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#21

GPT-5.6 Sol

OpenAI Release: 2026-07-09 Tested on: 2026-10-01 01:52 openai/gpt-5.6-sol::high
~2T total (~150B active)MoEClosedEstimated
(high) (medium) (low) (none)

Summary

GPT-5.6 Sol scores 9.5 on AI BENCHY and ranks #21. It has 10.0 reliability, a 89.9% pass rate, $1.595 total cost, and 13.59s average response time.

Model facts

Researched on 2026-08-12

Estimated
Parameters
~2T total (~150B active)
Architecture
MoE
Availability
Closed
License
-

Best estimate from public evidence; the vendor did not disclose every value. Vendor does not disclose the architecture or count.

Parameter source Availability source

Score

9.5

Consistency

8.9

Reliability

10.0

Total Cost (Current Price)

$1.595 ↑ +4.6%

Tested at: $1.524

Total Output Tokens

32,071

Total Input Tokens

195,567

Input Price

$2.000 / 1M

Output Price

$10.000 / 1M

Cache Read Price

$0.200 / 1M

Cache Write Price

$2.500 / 1M

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Tests Correct

Wrong Tests: 4

Attempt pass rate: 89.9%

Flaky tests

3

Flaky tests had mixed outcomes across runs (at least one pass and one fail).

Response Time (avg)

13.59s

Response Time (max): 59.99s

Response Time (total): 312.61s

Wrong answer: 4

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#21 GPT-5.6 Sol

high
Cost
$0.151
Time
201.9s
Tokens
5,100 tok

Run history

Tested on Score Reliability Tests Correct Total Cost Compare
2026-10-01 01:52 Re-test 9.5 10.0 $1.595 ↑ Current run
2026-07-16 22:39 New test added 9.4 10.0 $1.234 Compare
2026-07-09 21:32 Initial run 9.4 10.0 $0.821 Compare

This run used a different benchmark suite. Keep suite changes in mind when reading historical movement.

Price History

Historical pricing data for this model from OpenRouter.

Date Input Price Output Price Cache Read Price Cache Write Price
2026-08-14 12:51 $5.000 / 1M $30.000 / 1M N/A N/A
2026-10-01 18:33 $2.000 / 1M $10.000 / 1M $0.200 / 1M $2.500 / 1M

Charts

Choose the first model, then click a second model to open a side-by-side page.

Total Output Tokens

Score vs Total Output Tokens

Quick Compare

GPT-5.6 SolhighvsGPT-6 AstramediumGPT-5.6 SolhighvsGPT-5.5lowGPT-5.6 SolhighvsGPT-5.6 SolmediumGPT-5.6 SolhighvsClaude Opus 5.5lowGPT-5.6 SolhighvsGPT-6 SolmediumGPT-5.6 SolhighvsClaude Opus 5.5highGPT-5.6 SolhighvsGemini 3.7 FlashmediumGPT-5.6 SolhighvsGemini 3.7 FlashlowGPT-5.6 SolhighvsGPT-6.1 SollowGPT-5.6 SolhighvsClaude Opus 5high

Category Breakdown

Category Score Consistency Tests Correct
Agentic 10.0 10.0
Anti-AI Tricks 8.7 7.9
Coding 10.0 10.0
Combined 10.0 10.0
Data parsing and extraction 10.0 10.0
Domain specific 5.3 7.2
General Intelligence 10.0 10.0
Instructions following 10.0 10.0
Puzzle Solving 10.0 10.0
Tool Calling 10.0 10.0
Trivia 4.7 1.6

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