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Claude 3.5 SonnetvsPhi-4 Reasoning

Phi-4 Reasoning leads 2 of 2 shared benchmarks. Claude 3.5 Sonnet has the larger context window (200K tokens).

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

Shared benchmarks
0 – 2
Phi-4 Reasoning leads
Cheaper per token
list price, input + output
Larger context
Claude 3.5 Sonnet
200K tokens
Provider uptime (30d)
100% · —
Anthropic · Microsoft
Claude 3.5 Sonnet
Anthropic · released 2024-10-22
textvision
Context
200K
Max out
8K
Input /1M
$3
Output /1M
$15
Cached /1M
$0.3
Scores
4 · 4 core
Phi-4 Reasoning
Microsoft · released 2025-04-30
text
Context
33K
Max out
33K
Input /1M
Output /1M
Cached /1M
Scores
4 · 4 core
Quality

Benchmark matrix

BenchmarkClaude 3.5 SonnetPhi-4 ReasoningΔEdge
Reported by both · 2
GPQA Diamond55.3% epoch65.8% -10.5 ptPhi-4 Reasoning
AIME 20253.3% matharena62.9% -59.6 ptPhi-4 Reasoning
Only Claude 3.5 Sonnet reports · 2
SWE-bench Verified49% not reported
OTIS Mock AIME 2024-2025 (Epoch AI run)8.5% epochnot reported
Only Phi-4 Reasoning reports · 2
MMLU-Pronot reported74.3%
HumanEval+not reported92.9%
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 Claude 3.5 Sonnet minus Phi-4 Reasoning 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

SpecClaude 3.5 SonnetPhi-4 ReasoningEdge
Context window200K tokens33K tokensClaude 3.5 Sonnet
Max output8K tokens33K tokensPhi-4 Reasoning
Input price / 1M$3
Output price / 1M$15
Cached input / 1M$0.3
Input + output / 1M
Lower is cheaper. List prices; batch, tool and regional fees excluded.
$18
Modalitiestext · visiontextClaude 3.5 Sonnet
Released2024-10-222025-04-30
Cited benchmark scores44
Reliability

Provider status

All providers
More matchups

Claude 3.5 Sonnet vs …

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Which one wins on your data?

Public benchmarks are a starting point. Run Claude 3.5 Sonnet and Phi-4 Reasoning on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.