Every change to the data behind these charts, newest first: models joining UL’s Gauntlet or moving to a newer version, then every change Artificial Analysis made to its scores and prices. Click a model to see its past scores.
Claude Sonnet 5.5 added a low reasoning-effort setting scoring 35.9 on Intelligence at $0.42 per task. Its medium and high Intelligence scores each rose by 0.1 points, to 40.8 and 46.8. Costs increased slightly at medium ($0.5862 to $0.5894), high ($1.08 to $1.123), xhigh ($2.743 to $2.746), and max ($7.621 to $7.667).
AI-written summary of these changes · gpt-5.6-terra
Score changes 2
mediumIntelligence40.7 → 40.8+0.1
Claude Sonnet 5.5highIntelligence46.7 → 46.8+0.1
Price changes 4
mediumCost per task$0.59 → $0.59+$0.0032
Claude Sonnet 5.5highCost per task$1.08 → $1.12+$0.043
Claude Sonnet 5.5xhighCost per task$2.74 → $2.75+$0.0036
Claude Sonnet 5.5maxCost per task$7.62 → $7.67+$0.046
New effort levels 1
lowIntelligence35.9$0.42 per task
1 new effort level
Grok 4.7 added a low reasoning-effort result of 42.2 on the Intelligence Index, with a cost of $1.25 per task.
AI-written summary of these changes · gpt-5.6-terra
New effort levels 1
lowIntelligence42.2$1.25 per task
9 score changes · 8 price changes
GPT-6 Luna’s Intelligence score rose at every effort level, from 20.9 to 21.5 at low through 37.3 to 38.1 at max. GPT-6 Sol’s scores moved from 33.9 to 34.2 at low, 44.1 to 44.2 at xhigh and 47.5 to 47.6 at max, while high fell from 42.8 to 42.4. Both models had small mixed cost movements: Luna’s xhigh cost rose from $0.0421 to $0.0422, while Sol’s low cost rose from $0.1326 to $0.1328 and its other listed costs fell.
AI-written summary of these changes · gpt-5.6-terra
Score changes 9
lowIntelligence20.9 → 21.5+0.6
GPT-6 LunamediumIntelligence29.5 → 29.9+0.4
GPT-6 LunahighIntelligence32.1 → 32.9+0.8
GPT-6 LunaxhighIntelligence33.9 → 34.6+0.7
GPT-6 LunamaxIntelligence37.3 → 38.1+0.8
lowIntelligence33.9 → 34.2+0.3
GPT-6 SolhighIntelligence42.8 → 42.4−0.4
GPT-6 SolxhighIntelligence44.1 → 44.2+0.1
GPT-6 SolmaxIntelligence47.5 → 47.6+0.1
Price changes 8
lowCost per task$0.13 → $0.13+$0.0002
GPT-6 SolhighCost per task$0.38 → $0.37−$0.0025
GPT-6 SolxhighCost per task$0.52 → $0.52−$0.0028
GPT-6 SolmaxCost per task$1.05 → $1.04−$0.0047
mediumCost per task$0.018 → $0.018−$0.0001
GPT-6 LunahighCost per task$0.029 → $0.029−$0.0001
GPT-6 LunaxhighCost per task$0.042 → $0.042+$0.0001
GPT-6 LunamaxCost per task$0.068 → $0.068−$0.0002
1 new release
Upstage’s new Solar Mini 4 release scores 24.1 on the Intelligence Index. Its single listed setting costs $0.36 per Intelligence Index task.
AI-written summary of these changes · gpt-5.6-terra
New releases 1
peak 24.1one setting, $0.36 per task
1 price change
NVIDIA's Nemotron 3.5 Lightning default cost per Intelligence Index task fell from $0.1004 to $0.0931, a decrease of $0.0073 (about 7%).
AI-written summary of these changes · gpt-5.6-terra
Price changes 1
single settingCost per task$0.10 → $0.093−$0.0073
1 new release
Google’s new Gemini 4 Argon release scores 52.6 on the Intelligence Index in its listed setting. Its cost is $1.99 per Intelligence Index task.
AI-written summary of these changes · gpt-5.6-terra
New releases 1
peak 52.6one setting, $1.99 per task
1 price change
Claude Sonnet 5.5 at max reasoning effort rose in cost from $7.603 to $7.621 per Intelligence Index task. This was an increase of $0.018, with no score, release, or other effort-level changes listed.
AI-written summary of these changes · gpt-5.6-terra
Price changes 1
maxCost per task$7.60 → $7.62+$0.018
1 new release · 2 new effort levels
Kimi K3 added a low-effort setting scoring 30.1 on Intelligence at $1.15 per task. Inkling Small debuted at 25.7 for $0.089 per task, while DeepSeek V4 Flash 0420's new high-effort setting scored 24.4 at $0.13. The two lower-scoring entries are also far cheaper per task than Kimi K3's low-effort setting.
AI-written summary of these changes · gpt-5.6-terra
New releases 1
peak 25.7one setting, $0.089 per task
New effort levels 2
lowIntelligence30.1$1.15 per task
highIntelligence24.4$0.13 per task
1 removed effort level
Claude Sonnet 5.5’s low reasoning-effort option was removed from the Intelligence Index. It had scored 35.8 and cost $0.41 per task.
AI-written summary of these changes · gpt-5.6-terra
Removed effort levels 1
lowIntelligencewas 35.8was $0.41 per task
1 new release
OpenAI's new GPT-6.1 Sol entered the Intelligence Index at 51.8. It has five effort levels, with Intelligence Index task costs ranging from $0.13 to $0.72.
AI-written summary of these changes · gpt-5.6-terra
New releases 1
peak 51.85 effort levels, $0.13–$0.72 per task
1 price change
DeepSeek V3 0324’s cost per Intelligence Index task fell from $0.1053 to $0.0202, a reduction of $0.0851.
AI-written summary of these changes · gpt-5.6-terra
Price changes 1
single settingCost per task$0.11 → $0.020−$0.085
7 price changes
GPT-6 Luna’s cost per Intelligence task rose at medium, high, and xhigh effort, from $0.0173 to $0.0176, $0.0286 to $0.0291, and $0.0417 to $0.0421, while max fell slightly from $0.0681 to $0.0679. GPT-6 Sol’s xhigh and max costs fell from $0.5319 to $0.5236 and $1.056 to $1.049, while high increased from $0.3746 to $0.3753.
AI-written summary of these changes · gpt-5.6-terra
Price changes 7
mediumCost per task$0.017 → $0.018+$0.0003
GPT-6 LunahighCost per task$0.029 → $0.029+$0.0005
GPT-6 LunaxhighCost per task$0.042 → $0.042+$0.0004
GPT-6 LunamaxCost per task$0.068 → $0.068−$0.0002
highCost per task$0.37 → $0.38+$0.0007
GPT-6 SolxhighCost per task$0.53 → $0.52−$0.0083
GPT-6 SolmaxCost per task$1.06 → $1.05−$0.0070
2 price changes
GPT-6 Sol’s medium-effort Intelligence task cost edged down from $0.2482 to $0.2472. Its low-effort cost moved slightly up from $0.1322 to $0.1326, leaving the two effort levels moving in opposite directions.
AI-written summary of these changes · gpt-5.6-terra
Price changes 2
lowCost per task$0.13 → $0.13+$0.0004
GPT-6 SolmediumCost per task$0.25 → $0.25−$0.0010
1 new release
Alibaba’s new Qwen3.5 9B release scores 11.2 on the Intelligence Index in its listed setting. Its cost is $0.21 per Intelligence Index task.
AI-written summary of these changes · gpt-5.6-terra
New releases 1
peak 11.2one setting, $0.21 per task
1 price change
Tencent's Hy3 default cost per Intelligence Index task fell from $0.0743 to $0.0718, a decrease of $0.0025.
AI-written summary of these changes · gpt-5.6-terra
Price changes 1
single settingCost per task$0.074 → $0.072−$0.0025
1 new release
Anthropic's new Claude Sonnet 5.5 release scores 56 on the Intelligence Index. It has five reasoning-effort levels, with Intelligence Index task costs ranging from $0.41 to $7.60.
AI-written summary of these changes · gpt-5.6-terra
New releases 1
peak 56.05 effort levels, $0.41–$7.60 per task
1 new release
Xiaomi’s MiMo-V2.6-Flash was added with an Intelligence Index score of 37.9. Its single listed setting costs $0.062 per Intelligence Index task.
AI-written summary of these changes · gpt-5.6-terra
Inkling (25) and MiniMax-M2.7 (22.8) were removed, while Trinity Large Thinking entered at 10.8 intelligence and $0.12 per task. Costs rose for Mercury 2.5 ($0.0642 to $0.1167), GLM-5.2 max ($0.9649 to $1.473), Claude 4.5 Haiku ($0.2077 to $0.2768), and several others. Costs fell for Mistral Large 3 ($0.0538 to $0.0311), Qwen3.7 Plus ($0.2952 to $0.217), and DeepSeek V4 Flash 0420 max ($0.1179 to $0.1075); Mistral’s two models moved in opposite directions.
AI-written summary of these changes · gpt-5.6-terra
New releases 1
peak 10.8one setting, $0.12 per task
Price changes 11
single settingCost per task$0.064 → $0.12+$0.053
single settingCost per task$0.054 → $0.031−$0.023
maxCost per task$0.96 → $1.47+$0.51
single settingCost per task$0.30 → $0.22−$0.078
single settingCost per task$0.21 → $0.28+$0.069
highCost per task$0.17 → $0.21+$0.040
single settingCost per task$0.44 → $0.50+$0.065
maxCost per task$0.12 → $0.11−$0.010
xhighCost per task$0.41 → $0.45+$0.038
single settingCost per task$0.55 → $0.60+$0.048
single settingCost per task$0.098 → $0.10+$0.0021
Removed releases 2
was 25.0 peakhad one setting
was 22.8 peakhad one setting
1 price change
StepFun's Step 5 Preview cost per Intelligence Index task increased from $0.7155 to $0.7175, a rise of $0.0020.
AI-written summary of these changes · gpt-5.6-terra
Price changes 1
single settingCost per task$0.72 → $0.72+$0.0020
1 price change
Z AI's GLM-5.3 low-effort cost per Intelligence Index task fell from $3.663 to $0.8522, a reduction of about 77%. No score, release, or reasoning-effort availability changes are listed.
AI-written summary of these changes · gpt-5.6-terra
