GPT-5.6 Sol
GPT-5.6 Sol is the flagship of OpenAI's GPT-5.6 series, its most capable model for long-horizon agentic work across coding, biology, and cybersecurity.
text + image + file → text · made by OpenAI
$4→$20per Mtok in / out
OpenAI · 15 sellers
Available within a subscription 2 plans
Bought by the month. What a plan allows is the half of its price that a rate card cannot carry, so it is printed beside every one.
- ChatGPT PlusOpenAIadvanced reasoning with GPT-5.6, expanded messages and uploads, expanded deep research, memory and context, projects, scheduled tasks and custom GPTs, and expanded Codex$20a month
- ChatGPT ProOpenAIfive or twenty times the usage of Plus, Pro reasoning, the maximum Codex tasks, unlimited and faster image creation, and maximum deep research$200a month
Sold by 38 ways
| Seller | Lane | Rate |
|---|---|---|
| Microsoft Azure AI cloud | flex | $2per Mtok in$10per Mtok outraw.githubusercontent.com · read 2026-10-31 |
| OpenAI api | batch | $2per Mtok in$10per Mtok out$0.2per Mtok cacheddevelopers.openai.com · read 2026-08-24 |
| Databricks cloud | standard | $4per Mtok in$20per Mtok out$0.4per Mtok cached$5per Mtok cache writemodels.dev · read 2026-10-31 |
| DigitalOcean cloud | standard | $4per Mtok in$20per Mtok out$0.4per Mtok cached$5per Mtok cache writemodels.dev · read 2026-10-31 |
| Microsoft Azure AI cloud | standard | $4per Mtok in$20per Mtok out$0.4per Mtok cached$5per Mtok cache writemodels.dev · read 2026-10-31 |
| OpenAI api | standard | $4per Mtok in$20per Mtok out$0.4per Mtok cacheddevelopers.openai.com · read 2026-08-24 |
| AWS Bedrock cloud | standard | $4.4per Mtok in$22per Mtok out$0.44per Mtok cached$5.5per Mtok cache writemodels.dev · read 2026-10-31 |
| Microsoft Azure AI cloud | long-context | $8per Mtok in$30per Mtok out$0.8per Mtok cachedprices.azure.com · read 2026-09-11 |
| Databricks cloud | priority | $8per Mtok in$40per Mtok out$0.8per Mtok cachedraw.githubusercontent.com · read 2026-10-31 |
| Microsoft Azure AI cloud | priority | $8.8per Mtok in$44per Mtok out$0.88per Mtok cachedraw.githubusercontent.com · read 2026-10-31 |
| Nous Research 2 ways | $4per Mtok in$20per Mtok out$0.4per Mtok cached$5per Mtok cache write | |
| Nous Research aggregator | batch | $2per Mtok in$10per Mtok out$0.2per Mtok cached$2.5per Mtok cache writeinference-api.nousresearch.com · read 2026-10-15 |
| Nous Research aggregator | standard | $4per Mtok in$20per Mtok out$0.4per Mtok cached$5per Mtok cache writeinference-api.nousresearch.com · read 2026-10-15 |
| OpenRouter 10 ways | $4per Mtok in$20per Mtok out$0.4per Mtok cached$5per Mtok cache write | |
| OpenRouter aggregator | batch | $2per Mtok in$10per Mtok out$0.2per Mtok cached$2.5per Mtok cache writeopenrouter.ai · read 2026-10-15 |
| OpenRouter aggregator | openai/flex | $2per Mtok in$10per Mtok out$0.2per Mtok cached$2.5per Mtok cache writeopenrouter.ai · read 2026-10-15 |
| OpenRouter aggregator | standard | $4per Mtok in$20per Mtok out$0.4per Mtok cached$5per Mtok cache writeopenrouter.ai · read 2026-10-15 |
| OpenRouter aggregator | amazon-bedrock/global | $4per Mtok in$20per Mtok out$0.4per Mtok cached$5per Mtok cache writeopenrouter.ai · read 2026-10-30 |
| OpenRouter aggregator | azure | $4per Mtok in$20per Mtok out$0.4per Mtok cached$5per Mtok cache writeopenrouter.ai · read 2026-09-23 |
| OpenRouter aggregator | openai | $4per Mtok in$20per Mtok out$0.4per Mtok cached$5per Mtok cache writeopenrouter.ai · read 2026-10-15 |
| OpenRouter aggregatornot on the seller's list today | openai/priority | $4per Mtok in$20per Mtok out$0.4per Mtok cached$5per Mtok cache writeopenrouter.ai · read 2026-08-25 |
| OpenRouter aggregator | amazon-bedrock/us-east-1 | $4.4per Mtok in$22per Mtok out$0.44per Mtok cached$5.5per Mtok cache writeopenrouter.ai · read 2026-08-29 |
| OpenRouter aggregator | azure/eu | $4.4per Mtok in$22per Mtok out$0.44per Mtok cached$5.5per Mtok cache writeopenrouter.ai · read 2026-09-23 |
| OpenRouter aggregator | azure/us | $4.4per Mtok in$22per Mtok out$0.44per Mtok cached$5.5per Mtok cache writeopenrouter.ai · read 2026-09-23 |
| OpenRouter aggregator | openai/fast | $8per Mtok in$40per Mtok out$0.8per Mtok cached$10per Mtok cache writeopenrouter.ai · read 2026-10-15 |
| Requesty 3 ways | $2.25per Mtok in$13.5per Mtok out$0.23per Mtok cached | |
| Requesty aggregatornot on the seller's list today | openai flex | $2.25per Mtok in$13.5per Mtok out$0.23per Mtok cachedrouter.requesty.ai · read 2026-08-25 |
| Requesty aggregatornot on the seller's list today | openai-responses flex | $2.25per Mtok in$13.5per Mtok out$0.23per Mtok cachedrouter.requesty.ai · read 2026-08-25 |
| Requesty aggregatornot on the seller's list today | bedrock us-east-2 | $3.96per Mtok in$19.8per Mtok out$0.4per Mtok cachedrouter.requesty.ai · read 2026-08-25 |
| Requesty aggregator | azure | $4per Mtok in$20per Mtok out$0.4per Mtok cachedrouter.requesty.ai · read 2026-10-08 |
| Requesty aggregator | openai | $4per Mtok in$20per Mtok out$0.4per Mtok cachedrouter.requesty.ai · read 2026-10-08 |
| Requesty aggregator | bedrock | $4.4per Mtok in$22per Mtok out$0.44per Mtok cachedrouter.requesty.ai · read 2026-08-28 |
| Requesty aggregatornot on the seller's list today | azure swedencentral | $4.95per Mtok in$29.7per Mtok out$0.49per Mtok cachedrouter.requesty.ai · read 2026-08-25 |
| Requesty aggregatornot on the seller's list today | openai-responses | $5per Mtok in$30per Mtok out$0.5per Mtok cachedrouter.requesty.ai · read 2026-09-11 |
| GitHub Copilot aggregator | standard | $4per Mtok in$20per Mtok out$0.4per Mtok cached$5per Mtok cache writemodels.dev · read 2026-10-31 |
| RedPill aggregator | standard | $4per Mtok in$20per Mtok out$0.4per Mtok cached$5per Mtok cache writeapi.redpill.ai · read 2026-10-27 |
| Venice AI aggregator | standard | $4per Mtok in$20per Mtok out$0.4per Mtok cached$5per Mtok cache writemodels.dev · read 2026-10-31 |
| Vercel AI Gateway aggregator | standard | $4per Mtok in$20per Mtok out$0.4per Mtok cached$5per Mtok cache writeai-gateway.vercel.sh · read 2026-09-20 |
| AtlasCloud aggregator | standard | $5per Mtok in$30per Mtok out$0.5per Mtok cachedapi.atlascloud.ai · read 2026-09-20 |
| ElectronHub aggregator | standard | $5per Mtok in$30per Mtok outapi.electronhub.ai · read 2026-10-31 |
| Inference.net aggregator | standard | $5per Mtok in$30per Mtok out$0.5per Mtok cachedapi.inference.net · read 2026-10-31 |
Measured 53 standings
| Place | Board | Metric | Score |
|---|---|---|---|
| 1stof 34 | LMArena · Search | Score (Elo) (xhigh) | 1257 |
| 2ndof 273 | ARC-AGI-1 (Public Eval) | Score (%) (max) | 99 |
| 2ndof 260 | Critpt — Epoch AI | Accuracy (max) | 32.286 |
| 2ndof 46 | Enigma eval — Epoch AI | Accuracy (high) | 37.12 |
| 2ndof 92 | Forecastbench — Epoch AI | Overall score (medium) | 66.5 |
| 2ndof 12 | Posttrainbench — Epoch AI | Average (%) (max) | 0.362 |
| 3rdof 163 | Artificial Analysis · Coding Index | Index | 78.3 |
| 3rdof 41 | Balrog — Epoch AI | Average progress (max) | 0.6 |
| 3rdof 29 | Surface evolver bench — Epoch AI | Mean score (xhigh) | 0.931 |
| 4thof 42 | Gso — Epoch AI | Score OPT@1 | 0.765 |
| 4thof 16 | Osworld 2 — Epoch AI | Binary accuracy (max) | 0.273 |
| 5thof 132 | Ale bench — Epoch AI | Performance (max) | 2176.88 |
| 5thof 290 | Arc agi 2 — Epoch AI | Score (max) | 92.5 |
| 5thof 56 | Gdp pdf — Epoch AI | GDP.pdf score | 0.307 |
| 5thof 17 | SWE-rebench Leaderboard (default window 15/05/2026–01/07/2026, 111 problems) | Resolved Rate (%) (medium) | 62.3 |
| 6thof 298 | ARC-AGI-2 (Semi-Private) | Score (%) (max) | 92.5 |
| 7thof 122 | Frontiermath tiers 1 3 v2 — Epoch AI | mean_score (max) | 89.123 |
| 7thof 23 | Gbaeval — Epoch AI | Overall score | 0.526 |
| 8thof 15 | Btf3 — Epoch AI | Pooled score (max) | 0.137 |
| 9thof 69 | Deepswe — Epoch AI | Pass@1 (max) | 0.727 |
| 9thof 28 | Ebr bench — Epoch AI | mean_score (max) | 44.762 |
| 9thof 21 | Frontierswe — Epoch AI | Score (max) | 32.202 |
| 9thof 142 | Mystery game puzzles — Epoch AI | mean_score (max) | 58 |
| 9thof 93 | Simpleqa verified — Epoch AI | mean_score (max) | 69.7 |
| 9thof 71 | Vending bench 2 — Epoch AI | Score | 9619.368 |
| 10thof 35 | Furniture assembly — Epoch AI | mean_score (max) | 56.667 |
| 10thof 173 | Weirdml — Epoch AI | Accuracy (high) | 88.76 |
| 11thof 306 | OTIS Mock AIME 2024-2025 | mean_score (max) | 100 |
| 12thof 309 | Arc agi — Epoch AI | Score (xhigh) | 97.5 |
| 12thof 154 | Chess puzzles — Epoch AI | mean_score (max) | 59 |
| 12thof 25 | Weirdml v3 — Epoch AI | Score (xhigh) | 14.992 |
| 13thof 35 | Blueprint bench 2 — Epoch AI | Score | 33.623 |
| 13thof 46 | Frontiercode — Epoch AI | Main score | 0.475 |
| 13thof 78 | Frontiermath tier 4 v2 — Epoch AI | mean_score (max) | 82.927 |
| 13thof 84 | Proofbench — Epoch AI | Accuracy (max) | 83 |
| 14thof 298 | ARC-AGI-1 (Semi-Private) | Score (%) (xhigh) | 97.5 |
| 14thof 14 | Frontiermath erdos — Epoch AI | mean_score (max) | 0 |
| 16thof 165 | LMArena · Vision | Score (Elo) (xhigh) | 1287 |
| 17thof 326 | GPQA Diamond | mean_score (max) | 93.497 |
| 18thof 131 | Artificial Analysis · Agentic Index | Index | 47.4 |
| 18thof 102 | Simplebench — Epoch AI | Score (AVG@5) | 0.648 |
| 19thof 282 | ARC-AGI-2 (Public Eval) | Score (%) (max) | 93.75 |
| 20thof 414 | LMArena · Text | Score (Elo) (xhigh) | 1485 |
| 20thof 135 | Webdev arena — Epoch AI | Arena Score (xhigh) | 1617.32 |
| 23rdof 53 | LMArena · Agent | Net Improvement (%) | 6.23 |
| 24thof 141 | LMArena · WebDev | Score (Elo) (xhigh) | 1618 |
| 26thof 30 | Mirrorcode — Epoch AI | mean_score (high) | 20 |
| 27thof 235 | Scicode — Epoch AI | Score (high) | 57.755 |
| 36thof 82 | Cursorbench — Epoch AI | Score (max) | 41.7 |
| 36thof 235 | Dtbench — Epoch AI | Accuracy (xhigh) | 95.73 |
| 37thof 197 | Lmca — Epoch AI | Score (xhigh) | 58.49 |
| 39thof 112 | ARC-AGI-3 (Semi-Private) | Score (%) (max) | 7.78 |
| 88thof 111 | Vectara Hallucination Leaderboard | Hallucination Rate | 12.4 |
About
GPT-5.6 Sol — a text model from OpenAI, sold by 15 companies from $4 in and $20 out per million tokens, placed 1st of 34 on LMArena · Search.
It takes text, images and files and returns text, with a context window of 272,000 tokens. It was published in July 2026, trained on material up to February 2026. Its sellers say it can reason step by step and call a tool. The catalogue files it under reasoning, code and agents. Fifteen companies sell it. The cheapest is $4 in and $20 out per million tokens at Databricks. Beside the standard rate there are faster, flex, separately routed, batch and regional lanes. It has been measured on 53 boards, and stands best at 1st of 34 on LMArena · Search.
Every current figure
- Maker
- OpenAI
- Register
- model
- Takes
- text + image + file
- Returns
- text
- Context
- 272,000 tokens
- Published
- July 2026
- Knowledge to
- February 2026
- Licence
- not read
- Sellers
- 15
- Price
- $4 in and $20 out per million tokens — Databricks
- Boards
- 53
- Best place
- 1st of 34 — LMArena · Search
Known as 26 names
GPT-5.6 Sol (high)GPT-5.6 Sol (low)GPT-5.6 Sol (max)GPT-5.6 Sol (medium)GPT-5.6 Sol (xhigh)gpt-5.6-sol_maxGPT 5.6 Sol (xHigh)gpt-5.6-sol-xhighgpt-5.6-sol-xhigh (codex-harness)GPT-5.6 Sol [medium]OpenAI GPT-5.6 Sol [medium]GPT-5.6-solopenai/gpt-5.6-sol5.6 solopenai/gpt-5.6-sol:batchazure/gpt-5.6-sol@eastus2azure/gpt-5.6-sol@swedencentralazure/openai-responses/gpt-5.6-sol@eastus2azure/openai-responses/gpt-5.6-sol@swedencentralbedrock/gpt-5.6-sol@us-east-1bedrock/gpt-5.6-sol@us-east-2openai-responses/gpt-5.6-solopenai-responses/gpt-5.6-sol:flexopenai/gpt-5.6-sol:flexopenai/gpt-5.6-sol-batchOpenAI: GPT-5.6 Sol (batch)