How much does GPT-6.1 Sol cost?

GPT-6.1 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-6.1 Sol use?

GPT-6.1 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-6.1 Sol's context window?

GPT-6.1 Sol supports a context window of 1.1M tokens (1,050,000 tokens). The maximum output length is 128K tokens.

How does GPT-6.1 Sol compare to other models?

You can compare GPT-6.1 Sol's pricing and capabilities against other LLMs in the comparison table above, or visit the full pricing page for a side-by-side view of all models.

How do I count tokens for GPT-6.1 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-6.1 Sol using the o200k_base tokenizer.

GPT-6.1 Sol

Last verified September 30, 2026 · OpenAI pricing ↗

$2.00/1M input · $10.00/1M output · 1.1M context · OpenAI

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Pricing Details

OpenAILaunched September 29, 2026 at DevDay, one week after GPT-6 Sol. Card: $2.00 input, $0.10 cached input, $2.50 cache write, $10.00 output. The ONLY change from GPT-6 Sol is cached input, $0.20 to $0.10 (cache discount 90% to 95% off); every other multiplier is unchanged so the halving carries through all tiers. Batch and Flex 50%: $1.00 / $0.05 / $1.25 / $5.00. Fast 2x: $4.00 / $0.20 / $5.00 / $20.00. LONG CONTEXT: over 272,000 input tokens the whole request bills $4.00 / $0.20 / $5.00 / $15.00 (Batch/Flex $2.00 / $0.10 / $2.50 / $7.50, Fast $8.00 / $0.40 / $10.00 / $30.00). Ultrafast not yet offered for Sol ('coming' per DevDay press coverage, no OpenAI page yet); Astra Ultrafast is 6x Standard. Regional processing and FedRAMP +10%; Fast unavailable with EU residency. Context 1,050,000 (922,000 max input + 128,000 max output). Knowledge cutoff April 30, 2026. Reasoning effort low / medium (default) / high / xhigh / max; 'none' and 'minimal' are NOT supported, unlike GPT-6 Sol and Luna, so migrations setting none must switch to low. Tool calling Responses API only. Same input, cache write and output as Claude Sonnet 5.5 ($2 / $2.50 / $10); cache read is half Sonnet 5.5's $0.20, but Sonnet 5.5 has no long-context surcharge. Artificial Analysis Intelligence Index v4.3.2 (read 2026-09-30): max 52 at $0.72 per task (67M output tokens across the index), medium 48 at $0.21 per task (15M); GPT-6 Sol max 48 at $1.05 (77M), Astra max 53 at $3.26, Sonnet 5.5 max 56 at $7.60, Opus 5.5 max 58 at $5.98. Vals Index (max): 61.15% at $3.237 per test, rank 7 of 30 (GPT-6 Sol 57.54% at $7.581). OpenAI-reported via press (launch post not directly readable): DeepSWE v1.1 about level with Astra at about 1/5 the cost per task; OSWorld 2.0 within 2.1 points of Astra at about 1/7; AutomationBench 2.2 points above Opus 5.5 at about 1/3 the cost (Vellum: 35.4 at medium; Sonnet 5.5 scores 44.7); Terminal-Bench Science 0.1 at max $5.47 per task vs Opus 5.5 $23.21 and Astra $23.80. AVAILABILITY: ChatGPT Work and Codex (Codex default model); Azure Foundry GA 2026-09-29 at list in Global, +10% US Data Zone, +20% EU and APAC ($2.40 / $0.12 / $3.00 / $12.00); Amazon Bedrock GA 2026-09-29, AWS prints no rate, LiteLLM carries Global at list and US in-region at 1.1x. Model ID: gpt-6.1-sol.

Input / 1M tokens

Output / 1M tokens

$10

Context Window

1.1M

Max Output

128K

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Price History

Launched at current price on 2026-09-29. No price changes recorded since.

Frequently Asked Questions

Common questions about GPT-6.1 Sol pricing and usage