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
$2
Output / 1M tokens
$10
Context Window
1.1M
Max Output
128K
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
Read More About GPT-6.1 Sol
GPT-6 Luna's tokens cost a twentieth of GPT-6.1 Sol's. On Artificial Analysis a finished task costs about half, and Sol on low effort scores five points higher than Luna on max.
October 2, 2026 · 6 min read
Gemini 4 Argon launches on GPT-6.1 Sol's rate card and is scheduled to move to Claude Opus 5.5's. On Artificial Analysis, Opus 5.5 at high effort already scores higher than Argon for less than Argon's introductory price.
October 1, 2026 · 7 min read
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