GPT-6 Sol
Last verified September 28, 2026 · OpenAI pricing ↗$2.00/1M input · $10.00/1M output · 1.1M context · OpenAI
GPT-6 Sol costs $2.00 per 1M input tokens and $10.00 per 1M output tokens from OpenAI, with a 1.1M-token context window. A typical chat reply (1,500 tokens in, 400 out) costs $0.0070, or $70.00 per 10,000 requests. On that workload it is cheaper than 43 of the 172 other buyable models tracked here.
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What GPT-6 Sol Costs Per Request
At $2.00 per 1M input and $10.00 per 1M output tokens, before caching or batch discounts.
| Workload | Input / output tokens | Per request | Per 10,000 requests |
|---|---|---|---|
| Chat reply | 1,500 / 400 | $0.0070 | $70.00 |
| RAG answer over retrieved docs | 8,000 / 600 | $0.022 | $220.00 |
| Coding-agent step | 30,000 / 2,000 | $0.080 | $800.00 |
GPT-6 Sol vs Similarly Priced Models
Nearest buyable models by price, with the RAG answer above (8,000 in / 600 out) priced on each.
| Model | Input /1M | Output /1M | Context | RAG answer |
|---|---|---|---|---|
| GPT-6 Sol OpenAI | $2.00 | $10.00 | 1.1M | $0.022 |
| GPT-6.1 Sol OpenAI | $2.00 | $10.00 | 1.1M | $0.022 |
| Claude Sonnet 5.5 Anthropic | $2.00 | $10.00 | 1.0M | $0.022 |
| Gemini 4 Argon Google | $2.00 | $10.00 | 1.0M | $0.022 |
Alternatives to GPT-6 Sol
Pricing Details
OpenAI12H CACHE (2026-10-20): Responses API prompt_cache_options.ttl "12h" bills cache writes at 2.5x input, $5.00 per 1M (the default "30m" stays 1.25x); reads unchanged. Launched September 22, 2026, alongside GPT-6 Luna and about 90 minutes after Claude Opus 5.5. Card: $2.00 input, $0.20 cached input, $2.50 cache write, $10.00 output. Exactly half of GPT-5.6 Sol's promotional $4.00/$20.00; OpenAI's community announcement calls it '50% lower API prices ... compared with GPT-5.6 promotional pricing' and nothing on the model or pricing page marks it as promotional. LONG CONTEXT: over 272,000 input tokens the whole request bills 2x input and cache, 1.5x output: $4.00 / $0.40 / $5.00 / $15.00. Batch and Flex 50%: $1.00 / $0.10 / $1.25 / $5.00 short, $2.00 / $0.20 / $2.50 / $7.50 long. Fast mode 2x: $4.00 / $0.40 / $5.00 / $20.00. Regional/data-residency endpoints +10%, FedRAMP +10%. Context 1,050,000 (922,000 max input + 128,000 max output). Reasoning effort none/low/medium (default)/high/xhigh/max. Knowledge cutoff April 20, 2026. SUPERSEDED 2026-09-29 by GPT-6.1 Sol (same card except cached input $0.10); not deprecated, model page points to 6.1, dropped from the pricing page flagship table. Same input, cache-read and output rates as Claude Sonnet 5 ($2/$0.20/$10) and as Claude Opus 5.5's Batch card ($2/$10). Artificial Analysis Intelligence Index v4.3.2 (read 2026-09-28): max 48 at $1.06 per task and $1,550 to run the index (31k output tokens per task); xhigh 44 / $0.53; high 43 / $0.37; medium 40 / $0.25; low 34 / $0.13; non-reasoning 28 / $0.33, which costs more than low. Model ID: gpt-6-sol.
Input / 1M tokens
$2
Output / 1M tokens
$10
Context Window
1.1M
Max Output
128K
Price History
No price change recorded since 2026-09-28, when this site started tracking this model; it launched on 2026-09-22.
Frequently Asked Questions
Common questions about GPT-6 Sol pricing and usage
How much does GPT-6 Sol cost?
GPT-6 Sol costs $2 per 1 million input tokens and $10 per 1 million output tokens. This pricing is set by OpenAI.
What tokenizer does GPT-6 Sol use?
GPT-6 Sol uses the o200k_base tokenizer. This is OpenAI's latest tokenizer, optimized for efficiency with a vocabulary of ~200,000 tokens.
What is GPT-6 Sol's context window?
GPT-6 Sol supports a context window of 1.1M tokens (1,050,000 tokens). The maximum output length is 128K tokens.
How does GPT-6 Sol compare to other models?
On an 8,000-token-in, 600-token-out RAG answer, GPT-6 Sol costs $0.022 per request. The nearest-priced alternatives cost: GPT-6.1 Sol (OpenAI) $0.022, Claude Sonnet 5.5 (Anthropic) $0.022, Gemini 4 Argon (Google) $0.022. The table above lists their full rates and context windows.
How do I count tokens for GPT-6 Sol?
Use the token counter at the top of this page or visit the homepage calculator. Paste your text and it will show the exact token count and cost for GPT-6 Sol using the o200k_base tokenizer.
Read More About GPT-6 Sol
GPT-6.1 Sol changed one number on GPT-6 Sol's rate card, cached input, from $0.20 to $0.10. The bigger cut is in the tokens: on medium it matches GPT-6 Sol's best score for a fifth of the cost per task.
September 30, 2026 · 7 min read
Claude Sonnet 5.5 kept Sonnet 5's $2 and $10. Of its five effort settings, one is ever the cheapest way to its score, and it is the one the API picks when you leave effort unset.
September 29, 2026 · 9 min read
Claude Opus 5.5 lists at exactly twice GPT-6 Sol. Run both flat out and Opus costs 5.6x as much; run Opus at its own default and it outscores Sol's best setting for 5% more money, and past 272K tokens it is the cheaper bill.
September 28, 2026 · 10 min read