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Grok 4.6vsSolar Open 2 250B-A15B

Grok 4.6 leads 2 of 2 shared benchmarks. Solar Open 2 250B-A15B has the larger context window (1M tokens).

Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.

Shared benchmarks
2 – 0
Grok 4.6 leads
Cheaper per token
list price, input + output
Larger context
Solar Open 2 250B-A15B
1M tokens
Provider uptime (30d)
— · —
xAI · Upstage
Grok 4.6
xAI · released 2026-08-12
textvision
Context
500K
Max out
Input /1M
$2
Output /1M
$6
Cached /1M
$0.5
Scores
15 · 5 core
Solar Open 2 250B-A15B
Upstage · released 2026-07-24
text
Context
1M
Max out
Input /1M
Output /1M
Cached /1M
Scores
16 · 5 core
Quality

Benchmark matrix

BenchmarkGrok 4.6Solar Open 2 250B-A15BΔEdge
Reported by both · 2
GPQA Diamond94% epoch86.3% +7.7 ptGrok 4.6
APEX-Agents57.5% 16.6% +40.9 ptGrok 4.6
Only Grok 4.6 reports · 13
AA-Briefcase1577 not reported
APEX-SWE56.4% not reported
Artificial Analysis Intelligence Index61 not reported
CursorBench 3.269.9% not reported
DeepSWE v1.165.9% not reported
FrontierCode v1.1 (Extended)61.3% not reported
FrontierMath Tier 4 v2 (Epoch AI run)31.7% epochnot reported
FrontierMath Tiers 1-3 v2 (Epoch AI run)66% epochnot reported
GDPVal-AA v21753 not reported
Harvey LAB (Vals)15.8% not reported
OTIS Mock AIME 2024-2025 (Epoch AI run)99.2% epochnot reported
SimpleQA Verified49.3% epochnot reported
Terminal-Bench 3.026% not reported
Only Solar Open 2 250B-A15B reports · 14
SWE-bench Verifiednot reported70.4%
MMLU-Pronot reported86.2%
AIME 2026not reported95.7%
Humanity's Last Exam (no tools)not reported28.8%
AA-LCRnot reported62.3%
ArtifactsBenchnot reported55.9%
GDPval-AA v2not reported1128
HMMT 2026-02not reported93.9%
IFBenchnot reported80%
LiveCodeBench v6not reported92.4%
MCP Atlasnot reported58.2%
Multi-Challengenot reported61%
Tau3-Bench (banking)not reported19.6%
Terminal Bench Hardnot reported28.3%
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Grok 4.6 minus Solar Open 2 250B-A15B in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing

Side by side

SpecGrok 4.6Solar Open 2 250B-A15BEdge
Context window500K tokens1M tokensSolar Open 2 250B-A15B
Max output
Input price / 1M$2
Output price / 1M$6
Cached input / 1M$0.5
Input + output / 1M
Lower is cheaper. List prices; batch, tool and regional fees excluded.
$8
Modalitiestext · visiontextGrok 4.6
Released2026-08-122026-07-24
Cited benchmark scores1516
Reliability

Provider status

All providers
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Public benchmarks are a starting point. Run Grok 4.6 and Solar Open 2 250B-A15B on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.