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GPT-6.1 Sol

openai/gpt-6.1-sol
  • OpenAI
  • Family · GPT-6 Sol
  • Released 29 Sep 2026
  • File · Image · Text → Text
  • Reasoning · adjustable
  • Tools · JSON · Vision
Not on OSMEXO yet
Spec & list price
Context1M
Max output128K
Input / 1M$2.00
Output / 1M$10.005× input
Scores · standing
Intelligence54.5#7/489
LiveBench84.1#4/32
Usage
Tokens / day425.2B▲ 29% 7d
Usage rank#12
Requests / day20.4M
Tool calls / req0.47
Per request · 30 days
Avg input42.4K2.8× median
Avg output636about median
Cache hit89%1.3× median
Reasoning share39%0.7× median
Tool-call failures0.3%0.1× median

Benchmarks

bar = share of the top score · Benchmark data: Artificial Analysis
Long-context reasoning#8 of 393
84.0%
Intelligence index#7 of 489
54.5
Humanity's Last Exam#10 of 465
52.9%
Terminal-Bench 4.0#8 of 152
56.1%
SciCode#30 of 160
55.8%
Speed · median across 9 providers, latest day
Output speed#225/33450 tok/s1.3× slower than median
Fastest provider140 tok/sbest of 9 providers
First token#2953.07 s3.0× longer than median
First answer token#96146 sthinking included

Best value in its score band

Value
Intelligence Index
45505560$2$5$10GPT-6.1 Sol
Blended price per 1M tokens (log)
Family progress
Intelligence Index
464850525456GPT-6.1 Sol
  • Family releases54.5
LiveBench suites
Browser93.3
Coding96.0
Data Analysis82.7
Design82.1
Long Agentic68.7
Reasoning92.6
Research83.5

▲ Strongest: Coding, Browser. ▼ Weakest: Long Agentic (69).

Technical details

Reasoning
on · medium
Tokenizer
GPT
Moderation
moderated
Reasoning effort
  • max
  • xhigh
  • high
  • medium · default
  • low
Request parameters 11
  • tools
  • tool_choice
  • response_format
  • structured_outputs
  • reasoning
  • reasoning_effort
  • include_reasoning
  • max_tokens
  • max_completion_tokens
  • seed
+1 more
  • verbosity

Interesting facts

  1. Less output room than similar models (128.0K against a 535.9K median).
  2. Released 34 days ago, the newest of 2 GPT-6 Sol models.

When to use

Best for

  • Coding agents on large codebases
  • Terminal and tool-heavy automation
  • Very long document reasoning
  • Expert-level science and research questions
  • Image and file understanding

Think twice for

  • Long autonomous agent runs
  • High-volume simple chat (cheaper options exist)
  • Self-hosting (closed weights)

Research papers

Same family

GPT-6 Sol

Alternatives

other vendors · similar capability

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