Aion 3.5 measured on 2 of 8 Writing & Language benchmarks2
BenchmarkByScoreRank
No benchmark matches
Rankingconfiguration unstated?
Full ranking →···
6GPT-6 Sol82.89Aion 3.582.110Opus 4.781.8Alternatives?
ModelScoreCostPer taskWhat changes
CheaperGrok 4.7unstatedsame-20%$2 / $6Reasoning cannot be disabled+4
BetterClaude Opus 5unstated+5%+167%$5 / $25
OpenGLM 5.3unstatedsame-43%$1.40 / $4.40Reasoning cannot be disabled+3
CheaperMuse Spark 1.3unstatedsame-47%$1.25 / $4.25Only auto tool_choice is supported+5CheaperMuse Spark 1.2unstatedsame-47%$1.25 / $4.25Only auto tool_choice is supported+1ModelScoreCostPer taskWhat changes
Grok 4.7unstatedsame-20%$2 / $6Reasoning cannot be disabled+4Muse Spark 1.3unstatedsame-47%$1.25 / $4.25Only auto tool_choice is supported+5GLM 5.3unstatedOpensame-43%$1.40 / $4.40Reasoning cannot be disabled+3Muse Spark 1.2unstatedsame-47%$1.25 / $4.25Only auto tool_choice is supported+1
Kimi K2.6unstatedOpen-4%-54%$0.95 / $4Context: 262K → 256KModelScoreCostPer taskWhat changes
Claude Opus 5unstated+5%+167%$5 / $25Claude Fable 5.1unstated+4%+433%$10 / $50Replace forced tool_choice+5Claude Opus 5.5unstated+3%+113%$4 / $20No forced tool use+5ModelScoreCostPer taskWhat changes
GLM 5.3unstatedOpensame-43%$1.40 / $4.40Reasoning cannot be disabled+3Kimi K3unstatedOpen-3%+60%$3 / $15Sampling parameters are fixed+3Kimi K2.6unstatedOpen-4%-54%$0.95 / $4Context: 262K → 256KGLM 5.2unstatedOpen-5%-43%$1.40 / $4.40
DeepSeek V4 Pro 0813unstatedOpen-8%-47%$1.32 / $3.96Pass back reasoning_content · Chat Completions+4Benchmarks
in Writing & LanguageEQ-Bench Creative Writing v31,929.3#11
FAQ
How much does Aion 3.5 cost?›
$3 per 1M input tokens and $6 per 1M output tokens; cached input $0.75 per 1M.
Is Aion 3.5 free to use?›
There is no free API; the cheapest paid price is $3 per 1M input tokens.
How good is Aion 3.5, and what is it best at?›
#9 of 95 in Writing & Language.
Is Aion 3.5 better than GPT-6 Sol?›
On EQ-Bench Longform Creative Writing 1.11, Aion 3.5 scores 82.1 vs 82.8 — about the same.
How can I use Aion 3.5?›
Through the API of AionLabs.
What is the context window of Aion 3.5?›
262K tokens, with up to 33K output tokens.
Can Aion 3.5 read images?›
No, it accepts text only.
What is Aion 3.5?›
Aion 3.5 is a language model from aion-labs.
What are the best alternatives to Aion 3.5?›
Grok 4.7 (cheaper), Claude Opus 5 (better), GLM 5.3 (open weights).