Claude Haiku 4.5 Thinking

Claude Haiku 4.5 Thinking is a reasoning model from Anthropic in the Claude Haiku 4.5 family. 12 benchmarks count toward its score, in 5 categories.

availableShows if the model has enough results for an index.
IndexOverall score out of 100.42.8 ±7.2
CoverageShare of the index weight with results.75%
SpeedOutput tokens per second.
Input / 1MUS dollars per 1M input tokens.N/A
Output / 1MUS dollars per 1M output tokens.N/A
ContextMaximum tokens in one request.200K
EloLMArena rating and rank.N/A

The index is a score out of 100. The ± range shows how much it can change.

CapabilitiesScore per category, out of 100.

Out of 100
AgenticMulti-step tasks with tools.
51.3
CodingCode writing and repair.
42.6
ReasoningLogic problems and puzzles.
N/A
MultimodalTasks with images and text.
5.0
KnowledgeFacts and expert knowledge.
44.7
MultilingualTasks in many languages.
N/A
InstructionTasks with strict rules in the prompt.
N/A
MathMath problems.
52.3

Results

12 counted
BenchmarkThe test name.CategoryThe capability that the test measures.ResultThe score from the publisher.IndexThis result as a score out of 100.RunThe settings of the run.DateDate of the result.Published byThe source of the result.
MGSMMultilingual92.1%9 Jan 2026Vals AI
AIMEMath82.7%52.316 Apr 2026Vals AI
MMLU ProKnowledge78.7%44.51 Sept 2026Vals AI
GPQA DiamondKnowledge72.2%44.91 Sept 2026Vals AI
SWE-benchCoding66.6%51.01 Sept 2026Vals AI
Terminal-Bench 1.0Agentic50.0%53.912 Jan 2026Vals AI
MMMU ProMultimodal46.1%5.01 Sept 2026Vals AI
Terminal-Bench 2.1Agentic43.8%49.921 Sept 2026Vals AI
LiveCodeBenchCoding41.2%21.81 Sept 2026Vals AI
Terminal-Bench 2.0Agentic38.2%49.94 Jun 2026Vals AI
Vibe Code Bench v1.1Coding11.4%46.9OpenHands21 Sept 2026Vals AI
Code MigrationCoding7.6%49.721 Sept 2026Vals AI
IOI v1Coding6.2%43.49 Aug 2026Vals AI
ProgramBenchCoding0.0%21 Sept 2026Vals AI

12 benchmarks count, from 12 of 14 results. A grey row does not count. Too few models took that benchmark.

Sources

BenchLM benchmark aggregationUsed with attribution; per-benchmark results credited to their original authorsVals AI, collected directlyNo licence stated. Read from the public leaderboard and credited to Vals AI

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