CODEX-CLI
codex-gpt-5.6-sol
OpenAI GPT-5.6 Sol (Codex $200 plan) — flagship agentic coding
★VALS INDEX
88.7%
+/- 7.6
Accuracy
⏱VALS INDEX
11.9s
Latency (median)
$VALS INDEX
$7.2342
Cost / Test (1P-est)
SCORE STATUSscored
TEST SETS13
RECORDED TRIALS270
CUSTOM PASS80%
Industry benchmarks
Accuracyattempts · responded
GPQA_DIAMOND
GPQA Diamond
93.3%
30 attempts · 29 responded
HUMANEVAL_PLUS
HumanEval+
92.0%
50 attempts · 50 responded
IFEVAL
IFEval
77.3%
50 attempts · 50 responded
MMLU_PRO
MMLU-Pro
92.0%
50 attempts · 50 responded
Custom 9-task suite
Mean /5n=trials
CUSTOM
agentic_prompt
★
5.00
10 trials
CUSTOM
code_gen_long
★
5.00
10 trials
CUSTOM
json_strict
★
5.00
10 trials
CUSTOM
reasoning_multistep
★
5.00
10 trials
CUSTOM
agentic_tool_use
★
4.80
10 trials
CUSTOM
code_debug
★
4.70
10 trials
CUSTOM
summarize
★
4.10
10 trials
CUSTOM
refactor_existing_code
-
2.30
10 trials
CUSTOM
creative_write
★
1.50
10 trials
Cross-judge validation
m3 vs Fable-5 Δ
No judge bias detected on this model — m3 and Fable-5 agree across all tasks.
Per-task distribution
Score
All trials on this page were run through the harness. Industry suites use deterministic family-specific reference graders (no LLM judge). The custom suite is graded by consensus of minimax-m3 + claude-fable-5. See /industry/ for the full benchmark suite.