 2026-08-25 |
| Venice AI aggregator | standard | $37.5per Mtok in$225per Mtok outmodels.dev · read 2026-09-16 |
Measured 18 standings
| Place | Board | Metric | Score |
|---|---|---|---|
| 1stof 101 | FrontierMath (Tiers 1-3) | mean_score (high) | 52.4 |
| 2ndof 72 | Frontiermath tier 4 — Epoch AI | mean_score (xhigh) | 39.6 |
| 3rdof 222 | Chess puzzles — Epoch AI | mean_score (xhigh) | 64 |
| 4thof 106 | Frontiermath tiers 1 3 v2 — Epoch AI | mean_score (xhigh) | 87.719 |
| 4thof 102 | Simplebench — Epoch AI | Score (AVG@5) | 0.769 |
| 5thof 177 | Critpt — Epoch AI | Accuracy (xhigh) | 30.571 |
| 6thof 290 | OTIS Mock AIME 2024-2025 | mean_score (xhigh) | 100 |
| 8thof 161 | Dtbench — Epoch AI | Accuracy (xhigh) | 96 |
| 8thof 123 | Lmca — Epoch AI | Score (xhigh) | 53.94 |
| 10thof 313 | GPQA Diamond | mean_score (xhigh) | 93.921 |
| 11thof 62 | Frontiermath tier 4 v2 — Epoch AI | mean_score (xhigh) | 78.049 |
| 13thof 205 | ARC-AGI-1 (Public Eval) | Score (%) (high) | 98 |
| 15thof 230 | ARC-AGI-1 (Semi-Private) | Score (%) (high) | 96.5 |
| 15thof 244 | Arc agi — Epoch AI | Score (high) | 96.5 |
| 20thof 216 | ARC-AGI-2 (Public Eval) | Score (%) (xhigh) | 90.42 |
| 21stof 232 | ARC-AGI-2 (Semi-Private) | Score (%) (high) | 84.58 |
| 24thof 227 | Arc agi 2 — Epoch AI | Score (high) | 84.58 |
| 33rdof 656 | Epoch capabilities index — Epoch AI | ECI Score (xhigh) | 162.03 |
About
GPT-5.5 Pro — a text model from OpenAI, sold by 8 companies from $30 in and $180 out per million tokens, placed 1st of 101 on FrontierMath (Tiers 1-3).
It takes text, images and files and returns text, with a context window of 1,000,000 tokens. It was published in April 2026, trained on material up to December 2025. Its sellers say it can reason step by step and call a tool. The catalogue files it under reasoning. Eight companies sell it. The cheapest is $30 in and $180 out per million tokens at Databricks. Beside the standard rate there are batch, flex and separately routed lanes. It has been measured on 18 boards, and stands best at 1st of 101 on FrontierMath (Tiers 1-3).
Every current figure
- Maker
- OpenAI
- Register
- model
- Takes
- text + image + file
- Returns
- text
- Context
- 1,000,000 tokens
- Longest answer
- 128,000 tokens
- Published
- April 2026
- Knowledge to
- December 2025
- Licence
- not read
- Sellers
- 8
- Price
- $30 in and $180 out per million tokens — Databricks
- Boards
- 18
- Best place
- 1st of 101 — FrontierMath (Tiers 1-3)
Known as 9 names
GPT-5.5 Pro (High)GPT-5.5 Pro (XHigh)gpt-5.5-pro-pre-release_highgpt-5.5-pro-pre-release_xhighopenai/gpt-5.5-proopenai/gpt-5.5-pro:batchgpt-5.5-proopenai-responses/gpt-5.5-proOpenAI: GPT-5.5 Pro (batch)