OpenAI

GPT-6.1 Sol API pricing.

GPT-6.1 Sol is OpenAI’s model on the API market, released 29 Sept 2026. Prices are per million tokens in USD, as last read from the price list.

$2.00Input / 1M
$10Output / 1M
1.1MContext
128KMax output
Capability scores
Epoch AI
Maths3 of 4 benchmarks98
Science and knowledge2 of 2 benchmarks84
CodingNot tested by Epoch
Reasoning and puzzles2 of 2 benchmarks72
Agents and long tasks3 of 3 benchmarks50

Each bar is this model's score in that area. The white tick marks the best score any model Epoch has tested reaches there.

Epoch Capabilities Index
168
Range 164 to 173 · #4 of 271 models Epoch has scored
Maths
98average of 3 of 4 Epoch results
FrontierMath (tiers 1 to 3) (max)94%
FrontierMath (tier 4) (max)100.0%
OTIS Mock AIME (max)100.0%
Science and knowledge
84average of 2 of 2 Epoch results
GPQA Diamond (max)95%
SimpleQA Verified (max)74%
Reasoning and puzzles
72average of 2 of 2 Epoch results
Chess puzzles (max)68%
Mystery game puzzles (max)80%
Agents and long tasks
50average of 3 of 3 Epoch results
Furniture assembly (max)80%
EBR-bench (game agent) (max)54%
SpireClimb (game agent) (max)25%

The index combines many benchmarks into one general-capability score; the range is how sure Epoch is of the number. Each area score is this site's average of the model's Epoch results in that area, where 0 is what guessing would score and 100 is perfect. Compare every model, and value for money →

Source: Epoch AI, Capabilities & benchmarking (licensed CC BY 4.0). Data refreshed 2 November 2026. These are Epoch's own tests; other benchmark sites can rank models differently.

Cheaper models that come close
Our working on Epoch's index
  1. GPT-6.1 Terra · OpenAIindex 168.11 · 50% cheaper

Models within 5 points of GPT-6.1 Sol on Epoch's Capabilities Index that cost less, comparing a typical chat mix (three parts input to one part output). A few points of index is a small difference and says nothing about your task: a place to start testing, not a verdict. Capability against price for every model.

Specification
USD per million tokens
Provider
OpenAI
Model id
openai/gpt-6.1-sol
Input
$2.00
Output
$10
Cached input
$0.10
Context window
1.1M tokens
Maximum output
128K tokens
Takes
file, image, text
Returns
text
Tool use
Yes
Reasoning
Yes
Released
29 Sept 2026
First tracked
29 Sept 2026

At $2.00 per million input tokens, GPT-6.1 Sol is dearer than 264 of the 340 models on the price list.

Price changes
Tracked since 17 Sept 2026

No price change has been recorded since tracking began on 17 Sept 2026. Prices are checked every six hours, and any change is listed here and on model changes.

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Coverage
6 stories
  1. OpenAI News ·
    GPT-6.1 Sol helps CodeRabbit strengthen security across complex codebases
  2. OpenAI News ·
    Asana cuts model costs 76x in browser tests with GPT-6.1 Sol
  3. LessWrong ·
    GPT-6.1 Sol nearly matches the no-CoT performance of GPT-6 Astra
  4. SiliconANGLE AI ·
    OpenAI’s GPT-6.1 Sol delivers Astra-like performance at a dramatically lower price
  5. AWS Machine Learning Blog ·
    Bring near-Astra intelligence to everyday work with GPT-6.1 Sol on Amazon Bedrock
  6. TechCrunch AI ·
    OpenAI launches GPT-6.1 Sol, says it nearly matches GPT-6 Astra and costs less
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Prices and specifications come from OpenRouter’s catalogue, last read 2 Nov 2026. A provider’s own price may differ; how this is collected.