Claude Instant 1.2 vs Gemini 2.5 Flash Preview: Benchmarks, Pricing, and Context Window Comparison
Claude Instant 1.2 vs Gemini 2.5 Flash Preview compares provider, context window, token pricing, benchmark performance, and release timeline in one side-by-side view. Use this page to quickly identify which model is a better fit for your production constraints, quality targets, and estimated cost per request.
Verdict
Gemini 2.5 Flash Preview has lower listed token pricing, while Claude Instant 1.2 can still be preferable if benchmark results better match your workload.
Author: Mirai Minds Research Team
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Overview
Claude Instant 1.2 was released 20 months before Gemini 2.5 Flash Preview.
 Claude Instant 1.2 | Gemini 2.5 Flash Preview | |
|---|---|---|
Provider The entity that provides this model. | Anthropic | Google |
Input Context Window The number of tokens supported by the input context window. | 100K tokens | 1,048,576 tokens |
Maximum Output Tokens The number of tokens that can be generated by the model in a single request. | Not specified. | 65,536 tokens |
Release Date When the model was first released. | Aug 09, 2023 over 1 yearago 2023-08-09 | Apr 17, 2025 about 11 months 2025-04-17 |
Leaderboard
| Claude Instant 1.2 | Gemini 2.5 Flash Preview | |
|---|---|---|
Rank | Unknown | Unknown |
Arena Elo | Not specified. | Not specified. |
95% CI | Not specified. | Not specified. |
Votes | Not specified. | Not specified. |
License | Not specified. | Not specified. |
Knowledge Cutoff | Unknown | Unknown |
Pricing
| Claude Instant 1.2 | Gemini 2.5 Flash Preview | |
|---|---|---|
Input Cost of input data provided to the model. | $0.80 per million tokens | $0.15 per million tokens |
Output Cost of output tokens generated by the model. | $2.40 per million tokens | $0.60 per million tokens |
Benchmarks
Compare relevant benchmarks between Claude Instant 1.2 and Gemini 2.5 Flash Preview Instruct.
| Claude Instant 1.2 | Gemini 2.5 Flash Preview | |
|---|---|---|
MMLU Evaluating LLM knowledge acquisition in zero-shot and few-shot settings. | 73.4 (5-shot) | 88.4 (5-shot) |
MMMU A wide ranging multi-discipline and multimodal benchmark. | Benchmark not available. | 76.7 |
HellaSwag A challenging sentence completion benchmark. | Benchmark not available. | Benchmark not available. |
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