Pairwise benchmark snapshot · Aug 16, 2026noindex (thin pair)

Claude Haiku 4.5 vs OpenAI: GPT-5.6 Terra (batch) benchmark

Name: Claude Haiku 4.5 vs OpenAI: GPT-5.6 Terra (batch) AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares Claude Haiku 4.5 (Anthropic) and OpenAI: GPT-5.6 Terra (batch) (OpenAI) using the latest snapshots we have as of Aug 16, 2026. Claude Haiku 4.5 wins on output price at $5/1M. OpenAI: GPT-5.6 Terra (batch) has the larger context window (1.1M tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.

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Anthropic

Claude Haiku 4.5

Anthropic cheap/fast Claude SKU. Official Claude Platform list price $1/$5 per 1M tokens (Anthropic Haiku page).

Elo 1,438$5/1M out

OpenAI

OpenAI: GPT-5.6 Terra (batch)

Auto-discovered from OpenRouter (openai/gpt-5.6-terra:batch). Preview until a second source matches.

$6/1M out

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Model A

Model B

Quick vs:vs Claude Opus 4.5 vs Claude Opus 4.6 vs Claude Sonnet 4.5 vs Claude 3.7 Sonnet

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Haiku 4.5 (8)vsOpenAI: GPT-5.6 Terra (batch) (1)

Claude Haiku 4.5: 8W (89%)Overall: Claude Haiku 4.5OpenAI: GPT-5.6 Terra (batch): 1W (11%)

← Claude Haiku 4.51 tiesOpenAI: GPT-5.6 Terra (batch) →

Claude Haiku 4.5 (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,438vs—

Coding Elo

1,446vs—

SWE-bench

58.2%vs—

LiveBench

62.4%vs—

GPQA Diamond

74%vs—

Claude Haiku 4.5: 5WOpenAI: GPT-5.6 Terra (batch): 0W

Claude Haiku 4.5 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

175 tok/svs—

Time to first token

95 msvs—

Claude Haiku 4.5: 2WOpenAI: GPT-5.6 Terra (batch): 0W

Tied (1/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$5/1Mvs$6/1M

Input price

$1/1Mvs$1/1M

Context window

200kvs1.1M

Claude Haiku 4.5: 1WOpenAI: GPT-5.6 Terra (batch): 1W

Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect

Percentile 0–100

Dimensional AdvantageClaude Haiku 4.5 5/6

Preference Elo

No shared data

Throughput Speed

No shared data

Price Efficiency

Claude Haiku 4.5

$1.00/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

1,438

EloHigh is better

—

Code Elo

High is better

1,446

Code EloHigh is better

—

LiveBench

High is better

62.4%

LiveBenchHigh is better

—

SWE-bench

High is better

58.2%

SWE-benchHigh is better

—

GPQA

High is better

74%

GPQAHigh is better

—

TTFT

Low is better

95 ms

TTFTLow is better

—

Speed

High is better

175 tok/s

SpeedHigh is better

—

In $

Low is better

$1/1M

In $Low is better

$1/1M

Out $

Low is better

+20%$5/1M

Out $Low is better

$6/1M

Context

High is better

200k

ContextHigh is better

1.1M+425%

Interactive Simulator

Workload Cost & Savings Calculator

Simulate monthly production API costs based on published $/1M tokens.

Save up to 12% with Claude Haiku 4.5

Monthly Volume50M tokens/mo

Quick Presets:

Token Ratio (In vs Out)70% In / 30% Out

RAG / Search (10% out)Coding / Chat (50% out)

Claude Haiku 4.5$110.00 / mo

In: $35.00Out: $75.00

OpenAI: GPT-5.6 Terra (batch)$125.00 / mo

In: $35.00Out: $90.00

Estimated Cost Delta

Claude Haiku 4.5 is estimated to save $15.00/month ($180/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

1
Claude Haiku 4.5:Pick Claude Haiku 4.5 when you are optimizing output cost.
2
OpenAI: GPT-5.6 Terra (batch):Pick OpenAI: GPT-5.6 Terra (batch) for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatClaude Haiku 4.5

Lower output list price ($5/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGOpenAI: GPT-5.6 Terra (batch)

Larger window (1.1M).

Screenshots / visionClaude Haiku 4.5

Claude Haiku 4.5 is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	insufficient data	Need SWE-bench on both sides.
High-volume chat	Claude Haiku 4.5	Lower output list price ($5/1M).
Voice / low-latency UI	insufficient data	Need TTFT on both sides.
Long-document RAG	OpenAI: GPT-5.6 Terra (batch)	Larger window (1.1M).
Screenshots / vision	Claude Haiku 4.5	Claude Haiku 4.5 is the side marked multimodal in the catalog.

Related Editorial Dispatches & Benchmark Notes

View all news

compareAug 16, 2026

Haiku 4.5 vs Llama 4 Scout: cheap Claude versus cheap open Llama

$1/$5 hosted Claude vs a cheap long-context open sibling. The alternative-to-Sonnet pair that is honest.

launchApr 8, 2026

Llama 4 Scout: long-context open sibling of Maverick

Huge window, cheap hosted lists. The Haiku alternative that is actually open-weight.

launchOct 22, 2025

Claude Haiku 4.5 at $1/$5: the cheap Claude people actually ship

Official Anthropic list $1/$5. This is the SKU behind “cheapest Claude alternative” that is still Claude.

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LIVE

Anthropic

Claude Haiku 4.5

Elo 1,438

LiveBench62.4%

SWE-bench58.2%

Speed175 tok/s

Output cost$5/1M

OpenAI

OpenAI: GPT-5.6 Terra (batch)

Elo n/a

LiveBench—

SWE-bench—

Speed—

Output cost$6/1M

Frequently Asked Questions

Which is better overall, Claude Haiku 4.5 or OpenAI: GPT-5.6 Terra (batch)?: We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.
Which is better at coding, Claude Haiku 4.5 or OpenAI: GPT-5.6 Terra (batch)?: SWE-bench is missing for at least one model, so we do not rank coding from a single number.
Which is cheaper to run in production?: Claude Haiku 4.5 output tokens are $5/1M versus $6/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude Haiku 4.5 or OpenAI: GPT-5.6 Terra (batch)?: We do not have TTFT for both models.
Which has the larger context window?: OpenAI: GPT-5.6 Terra (batch) accepts 1.1M tokens versus 200k.
Can I self-host either model?: Neither model is marked open-weights here. You are comparing hosted APIs.
Are these scores from CompareLLM’s own evals?: No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?: Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Claude Haiku 4.5 and OpenAI: GPT-5.6 Terra (batch) Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Claude Haiku 4.5 matchups →|All OpenAI: GPT-5.6 Terra (batch) matchups →

Claude Haiku 4.5 vs Claude 3.5 Haiku (previous haiku)Claude Sonnet 4.5 vs Claude Haiku 4.5 GPT-4.5 Orion vs Claude Haiku 4.5 GPT-5.6 Terra vs Claude Haiku 4.5 Claude Sonnet 5 vs Claude Haiku 4.5 GPT-5 vs Claude Haiku 4.5

Claude Haiku 4.5 vs OpenAI: GPT-5.6 Terra (batch) benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Haiku 4.5 (8)vsOpenAI: GPT-5.6 Terra (batch) (1)

Claude Haiku 4.5: 8W (89%)Overall: Claude Haiku 4.5OpenAI: GPT-5.6 Terra (batch): 1W (11%)

← Claude Haiku 4.51 tiesOpenAI: GPT-5.6 Terra (batch) →

Claude Haiku 4.5 (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,438vs—

Coding Elo

1,446vs—

SWE-bench

58.2%vs—

LiveBench

62.4%vs—

GPQA Diamond

74%vs—

Claude Haiku 4.5: 5WOpenAI: GPT-5.6 Terra (batch): 0W

Claude Haiku 4.5 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

175 tok/svs—

Time to first token

95 msvs—

Claude Haiku 4.5: 2WOpenAI: GPT-5.6 Terra (batch): 0W

Tied (1/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$5/1Mvs$6/1M

Input price

$1/1Mvs$1/1M

Context window

200kvs1.1M

Claude Haiku 4.5: 1WOpenAI: GPT-5.6 Terra (batch): 1W

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatClaude Haiku 4.5

Lower output list price ($5/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGOpenAI: GPT-5.6 Terra (batch)

Larger window (1.1M).

Screenshots / visionClaude Haiku 4.5

Claude Haiku 4.5 is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	insufficient data	Need SWE-bench on both sides.
High-volume chat	Claude Haiku 4.5	Lower output list price ($5/1M).
Voice / low-latency UI	insufficient data	Need TTFT on both sides.
Long-document RAG	OpenAI: GPT-5.6 Terra (batch)	Larger window (1.1M).
Screenshots / vision	Claude Haiku 4.5	Claude Haiku 4.5 is the side marked multimodal in the catalog.

Frequently Asked Questions

Which is better overall, Claude Haiku 4.5 or OpenAI: GPT-5.6 Terra (batch)?

We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.

Which is better at coding, Claude Haiku 4.5 or OpenAI: GPT-5.6 Terra (batch)?

SWE-bench is missing for at least one model, so we do not rank coding from a single number.

Which is cheaper to run in production?

Claude Haiku 4.5 output tokens are $5/1M versus $6/1M. Input prices and retry rates still move the real bill.

Which is faster, Claude Haiku 4.5 or OpenAI: GPT-5.6 Terra (batch)?

We do not have TTFT for both models.

Which has the larger context window?

OpenAI: GPT-5.6 Terra (batch) accepts 1.1M tokens versus 200k.

Can I self-host either model?

Neither model is marked open-weights here. You are comparing hosted APIs.

Are these scores from CompareLLM’s own evals?

No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.

What does preference Elo mean on this page?

Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Claude Haiku 4.5 and OpenAI: GPT-5.6 Terra (batch) Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

No shared data

No shared data

Claude Haiku 4.5

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Haiku 4.5 vs Llama 4 Scout: cheap Claude versus cheap open Llama

Llama 4 Scout: long-context open sibling of Maverick

Claude Haiku 4.5 at $1/$5: the cheap Claude people actually ship

Cast Your Matchup Vote

Community Discussions (0)

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CompareLLM Matrix

Claude Haiku 4.5

OpenAI: GPT-5.6 Terra (batch)

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

No shared data

No shared data

Claude Haiku 4.5

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Haiku 4.5 vs Llama 4 Scout: cheap Claude versus cheap open Llama

Llama 4 Scout: long-context open sibling of Maverick

Claude Haiku 4.5 at $1/$5: the cheap Claude people actually ship

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

Claude Haiku 4.5

OpenAI: GPT-5.6 Terra (batch)

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons