Model comparison - Same provider, successor
GPT-6.1 Sol vs GPT-6 Sol
GPT-6.1 Sol and GPT-6 Sol are both OpenAI models. Both list the same first-party API price: $2 per 1M input tokens and $10 per 1M output tokens. GPT-6.1 Sol and GPT-6 Sol both have a 1,050,000-token context window, and both return up to 128,000 output tokens per response. GPT-6.1 Sol was released on September 29, 2026 and GPT-6 Sol on September 22, 2026. Both are closed-weights models, available only through an API.
Last verified from each provider's pricing page. All sources
Side-by-side specs
| Spec | GPT-6.1 Sol | GPT-6 Sol |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input / 1M tokens | $2 | $2 |
| Output / 1M tokens | $10 | $10 |
| Cache read / 1M | $0.10 | $0.20 |
| Cache write / 1M | $2.50 | $2.50 |
| Batch input / 1M | $1 | $1 |
| Batch output / 1M | $5 | $5 |
| Long-context rates above | 272,000 tokens | 272,000 tokens |
| Context window | 1,050,000 | 1,050,000 |
| Max output | 128,000 | 128,000 |
| Release date | ||
| Weights | Closed | Closed |
| API model id | gpt-6.1-sol | gpt-6-sol |
| AI Gateway id | openai/gpt-6.1-sol | openai/gpt-6-sol |
| Last verified |
Prices in USD per 1M tokens at each provider's standard first-party rate. A dash means the provider does not bill that item separately or no primary page states it.
What each costs in practice
The same three workloads every model page uses, worked from each model's standard list rates. Swap in your own token counts with the math on each model's page.
| Workload | GPT-6.1 Sol | GPT-6 Sol |
|---|---|---|
| One agent session1M input tokens and 100K output tokens, no caching. | $3.00 | $3.00 |
| A chat app10,000 requests a day at 2K input and 500 output tokens each. | $90.00$2,700.00 per 30-day month | $90.00$2,700.00 per 30-day month |
| The same session at a 90% cache hit90% of the input is read from the prompt cache. The one-time cache write premium is not included. | $1.29 | $1.38 |
Show the math
GPT-6.1 Sol
- One agent sessionInput: 1M x $2 = $2.00Output: 0.1M x $10 = $1.00
- A chat appInput: 20M x $2 = $40.00Output: 5M x $10 = $50.00
- The same session at a 90% cache hitCached input: 0.9M x $0.10 = $0.09Uncached input: 0.1M x $2 = $0.20Output: 0.1M x $10 = $1.00
GPT-6 Sol
- One agent sessionInput: 1M x $2 = $2.00Output: 0.1M x $10 = $1.00
- A chat appInput: 20M x $2 = $40.00Output: 5M x $10 = $50.00
- The same session at a 90% cache hitCached input: 0.9M x $0.20 = $0.18Uncached input: 0.1M x $2 = $0.20Output: 0.1M x $10 = $1.00
Benchmarks under the same setting
Only boards that list both models under the same run setting appear here, one row per board and setting, with each score exactly as the board shows it. Scores on different boards use different scales and are never combined.
| Board and setting | GPT-6.1 Sol | GPT-6 Sol |
|---|---|---|
| ARC-AGI-2reasoning level: MaxOfficial leaderboard - arcprize.org | 94.2% | 89.6% |
| LMArena WebDev (Code Arena WebDev Overall)Code Arena WebDev Overall, default leaderboard view (891,922 votes, 145 models)Official leaderboard - arena.ai | 1755+13/-13 | 1683+11/-11 |
| Terminal-Bench 4.0agent: Codex; effort: maxOfficial leaderboard - tbench.ai | 58.2% ± 3.1% | 49.4% ± 3.2% |
Set them up in your tools
Step-by-step guides whose official docs list GPT-6.1 Sol or GPT-6 Sol by model id.
- Use OpenAI in AiderLists GPT-6.1 Sol
- Use OpenAI in ClineLists GPT-6.1 Sol
- Use OpenAI in Codex CLILists GPT-6.1 Sol and GPT-6 Sol
- Use OpenAI in ContinueLists GPT-6.1 Sol
- Use OpenAI in GooseLists GPT-6.1 Sol
- Use OpenAI in OpenCodeLists GPT-6.1 Sol
- Use OpenAI in Roo CodeLists GPT-6.1 Sol
- Use OpenAI in ZedLists GPT-6.1 Sol
Model pages
FAQ
How do GPT-6.1 Sol and GPT-6 Sol compare on price?
Both list the same first-party API price: $2 per 1M input tokens and $10 per 1M output tokens. For one agent session of 1M input and 100K output tokens with no caching, that is $3.00 on GPT-6.1 Sol and $3.00 on GPT-6 Sol. Prices are each provider's first-party list rates, verified October 17, 2026 and October 17, 2026.
What are the context windows of GPT-6.1 Sol and GPT-6 Sol?
GPT-6.1 Sol and GPT-6 Sol both have a 1,050,000-token context window, and both return up to 128,000 output tokens per response.
Are GPT-6.1 Sol and GPT-6 Sol open weights?
GPT-6.1 Sol is closed-weights and is called through OpenAI's API as gpt-6.1-sol. GPT-6 Sol is closed-weights and is called through OpenAI's API as gpt-6-sol.
More comparisons
- Gemini 4 Argon vs GPT-6.1 SolSimilar price, same tier
- Claude Sonnet 5.5 vs GPT-6.1 SolSimilar price, same tier
- GPT-5.6 Sol vs GPT-6 SolSame provider, successor
- Claude Opus 5.5 vs GPT-6.1 SolSimilar price, same tier
- GPT-6.1 Sol vs Grok 4.7Similar price, same tier
- GLM-5.3 vs GPT-6.1 SolOpen weights vs closed
- GPT-6.1 Sol vs Qwen3.8-2.4T-A95BSimilar price, same tier
- GPT-6.1 Sol vs Qwen3.8-MaxSimilar price, same tier
Sources
GPT-6.1 Sol verified from developers.openai.com; GPT-6 Sol verified from developers.openai.com. This page is as current as the older of the two: .
Newsletter
Get model price changes as they ship
One email per week. New model releases, price cuts and what they mean for your bill.